Merge branch 'usrp_e' of git@ettus.sourcerepo.com:ettus/uhdpriv into usrp_e

68 files changed, 2783 insertions, 664 deletions

diff --git a/host/CMakeLists.txt b/host/CMakeLists.txt
index 6334b44ff..bf8d71b21 100644
--- a/host/CMakeLists.txt
+++ b/host/CMakeLists.txt
@@ -76,7 +76,7 @@ ENDIF(WIN32)
 # Setup Boost
 ########################################################################
 SET(Boost_ADDITIONAL_VERSIONS "1.42.0" "1.42")
-FIND_PACKAGE(Boost 1.36 REQUIRED COMPONENTS
+FIND_PACKAGE(Boost 1.37 REQUIRED COMPONENTS
     date_time
     filesystem
     program_options
@@ -124,24 +124,8 @@ INSTALL(
 )
 
 ########################################################################
-# Setup Docs
+# Install Package Docs
 ########################################################################
-INCLUDE(FindDoxygen)
-
-IF(DOXYGEN_FOUND)
-    SET(CMAKE_CURRENT_BINARY_DIR_DOXYGEN ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
-    CONFIGURE_FILE(
-        ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in
-        ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
-    @ONLY)
-    ADD_CUSTOM_COMMAND(OUTPUT ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN}
-        COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
-        COMMENT "Generating documentation with doxygen"
-    )
-    ADD_CUSTOM_TARGET(docs ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN})
-    INSTALL(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN} DESTINATION ${PKG_DOC_DIR})
-ENDIF(DOXYGEN_FOUND)
-
 INSTALL(FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/README
     ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE
@@ -152,6 +136,7 @@ INSTALL(FILES
 ########################################################################
 # Add the subdirectories
 ########################################################################
+ADD_SUBDIRECTORY(docs)
 ADD_SUBDIRECTORY(examples)
 ADD_SUBDIRECTORY(include)
 ADD_SUBDIRECTORY(lib)
diff --git a/host/README b/host/README
index cbf18dbf7..e67bb25f8 100644
--- a/host/README
+++ b/host/README
@@ -15,86 +15,15 @@ Basic RX
 Basic TX
 LF RX
 LF TX
+RFX Series
+XCVR 2450
 
 ########################################################################
-# Dependencies
+# Documentation
 ########################################################################
-Unix Notes:
-    These dependencies can be acquired through the package manager.
-Windows Notes:
-    These dependencies can be acquired through installable exe files.
-    Usually, the windows installer can be found on the project's website.
-    Some projects do not host windows installers, and if this is the case,
-    follow the auxiliary download url for the windows installer (below).
-
-Git:
-    Required to check out the repository (not needed for source downloads).
-    On windows, install cygwin with git support to checkout the repository.
-
-C++:
-    On unix, this is GCC 4.0 and above. On windows, this is MSVC 2008.
-    Other compilers have not been tested yet or confirmed working.
-
-CMake:
-    Version: at least 2.8
-    Required for: build time
-    Download URL: http://www.cmake.org/cmake/resources/software.html
-
-Boost:
-    Version: at least 3.6 unix, at least 4.0 windows
-    Required for: build time + run time
-    Download URL: http://www.boost.org/users/download/
-    Download URL (windows installer): http://www.boostpro.com/download
-
-Python:
-    Version: at least 2.6
-    Required for: build time
-    Download URL: http://www.python.org/download/
-
-Cheetah:
-    Version: at least 2.0
-    Required for: build time
-    Download URL: http://www.cheetahtemplate.org/download.html
-    Download URL (windows installer): http://feisley.com/python/cheetah/
-
-Doxygen:
-    Required for: build time (optional)
-    Download URL: http://www.stack.nl/~dimitri/doxygen/download.html#latestsrc
-
-########################################################################
-# Build Instructions (unix)
-########################################################################
-cd <uhd-repo-path>/host
-mkdir build
-cd build
-cmake ../
-make
-make test
-sudo make install
-
-For a custom prefix, use: cmake -DCMAKE_INSTALL_PREFIX=<myprefix> ../
-
-########################################################################
-# Build Instructions (windows)
-########################################################################
-
-##### Generate the project with cmake #####
-Open the cmake gui program.
-Set the path to the source code: <uhd-repo-path>/host
-Set the path to the build directory: <uhd-repo-path>/host/build
-Make sure that the paths do not contain spaces.
-Click configure and select the MSVC compiler.
-Set the build variables and click configure again.
-Click generate and a project file will be created in the build directory.
-
-##### Build the project in MSVC #####
-Open the generated project file in MSVC.
-Select the build all target, right click, and choose build.
-Select the install target, right click, and choose build.
-    Note: you may not have permission to build the install target.
-    You need to be an administrator or to run MSVC as administrator.
-
-##### Setup the PATH environment variable #####
-Add the boost library path and uhd library path to your %PATH%.
-Usually c:\program files\boost\<version>\lib and c:\program files\uhd\lib
+Online documentation available at:
+http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/wiki/
 
+The build system can generate the html for the manual and Doxygen.
+Docutils and Doxygen are required to build the html docs.
+See the docs directory for the manual source (reStructuredText).
diff --git a/host/docs/CMakeLists.txt b/host/docs/CMakeLists.txt
new file mode 100644
index 000000000..61eede8b7
--- /dev/null
+++ b/host/docs/CMakeLists.txt
@@ -0,0 +1,101 @@
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+########################################################################
+# List of manual sources
+########################################################################
+SET(manual_sources
+    index.rst
+    build.rst
+    coding.rst
+    dboards.rst
+    usrp2.rst
+)
+
+########################################################################
+# Setup Manual
+########################################################################
+MESSAGE(STATUS "Checking for rst2html (docutils)")
+FIND_PROGRAM(RST2HTML rst2html)
+IF(${RST2HTML} STREQUAL "RST2HTML-NOTFOUND")
+    MESSAGE(STATUS "Checking for rst2html (docutils) - not found")
+    MESSAGE(STATUS "  Disabled generation of HTML manual.")
+ELSE(${RST2HTML} STREQUAL "RST2HTML-NOTFOUND")
+    MESSAGE(STATUS "Checking for rst2html (docutils) - found")
+    MESSAGE(STATUS "  Enabled generation of HTML manual.")
+
+    #setup rst2html options
+    SET(stylesheet ${CMAKE_CURRENT_SOURCE_DIR}/style.css)
+    SET(rst2html_options
+        --stylesheet=${stylesheet}
+        --no-toc-backlinks --date --time
+    )
+
+    #create generation rule for each source
+    FOREACH(rstfile ${manual_sources})
+        #set input and output file names
+        SET(rstfile ${CMAKE_CURRENT_SOURCE_DIR}/${rstfile})
+        GET_FILENAME_COMPONENT(rstfile_we ${rstfile} NAME_WE)
+        SET(htmlfile ${CMAKE_CURRENT_BINARY_DIR}/${rstfile_we}.html)
+
+        #make the html file depend on the rst file
+        ADD_CUSTOM_COMMAND(
+            OUTPUT ${htmlfile} DEPENDS ${rstfile} ${stylesheet}
+            COMMAND ${RST2HTML} ${rstfile} ${htmlfile} ${rst2html_options}
+            COMMENT "Generating ${htmlfile}"
+        )
+
+        #make the manual target depend on the html file
+        LIST(APPEND manual_html_files ${htmlfile})
+        INSTALL(FILES ${htmlfile} DESTINATION ${PKG_DOC_DIR}/manual/html)
+    ENDFOREACH(rstfile ${manual_sources})
+
+    #make the html manual a build-time dependency
+    ADD_CUSTOM_TARGET(manual_html ALL DEPENDS ${manual_html_files})
+ENDIF(${RST2HTML} STREQUAL "RST2HTML-NOTFOUND")
+
+INSTALL(FILES ${manual_sources} DESTINATION ${PKG_DOC_DIR}/manual/rst)
+
+########################################################################
+# Setup Doxygen
+########################################################################
+INCLUDE(FindDoxygen)
+
+IF(DOXYGEN_FOUND)
+    MESSAGE(STATUS "  Enabled generation of Doxygen documentation.")
+
+    #generate the doxygen configuration file
+    SET(CMAKE_CURRENT_BINARY_DIR_DOXYGEN ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
+    CONFIGURE_FILE(
+        ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in
+        ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+    @ONLY)
+
+    #make doxygen directory depend on the header files
+    FILE(GLOB_RECURSE header_files ${CMAKE_SOURCE_DIR}/include/*.hpp)
+    ADD_CUSTOM_COMMAND(
+        OUTPUT ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN} DEPENDS ${header_files}
+        COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+        COMMENT "Generating documentation with doxygen"
+    )
+
+    #make the doxygen generation a built-time dependency
+    ADD_CUSTOM_TARGET(doxygen_docs ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN})
+    INSTALL(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR_DOXYGEN} DESTINATION ${PKG_DOC_DIR})
+ELSE(DOXYGEN_FOUND)
+    MESSAGE(STATUS "  Disabled generation of Doxygen documentation.")
+ENDIF(DOXYGEN_FOUND)
diff --git a/host/Doxyfile.in b/host/docs/Doxyfile.in
index 7395516b5..7395516b5 100644
--- a/host/Doxyfile.in
+++ b/host/docs/Doxyfile.in
diff --git a/host/docs/build.rst b/host/docs/build.rst
new file mode 100644
index 000000000..81e61475e
--- /dev/null
+++ b/host/docs/build.rst
@@ -0,0 +1,130 @@
+========================================================================
+UHD - Build Guide
+========================================================================
+
+.. contents:: Table of Contents
+
+------------------------------------------------------------------------
+Build Dependencies
+------------------------------------------------------------------------
+
+**Unix Notes:**
+The dependencies can be acquired through the package manager.
+
+**Windows Notes:**
+The dependencies can be acquired through installable exe files.
+Usually, the windows installer can be found on the project's website.
+Some projects do not host windows installers, and if this is the case,
+follow the auxiliary download url for the windows installer (below).
+
+^^^^^^^^^^^^^^^^
+Git
+^^^^^^^^^^^^^^^^
+Required to check out the repository.
+On windows, install cygwin with git support to checkout the repository,
+or install msysgit from http://code.google.com/p/msysgit/downloads/list
+
+^^^^^^^^^^^^^^^^
+C++
+^^^^^^^^^^^^^^^^
+On unix, this is GCC 4.0 and above. On windows, this is MSVC 2008.
+Other compilers have not been tested yet or confirmed working.
+
+^^^^^^^^^^^^^^^^
+CMake
+^^^^^^^^^^^^^^^^
+* **Version:** at least 2.8
+* **Required for:** build time
+* **Download URL:** http://www.cmake.org/cmake/resources/software.html
+
+^^^^^^^^^^^^^^^^
+Boost
+^^^^^^^^^^^^^^^^
+* **Version:** at least 3.7 unix, at least 4.0 windows
+* **Required for:** build time + run time
+* **Download URL:** http://www.boost.org/users/download/
+* **Download URL (windows installer):** http://www.boostpro.com/download
+
+^^^^^^^^^^^^^^^^
+Python
+^^^^^^^^^^^^^^^^
+* **Version:** at least 2.6
+* **Required for:** build time
+* **Download URL:** http://www.python.org/download/
+
+^^^^^^^^^^^^^^^^
+Cheetah
+^^^^^^^^^^^^^^^^
+* **Version:** at least 2.0
+* **Required for:** build time
+* **Download URL:** http://www.cheetahtemplate.org/download.html
+* **Download URL (windows installer):** http://feisley.com/python/cheetah/
+
+^^^^^^^^^^^^^^^^
+Doxygen
+^^^^^^^^^^^^^^^^
+* **Required for:** build time (optional)
+* **Download URL:** http://www.stack.nl/~dimitri/doxygen/download.html#latestsrc
+
+------------------------------------------------------------------------
+Build Instructions (Unix)
+------------------------------------------------------------------------
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Generate Makefiles with cmake
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+::
+
+    cd <uhd-repo-path>/host
+    mkdir build
+    cd build
+    cmake ../
+
+For a custom prefix, use: cmake -DCMAKE_INSTALL_PREFIX=<myprefix> ../
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Build and install
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+::
+
+    make
+    make test
+    sudo make install
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Setup the library path
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Make sure that libuhd.so is in your LD_LIBRARY_PATH
+or add it to /etc/ld.so.conf and make sure to run sudo ldconfig
+
+
+------------------------------------------------------------------------
+Build Instructions (Windows)
+------------------------------------------------------------------------
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Generate the project with cmake
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+* Open the cmake gui program.
+* Set the path to the source code: <uhd-repo-path>/host
+* Set the path to the build directory: <uhd-repo-path>/host/build
+* Make sure that the paths do not contain spaces.
+* Click configure and select the MSVC compiler.
+* Set the build variables and click configure again.
+* Click generate and a project file will be created in the build directory.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Build the project in MSVC
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+* Open the generated project file in MSVC.
+* Select the build all target, right click, and choose build.
+* Select the install target, right click, and choose build.
+
+**Note:** you may not have permission to build the install target.
+You need to be an administrator or to run MSVC as administrator.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Setup the PATH environment variable
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+* Add the boost library path to %PATH% (usually c:\\program files\\boost\\<version>\\lib)
+* Add the uhd library path to %PATH% (usually c:\\program files\\uhd\\lib)
diff --git a/host/docs/coding.rst b/host/docs/coding.rst
new file mode 100644
index 000000000..689667f30
--- /dev/null
+++ b/host/docs/coding.rst
@@ -0,0 +1,63 @@
+========================================================================
+UHD - Coding to the API
+========================================================================
+
+.. contents:: Table of Contents
+
+------------------------------------------------------------------------
+Low-Level: The device API
+------------------------------------------------------------------------
+A device is an abstraction for hardware that is connected to the host system.
+For a USRP, this means that the motherboard and everything on it would be considered to be a "device".
+The device API provides ways to:
+
+* Discover devices that are physical connected to the host system.
+* Create a device object for a particular physical device identified by address.
+* Register a device driver into the discovery and factory sub-system.
+* Streaming samples with metadata into and out of the device.
+* Set and get properties on the device object.
+
+See the documentation in device.hpp for reference.
+
+------------------------------------------------------------------------
+High-Level: The simple usrp
+------------------------------------------------------------------------
+The goal of the simple usrp is to wrap high level functions around the device properties.
+The simple usrp provides a fat interface to access the most common properties.
+The simple usrp provides ways to:
+
+* Set and get daughterboard gains.
+* Set and get daughterboard antennas.
+* Set and get the streaming rates.
+* Tune the DSPs and daughterboards.
+* Issue stream commands.
+* Set the clock configuration.
+* Set the usrp time registers.
+* Get the underlying device (as discussed above).
+
+It is recommended that users code to the simple_usrp api when possible.
+See the documentation in usrp/simple_usrp.hpp for reference.
+
+------------------------------------------------------------------------
+Integrating custom hardware
+------------------------------------------------------------------------
+Creators of custom hardware can create drivers that use the UHD API.
+These drivers can be built as dynamically lodable modules that the UHD will load at runtime.
+For a module to be loaded at runtime, it must be found in the UHD_MODULE_PATH environment variable.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Custom motherboard
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Create a new device driver when the driver in lib/usrp/
+cannot support your custom FPGA or hardware modifications.
+Make a copy of the relevant driver code in lib/usrp/, make mods, and rename the class.
+The new device code should register itself into the discovery and factory system. 
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Custom daughterboard
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Use code from an existing daughterboard in lib/usrp/dboard/* as an example.
+Your daughterboard code should subclass an rx dboard, rx dboard, or xcvr dboard;
+and it should respond to calls to get and set properties.
+The new daughterboard code should register itself into the dboard manager
+with a unique rx and/or tx 16 bit identification number.
diff --git a/host/docs/dboards.rst b/host/docs/dboards.rst
new file mode 100644
index 000000000..d08b752a6
--- /dev/null
+++ b/host/docs/dboards.rst
@@ -0,0 +1,64 @@
+========================================================================
+UHD - Daughterboard Application Notes
+========================================================================
+
+.. contents:: Table of Contents
+
+------------------------------------------------------------------------
+Daughterboard Properties
+------------------------------------------------------------------------
+
+The following contains interesting notes about each daughterboard.
+Eventually, this page will be expanded to list out the full
+properties of each board as well.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Basic RX and and LFRX
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+The Basic RX and LFRX boards have 3 subdevices:
+
+* **Subdevice A:** real signal on antenna RXA
+* **Subdevice B:** real signal on antenna RXB
+* **Subdevice AB:** quadrature subdevice using both antennas
+
+The boards have no tunable elements or programmable gains.
+Though the magic of aliasing, you can down-convert signals
+greater than the nyquist rate of the ADC.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Basic TX and and LFTX
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+The Basic TX and LFTX boards have 1 quadrature subdevice using both antennas.
+
+The boards have no tunable elements or programmable gains.
+Though the magic of aliasing, you can up-convert signals
+greater than the nyquist rate of the DAC.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+RFX Series
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Transmit Antennas: **TX/RX**
+
+Receive Antennas: **TX/RX** or **RX2**
+
+The user may set the receive antenna to be TX/RX or RX2.
+However, when using an RFX board in full-duplex mode,
+the receive antenna will always be set to RX2, regardless of the settings.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+XCVR 2450
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+The XCVR2450 has a non-contiguous tuning range consiting of a high band and a low band.
+The high band consists of frequencies between...TODO
+
+Transmit Antennas: **J1** or **J2**
+
+Receive Antennas: **J1** or **J2**
+
+When using the XCVR2450 in full-duplex mode,
+the user must set the receive antenna and the transmit antenna to be different;
+not doing so will yeild undefined results.
+
+The XCVR2450 uses a common LO for both receive and transmit.
+Even though the API allows the RX and TX LOs to be individually set,
+a change of one LO setting will be reflected in the other LO setting.
diff --git a/host/docs/index.rst b/host/docs/index.rst
new file mode 100644
index 000000000..3dc7a2d98
--- /dev/null
+++ b/host/docs/index.rst
@@ -0,0 +1,31 @@
+========================================================================
+UHD - Universal Hardware Driver
+========================================================================
+
+The UHD is the universal hardware driver for Ettus Research products.
+The goal of the UHD is to provide a host driver and api for current and future Ettus Research products.
+Users will be able to use the UHD driver standalone/without gnuradio.
+Also, a dual license option will be available for those who build against the UHD
+but cannot release their software products under the GPL.
+
+------------------------------------------------------------------------
+Contents
+------------------------------------------------------------------------
+
+^^^^^^^^^^^^^^^^^^^^^
+Building the UHD
+^^^^^^^^^^^^^^^^^^^^^
+* `Build Guide <./build.html>`_
+
+^^^^^^^^^^^^^^^^^^^^^
+Supported Devices
+^^^^^^^^^^^^^^^^^^^^^
+* `USRP2 App Notes <./usrp2.html>`_
+* `Daughterboard App Notes <./dboards.html>`_
+
+^^^^^^^^^^^^^^^^^^^^^
+API Documentation
+^^^^^^^^^^^^^^^^^^^^^
+* `Doxygen <./../../doxygen/html/index.html>`_
+* `Using the API <./coding.html>`_
+
diff --git a/host/docs/style.css b/host/docs/style.css
new file mode 100644
index 000000000..bf97bf007
--- /dev/null
+++ b/host/docs/style.css
@@ -0,0 +1,102 @@
+body{
+font-family:Arial, Helvetica, sans-serif;
+font-size:11pt;
+color:black;
+background-color:white;
+width:90%;
+margin:0 auto 0 auto;
+}
+
+div.document div.contents{
+border:1px solid #333333;
+padding:10px 30px 10px 10px;
+margin-left:50px;
+color:inherit;
+background-color:#FCFCFC;
+display:inline-block;
+}
+
+div.document p.topic-title{
+font-weight:bold;
+}
+
+div.document a:link, div.document a:visited{
+color:#236B8E;
+background-color:inherit;
+text-decoration:none;
+}
+
+div.document a:hover{
+color:#4985D6;
+background-color:inherit;
+text-decoration:none;
+}
+
+div.document h1.title{
+font-size:150%;
+border-left:1px solid #333333;
+border-bottom:1px solid #333333;
+text-align:left;
+padding:10px 0px 10px 10px;
+margin:10px 5px 20px 5px;
+color:#333333;
+background-color:inherit;
+}
+
+div.document h2.subtitle, div.section h1{
+margin-top:50px;
+border-bottom:1px solid #333333;
+font-size:140%;
+text-align:center;
+padding:20px 0px 10px 0px;
+color:#333333;
+background-color:inherit;
+}
+
+div.section h2{
+font-size:110%;
+text-align:left;
+padding:15px 0px 5px 0px;
+text-decoration:underline;
+color:#333333;
+background-color:inherit;
+}
+
+div.document pre.literal-block{
+border:1px inset #333333;
+padding:5px;
+margin:10px 5px 10px 5px;
+color:inherit;
+background-color:#FCFCFC;
+font-size:90%;
+}
+
+div.document table{
+padding:5px;
+font-size:95%;
+}
+
+div.document th{
+padding:3px 7px 3px 7px;
+border:1px solid #333333;
+text-align:center;
+color:inherit;
+background-color:#ECECEC;
+}
+
+div.document tr{
+}
+
+div.document td{
+padding:3px 7px 3px 7px;
+border:1px solid #333333;
+text-align:center;
+color:inherit;
+background-color:#FCFCFC;
+}
+
+div.footer{
+margin:50px auto 30px auto;
+text-align:center;
+font-size:85%;
+}
diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst
new file mode 100644
index 000000000..092332442
--- /dev/null
+++ b/host/docs/usrp2.rst
@@ -0,0 +1,128 @@
+========================================================================
+UHD - USRP2 Application Notes
+========================================================================
+
+.. contents:: Table of Contents
+
+------------------------------------------------------------------------
+Building firmware and FPGA images
+------------------------------------------------------------------------
+
+^^^^^^^^^^^^^^^^^^
+FPGA Image
+^^^^^^^^^^^^^^^^^^
+Xilinx ISE 10.1 is required to build the FPGA image for the USRP2
+(newer version of ISE are known to build buggy images).
+The build requires that you have a unix-like environment with make.
+Make sure that xtclsh from the Xilinx ISE bin directory is in your $PATH.
+
+Run the following commands:
+::
+
+    cd <uhd-repo-path>/fpga/usrp2/top/u2_rev3
+    make bin
+
+*The image file will be ./build/u2_rev3.bin*
+
+^^^^^^^^^^^^^^^^^^
+Firmware Image
+^^^^^^^^^^^^^^^^^^
+The Microblaze GCC compiler from the Xilinx EDK is required to build the firmware.
+The build requires that you have a unix-like environment with autotools and make.
+Make sure that mb-gcc from the Xilinx EDK/microblaze directory is in your $PATH.
+
+Run the following commands:
+::
+
+    cd <uhd-repo-path>/firmware/microblaze
+    ./boostrap
+    ./configure --host=mb
+    make
+
+*The image file will be ./apps/txrx_uhd.bin*
+
+------------------------------------------------------------------------
+Load the images onto the SD card
+------------------------------------------------------------------------
+**Warning!**
+Use the u2_flash_tool with caution. If you specify the wrong device node,
+you could overwrite your hard drive. Make sure that --dev= specifies the SD card.
+
+Load the FPGA image:
+
+::
+
+    cd <uhd-repo-path>/firmware/microblaze
+    sudo ./u2_flash_tool --dev=/dev/sd<XXX> -t fpga -w <path_to_fpga_image>
+
+Load the firmware image:
+
+::
+
+    cd <uhd-repo-path>/firmware/microblaze directory
+    sudo ./u2_flash_tool --dev=/dev/sd<XXX> -t s/w -w <path_to_firmware_image>
+
+------------------------------------------------------------------------
+Setup networking
+------------------------------------------------------------------------
+The USRP2 only supports gigabit ethernet, and
+will not work with a 10/100 Mbps interface.
+Because the USRP2 uses gigabit ethernet pause frames for flow control,
+you cannot use multiple USRP2s with a switch or a hub.
+It is recommended that each USRP2 be plugged directly into its own
+dedicated gigabit ethernet interface on the host computer.
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Setup the host interface
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+The USRP2 communicates at the IP/UDP layer over the gigabit ethernet.
+The default IP address of the USRP2 is **192.168.10.2**
+You will need to configure the host's ethernet interface with a static IP address to enable communication.
+An address of **192.168.10.1** is recommended.
+
+**Note:**
+When using the UHD, if an IP address for the USRP2 is not specified,
+the software will use UDP broadcast packets to locate the USRP2.
+On some systems, the firewall will block UDP broadcast packets.
+It is recommended that you change or disable your firewall settings. 
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Change the USRP2's IP address
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+You may need to change the USRP2's IP address for several reasons:
+
+* to satisfy your particular network configuration
+* to use multiple USRP2s on the same host computer
+* to set a known IP address into USRP2 (in case you forgot)
+
+**Method 1:**
+To change the USRP2's IP address
+you must know the current address of the USRP2,
+and the network must be setup properly as described above.
+Run the following commands:
+::
+
+    cd <prefix>/share/uhd/utils
+    ./usrp_burner --addr=192.168.10.2 --new-ip=192.168.10.3
+
+**Method 2 (Linux Only):**
+This method assumes that you do not know the IP address of your USRP2.
+It uses raw ethernet packets to bypass the IP/UDP layer to communicate with the USRP2.
+Run the following commands:
+::
+
+    cd <prefix>/share/uhd/utils
+    ./usrp2_recovery.py --ifc=eth0 --new-ip=192.168.10.3
+
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Debugging networking problems
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+**Monitor the USRP2:**
+You can read the serial port on the rear of the USRP2
+to get debug verbose from the embedded microcontroller.
+Use a standard USB to tty-level serial converter at 230400 baud.
+The microcontroller prints useful information about IP addresses,
+MAC addresses, control packets, and fast-path settings.
+
+**Monitor the host network traffic:**
+Use wireshark to monitor packets sent to and received from the USRP2.
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index d49f7d182..4b8774036 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -26,7 +26,7 @@ namespace po = boost::program_options;
 
 int UHD_SAFE_MAIN(int argc, char *argv[]){
     //variables to be set by po
-    std::string transport_args;
+    std::string args;
     int seconds_in_future;
     size_t total_num_samps;
     double rx_rate;
@@ -35,7 +35,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     po::options_description desc("Allowed options");
     desc.add_options()
         ("help", "help message")
-        ("args", po::value<std::string>(&transport_args)->default_value(""), "simple uhd transport args")
+        ("args", po::value<std::string>(&args)->default_value(""), "simple uhd device address args")
         ("secs", po::value<int>(&seconds_in_future)->default_value(3), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
         ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
@@ -52,9 +52,8 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
 
     //create a usrp device
     std::cout << std::endl;
-    std::cout << boost::format("Creating the usrp device with: %s...")
-        % transport_args << std::endl;
-    uhd::usrp::simple_usrp::sptr sdev = uhd::usrp::simple_usrp::make(transport_args);
+    std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+    uhd::usrp::simple_usrp::sptr sdev = uhd::usrp::simple_usrp::make(args);
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_name() << std::endl;
 
diff --git a/host/include/uhd/types/CMakeLists.txt b/host/include/uhd/types/CMakeLists.txt
index e4cdf2cef..dbce21c98 100644
--- a/host/include/uhd/types/CMakeLists.txt
+++ b/host/include/uhd/types/CMakeLists.txt
@@ -25,6 +25,7 @@ INSTALL(FILES
     metadata.hpp
     otw_type.hpp
     ranges.hpp
+    serial.hpp
     stream_cmd.hpp
     time_spec.hpp
     tune_result.hpp
diff --git a/host/include/uhd/types/device_addr.hpp b/host/include/uhd/types/device_addr.hpp
index f5dd9371c..e8da2a1ab 100644
--- a/host/include/uhd/types/device_addr.hpp
+++ b/host/include/uhd/types/device_addr.hpp
@@ -32,13 +32,23 @@ namespace uhd{
      *
      * To narrow down the discovery process to a particular device,
      * specify a transport key/value pair specific to your device.
-     * Ex, to find a usrp2: my_dev_addr["addr"] = [resolvable_hostname_or_ip]
+     * - Ex, to find a usrp2: my_dev_addr["addr"] = [resolvable_hostname_or_ip]
      *
      * The device address can also be used to pass arguments into
      * the transport layer control to set (for example) buffer sizes.
+     *
+     * An arguments string, is a way to represent a device address
+     * using a single string with delimiter characters.
+     * - Ex: addr=192.168.10.2
+     * - Ex: addr=192.168.10.2, rx_buff_size=1e6
      */
     class UHD_API device_addr_t : public dict<std::string, std::string>{
     public:
+        /*!
+         * Create a device address from an args string.
+         * \param args the arguments string
+         */
+        device_addr_t(const std::string &args = "");
 
         /*!
          * Convert a device address into a printable string.
@@ -52,14 +62,6 @@ namespace uhd{
          * \return a string with delimiter markup
          */
         std::string to_args_str(void) const;
-
-        /*!
-         * Make a device address from an args string.
-         * The args string contains delimiter symbols.
-         * \param args_str the arguments string
-         * \return the new device address
-         */
-        static device_addr_t from_args_str(const std::string &args_str);
     };
 
     //handy typedef for a vector of device addresses
diff --git a/host/include/uhd/types/io_type.hpp b/host/include/uhd/types/io_type.hpp
index 930394d1b..5176374d6 100644
--- a/host/include/uhd/types/io_type.hpp
+++ b/host/include/uhd/types/io_type.hpp
@@ -23,6 +23,7 @@
 namespace uhd{
 
     /*!
+     * The Input/Output configuration struct:
      * Used to specify the IO type with device send/recv.
      */
     class UHD_API io_type_t{
diff --git a/host/include/uhd/types/metadata.hpp b/host/include/uhd/types/metadata.hpp
index d93b38b50..55add71cc 100644
--- a/host/include/uhd/types/metadata.hpp
+++ b/host/include/uhd/types/metadata.hpp
@@ -70,7 +70,10 @@ namespace uhd{
          * Timed-out on receive?
          */
 
-        //default constructor
+        /*!
+         * The default constructor:
+         * Sets the fields to default values (flags set to false).
+         */
         rx_metadata_t(void);
     };
 
@@ -103,7 +106,10 @@ namespace uhd{
         bool start_of_burst;
         bool end_of_burst;
 
-        //default constructor
+        /*!
+         * The default constructor:
+         * Sets the fields to default values (flags set to false).
+         */
         tx_metadata_t(void);
     };
 
diff --git a/host/include/uhd/types/serial.hpp b/host/include/uhd/types/serial.hpp
new file mode 100644
index 000000000..c134725f5
--- /dev/null
+++ b/host/include/uhd/types/serial.hpp
@@ -0,0 +1,122 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef INCLUDED_UHD_TYPES_SERIAL_HPP
+#define INCLUDED_UHD_TYPES_SERIAL_HPP
+
+#include <uhd/config.hpp>
+#include <boost/cstdint.hpp>
+#include <vector>
+
+namespace uhd{
+
+    /*!
+     * Byte vector typedef for passing data in and out of I2C interfaces.
+     */
+    typedef std::vector<boost::uint8_t> byte_vector_t;
+
+    /*!
+     * The i2c interface class:
+     * Provides i2c and eeprom functionality.
+     * A subclass should only have to implement the i2c routines.
+     * An eeprom implementation comes for free with the interface.
+     *
+     * The eeprom routines are implemented on top of i2c.
+     * The built in eeprom implementation only does single
+     * byte reads and byte writes over the i2c interface,
+     * so it should be portable across multiple eeproms.
+     * Override the eeprom routines if this is not acceptable.
+     */
+    class UHD_API i2c_iface{
+    public:
+        /*!
+         * Write bytes over the i2c.
+         * \param addr the address
+         * \param buf the vector of bytes
+         */
+        virtual void write_i2c(
+            boost::uint8_t addr,
+            const byte_vector_t &buf
+        ) = 0;
+
+        /*!
+         * Read bytes over the i2c.
+         * \param addr the address
+         * \param num_bytes number of bytes to read
+         * \return a vector of bytes
+         */
+        virtual byte_vector_t read_i2c(
+            boost::uint8_t addr,
+            size_t num_bytes
+        ) = 0;
+
+        /*!
+         * Write bytes to an eeprom.
+         * \param addr the address
+         * \param offset byte offset
+         * \param buf the vector of bytes
+         */
+        virtual void write_eeprom(
+            boost::uint8_t addr,
+            boost::uint8_t offset,
+            const byte_vector_t &buf
+        );
+
+        /*!
+         * Read bytes from an eeprom.
+         * \param addr the address
+         * \param offset byte offset
+         * \param num_bytes number of bytes to read
+         * \return a vector of bytes
+         */
+        virtual byte_vector_t read_eeprom(
+            boost::uint8_t addr,
+            boost::uint8_t offset,
+            size_t num_bytes
+        );
+    };
+
+    /*!
+     * The SPI configuration struct:
+     * Used to configure a SPI transaction interface.
+     */
+    struct UHD_API spi_config_t{
+        /*!
+         * The edge type specifies when data is valid
+         * relative to the edge of the serial clock.
+         */
+        enum edge_t{
+            EDGE_RISE = 'r',
+            EDGE_FALL = 'f'
+        };
+
+        //! on what edge is the mosi data valid?
+        edge_t mosi_edge;
+
+        //! on what edge is the miso data valid?
+        edge_t miso_edge;
+
+        /*!
+         * Create a new spi config.
+         * \param edge the default edge for mosi and miso
+         */
+        spi_config_t(edge_t edge = EDGE_RISE);
+    };
+
+} //namespace uhd
+
+#endif /* INCLUDED_UHD_TYPES_SERIAL_HPP */
diff --git a/host/include/uhd/types/time_spec.hpp b/host/include/uhd/types/time_spec.hpp
index f06d27118..25d9e41d0 100644
--- a/host/include/uhd/types/time_spec.hpp
+++ b/host/include/uhd/types/time_spec.hpp
@@ -28,10 +28,19 @@ namespace uhd{
      * The time_spec_t can be used when setting the time on devices,
      * and for dealing with time stamped samples though the metadata.
      * and for controlling the start of streaming for applicable dsps.
+     *
+     * The fractional seconds are represented in units of nanoseconds,
+     * which provide a clock-domain independent unit of time storage.
+     * The methods "get_ticks" and "set_ticks" can be used to convert
+     * the fractional seconds to and from clock-domain specific units.
+     *
+     * The nanoseconds count is stored as double precision floating point.
+     * This gives the fractional seconds enough precision to unambiguously
+     * specify a clock-tick/sample-count up to rates of several petahertz.
      */
     struct UHD_API time_spec_t{
 
-        //! whole seconds count
+        //! whole/integer seconds count in seconds
         boost::uint32_t secs;
 
         //! fractional seconds count in nano-seconds
@@ -39,24 +48,26 @@ namespace uhd{
 
         /*!
          * Convert the fractional nsecs to clock ticks.
+         * Translation into clock-domain specific units.
          * \param tick_rate the number of ticks per second
-         * \return the number of ticks in this time spec
+         * \return the fractional seconds tick count
          */
         boost::uint32_t get_ticks(double tick_rate) const;
 
         /*!
          * Set the fractional nsecs from clock ticks.
+         * Translation from clock-domain specific units.
          * \param ticks the fractional seconds tick count
          * \param tick_rate the number of ticks per second
          */
         void set_ticks(boost::uint32_t ticks, double tick_rate);
 
         /*!
-         * Create a time_spec_t from seconds and ticks.
-         * \param new_secs the new seconds (default = 0)
-         * \param new_nsecs the new nano-seconds (default = 0)
+         * Create a time_spec_t from whole and fractional seconds.
+         * \param secs the whole/integer seconds count in seconds (default = 0)
+         * \param nsecs the fractional seconds count in nanoseconds (default = 0)
          */
-        time_spec_t(boost::uint32_t new_secs = 0, double new_nsecs = 0);
+        time_spec_t(boost::uint32_t secs = 0, double nsecs = 0);
 
     };
 
diff --git a/host/include/uhd/usrp/CMakeLists.txt b/host/include/uhd/usrp/CMakeLists.txt
index 4b880308e..ff2636d8c 100644
--- a/host/include/uhd/usrp/CMakeLists.txt
+++ b/host/include/uhd/usrp/CMakeLists.txt
@@ -26,6 +26,7 @@ INSTALL(FILES
 
     #### dboard headers ###
     dboard_base.hpp
+    dboard_eeprom.hpp
     dboard_id.hpp
     dboard_iface.hpp
     dboard_manager.hpp
diff --git a/host/include/uhd/usrp/dboard_eeprom.hpp b/host/include/uhd/usrp/dboard_eeprom.hpp
new file mode 100644
index 000000000..108027b46
--- /dev/null
+++ b/host/include/uhd/usrp/dboard_eeprom.hpp
@@ -0,0 +1,60 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef INCLUDED_UHD_USRP_DBOARD_EEPROM_HPP
+#define INCLUDED_UHD_USRP_DBOARD_EEPROM_HPP
+
+#include <uhd/config.hpp>
+#include <uhd/usrp/dboard_id.hpp>
+#include <uhd/types/serial.hpp>
+#include <string>
+
+namespace uhd{ namespace usrp{
+
+struct UHD_API dboard_eeprom_t{
+    /*!
+     * The dboard id that was read from eeprom or will be set to eeprom.
+     */
+    dboard_id_t id;
+
+    /*!
+     * Create a dboard eeprom struct from the bytes read out of eeprom.
+     * The constructor will parse out the dboard id from a vector of bytes.
+     * To be valid, the bytes vector should be at least num_bytes() long.
+     * If the parsing fails due to bad checksum or incomplete length,
+     * the dboard id in this struct will be set to dboard_id::NONE.
+     * \param bytes the vector of bytes
+     */
+    dboard_eeprom_t(const uhd::byte_vector_t &bytes = uhd::byte_vector_t(0));
+
+    /*!
+     * Get the bytes that would be written to dboard eeprom.
+     * \return a vector of bytes
+     */
+    uhd::byte_vector_t get_eeprom_bytes(void);
+
+    /*!
+     * Get the number of bytes in the dboard eeprom segment.
+     * Use this value when reading out of the dboard eeprom.
+     * \return the number of bytes used by dboard eeprom
+     */
+    static size_t num_bytes(void);
+};
+
+}} //namespace
+
+#endif /* INCLUDED_UHD_USRP_DBOARD_EEPROM_HPP */
diff --git a/host/include/uhd/usrp/dboard_iface.hpp b/host/include/uhd/usrp/dboard_iface.hpp
index 71c7be200..1214a1a2f 100644
--- a/host/include/uhd/usrp/dboard_iface.hpp
+++ b/host/include/uhd/usrp/dboard_iface.hpp
@@ -19,39 +19,12 @@
 #define INCLUDED_UHD_USRP_DBOARD_IFACE_HPP
 
 #include <uhd/config.hpp>
+#include <uhd/types/serial.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/cstdint.hpp>
-#include <vector>
 
 namespace uhd{ namespace usrp{
 
-//spi configuration struct
-struct UHD_API spi_config_t{
-    /*!
-     * The edge type specifies when data is valid
-     * relative to the edge of the serial clock.
-     */
-    enum edge_t{
-        EDGE_RISE = 'r',
-        EDGE_FALL = 'f'
-    };
-
-    //! on what edge is the mosi data valid?
-    edge_t mosi_edge;
-
-    //! on what edge is the miso data valid?
-    edge_t miso_edge;
-
-    /*!
-     * Create a new spi config.
-     * \param edge the default edge for mosi and miso
-     */
-    spi_config_t(edge_t edge = EDGE_RISE){
-        mosi_edge = edge;
-        miso_edge = edge;
-    }
-};
-
 /*!
  * The daughter board dboard interface to be subclassed.
  * A dboard instance interfaces with the mboard though this api.
@@ -61,7 +34,6 @@ struct UHD_API spi_config_t{
 class UHD_API dboard_iface{
 public:
     typedef boost::shared_ptr<dboard_iface> sptr;
-    typedef std::vector<boost::uint8_t> byte_vector_t;
 
     //tells the host which unit to use
     enum unit_t{
@@ -123,19 +95,19 @@ public:
     /*!
      * Write to an I2C peripheral.
      *
-     * \param i2c_addr I2C bus address (7-bits)
-     * \param buf the data to write
+     * \param addr I2C bus address (7-bits)
+     * \param bytes the data to write
      */
-    virtual void write_i2c(int i2c_addr, const byte_vector_t &buf) = 0;
+    virtual void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes) = 0;
 
     /*!
      * Read from an I2C peripheral.
      *
-     * \param i2c_addr I2C bus address (7-bits)
+     * \param addr I2C bus address (7-bits)
      * \param num_bytes number of bytes to read
      * \return the data read if successful, else a zero length string.
      */
-    virtual byte_vector_t read_i2c(int i2c_addr, size_t num_bytes) = 0;
+    virtual byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes) = 0;
 
     /*!
      * Write data to SPI bus peripheral.
diff --git a/host/include/uhd/usrp/dboard_manager.hpp b/host/include/uhd/usrp/dboard_manager.hpp
index 6de64b02d..007d85bb4 100644
--- a/host/include/uhd/usrp/dboard_manager.hpp
+++ b/host/include/uhd/usrp/dboard_manager.hpp
@@ -33,7 +33,6 @@ namespace uhd{ namespace usrp{
  * Provide wax::obj access to the subdevs inside.
  */
 class UHD_API dboard_manager : boost::noncopyable{
-
 public:
     typedef boost::shared_ptr<dboard_manager> sptr;
 
diff --git a/host/include/uhd/usrp/dboard_props.hpp b/host/include/uhd/usrp/dboard_props.hpp
index 3b290319f..0208a6c2c 100644
--- a/host/include/uhd/usrp/dboard_props.hpp
+++ b/host/include/uhd/usrp/dboard_props.hpp
@@ -29,7 +29,8 @@ namespace uhd{ namespace usrp{
         DBOARD_PROP_NAME         = 'n', //ro, std::string
         DBOARD_PROP_SUBDEV       = 's', //ro, wax::obj
         DBOARD_PROP_SUBDEV_NAMES = 'S', //ro, prop_names_t
-        DBOARD_PROP_USED_SUBDEVS = 'u'  //ro, prop_names_t
+        DBOARD_PROP_USED_SUBDEVS = 'u', //ro, prop_names_t
+        DBOARD_PROP_DBOARD_ID    = 'i'  //rw, dboard_id_t
         //DBOARD_PROP_CODEC              //ro, wax::obj //----> not sure, dont have to deal with yet
     }; 
 
diff --git a/host/include/uhd/usrp/simple_usrp.hpp b/host/include/uhd/usrp/simple_usrp.hpp
index c4e0338f7..c4142b4e6 100644
--- a/host/include/uhd/usrp/simple_usrp.hpp
+++ b/host/include/uhd/usrp/simple_usrp.hpp
@@ -39,20 +39,72 @@ namespace uhd{ namespace usrp{
 class UHD_API simple_usrp : boost::noncopyable{
 public:
     typedef boost::shared_ptr<simple_usrp> sptr;
-    static sptr make(const std::string &args);
 
+    /*!
+     * Make a new simple usrp from the device address.
+     * \param dev_addr the device address
+     * \return a new simple usrp object
+     */
+    static sptr make(const device_addr_t &dev_addr);
+
+    /*!
+     * Get the underlying device object.
+     * This is needed to get access to the streaming API and properties.
+     * \return the device object within this simple usrp
+     */
     virtual device::sptr get_device(void) = 0;
 
+    /*!
+     * Get a printable name for this simple usrp.
+     * \return a printable string
+     */
     virtual std::string get_name(void) = 0;
 
     /*******************************************************************
      * Misc
      ******************************************************************/
+    /*!
+     * Sets the time registers on the usrp immediately.
+     * \param time_spec the time to latch into the usrp device
+     */
     virtual void set_time_now(const time_spec_t &time_spec) = 0;
+
+    /*!
+     * Set the time registers on the usrp at the next pps tick.
+     * The values will not be latched in until the pulse occurs.
+     * It is recommended that the user sleep(1) after calling to ensure
+     * that the time registers will be in a known state prior to use.
+     *
+     * Note: Because this call sets the time on the "next" pps,
+     * the seconds in the time spec should be current seconds + 1.
+     *
+     * \param time_spec the time to latch into the usrp device
+     */
     virtual void set_time_next_pps(const time_spec_t &time_spec) = 0;
+
+    /*!
+     * Issue a stream command to the usrp device.
+     * This tells the usrp to send samples into the host.
+     * See the documentation for stream_cmd_t for more info.
+     * \param stream_cmd the stream command to issue
+     */
     virtual void issue_stream_cmd(const stream_cmd_t &stream_cmd) = 0;
+
+    /*!
+     * Set the clock configuration for the usrp device.
+     * This tells the usrp how to get a 10Mhz reference and PPS clock.
+     * See the documentation for clock_config_t for more info.
+     * \param clock_config the clock configuration to set
+     */
     virtual void set_clock_config(const clock_config_t &clock_config) = 0;
 
+    /*!
+     * Read the RSSI value from a usrp device.
+     * Or throw if the dboard does not support an RSSI readback.
+     * \return the rssi in dB
+     */
+    virtual float read_rssi(void) = 0;
+
     /*******************************************************************
      * RX methods
      ******************************************************************/
@@ -70,6 +122,8 @@ public:
     virtual std::string get_rx_antenna(void) = 0;
     virtual std::vector<std::string> get_rx_antennas(void) = 0;
 
+    virtual bool get_rx_lo_locked(void) = 0;
+
     /*******************************************************************
      * TX methods
      ******************************************************************/
@@ -86,6 +140,8 @@ public:
     virtual void set_tx_antenna(const std::string &ant) = 0;
     virtual std::string get_tx_antenna(void) = 0;
     virtual std::vector<std::string> get_tx_antennas(void) = 0;
+
+    virtual bool get_tx_lo_locked(void) = 0;
 };
 
 }}
diff --git a/host/include/uhd/usrp/subdev_props.hpp b/host/include/uhd/usrp/subdev_props.hpp
index cd6b14ef5..1f8e91d68 100644
--- a/host/include/uhd/usrp/subdev_props.hpp
+++ b/host/include/uhd/usrp/subdev_props.hpp
@@ -35,13 +35,13 @@ namespace uhd{ namespace usrp{
         SUBDEV_PROP_FREQ_RANGE        = 'F', //ro, freq_range_t
         SUBDEV_PROP_ANTENNA           = 'a', //rw, std::string
         SUBDEV_PROP_ANTENNA_NAMES     = 'A', //ro, prop_names_t
-        //SUBDEV_PROP_ENABLED           = 'e', //rw, bool //---> dont need, we have atr
+        SUBDEV_PROP_LO_LOCKED         = 'L', //ro, bool
         SUBDEV_PROP_QUADRATURE        = 'q', //ro, bool
         SUBDEV_PROP_IQ_SWAPPED        = 'i', //ro, bool
         SUBDEV_PROP_SPECTRUM_INVERTED = 's', //ro, bool
-        SUBDEV_PROP_USE_LO_OFFSET     = 'l'  //ro, bool
-        //SUBDEV_PROP_RSSI,              //ro, float //----> not on all boards, use named prop
-        //SUBDEV_PROP_BANDWIDTH          //rw, double //----> not on all boards, use named prop
+        SUBDEV_PROP_USE_LO_OFFSET     = 'l', //ro, bool
+        SUBDEV_PROP_RSSI              = 'R', //ro, float
+        SUBDEV_PROP_BANDWIDTH         = 'B'  //rw, double
     };
 
 }} //namespace
diff --git a/host/include/uhd/utils/assert.hpp b/host/include/uhd/utils/assert.hpp
index 842ed8dfa..01beed757 100644
--- a/host/include/uhd/utils/assert.hpp
+++ b/host/include/uhd/utils/assert.hpp
@@ -18,27 +18,27 @@
 #ifndef INCLUDED_UHD_UTILS_ASSERT_HPP
 #define INCLUDED_UHD_UTILS_ASSERT_HPP
 
+#include <uhd/config.hpp>
 #include <uhd/utils/algorithm.hpp>
 #include <boost/format.hpp>
 #include <boost/foreach.hpp>
 #include <boost/lexical_cast.hpp>
-#include <boost/current_function.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/exception/info.hpp>
 #include <stdexcept>
+#include <string>
 
 namespace uhd{
 
-    class assert_error : public std::logic_error{
-    public:
-        explicit assert_error(const std::string& what_arg) : logic_error(what_arg){
-            /* NOP */
-        }
-    };
+    //! The exception to throw when assertions fail
+    struct UHD_API assert_error : virtual std::exception, virtual boost::exception{};
 
-    #define ASSERT_THROW(_x) if (not (_x)) { \
-        throw uhd::assert_error(str(boost::format( \
-            "Assertion Failed:\n  %s:%d\n  %s\n  ---> %s <---" \
-        ) % __FILE__ % __LINE__ % BOOST_CURRENT_FUNCTION % std::string(#_x))); \
-    }
+    //! The assertion info, the code that failed
+    typedef boost::error_info<struct tag_assert_info, std::string> assert_info;
+
+    //! Throw an assert error with throw-site information
+    #define UHD_ASSERT_THROW(_x) if (not (_x)) \
+        BOOST_THROW_EXCEPTION(uhd::assert_error() << uhd::assert_info(#_x))
 
     /*!
      * Check that an element is found in a container.
@@ -58,17 +58,18 @@ namespace uhd{
     ){
         if (std::has(iterable, elem)) return;
         std::string possible_values = "";
-        BOOST_FOREACH(T e, iterable){
-            if (e != iterable.begin()[0]) possible_values += ", ";
+        size_t i = 0;
+        BOOST_FOREACH(const T &e, iterable){
+            if (i++ > 0) possible_values += ", ";
             possible_values += boost::lexical_cast<std::string>(e);
         }
-        throw uhd::assert_error(str(boost::format(
+        boost::throw_exception(uhd::assert_error() << assert_info(str(boost::format(
                 "Error: %s is not a valid %s. "
                 "Possible values are: [%s]."
             )
             % boost::lexical_cast<std::string>(elem)
             % what % possible_values
-        ));
+        )));
     }
 
 }//namespace uhd
diff --git a/host/include/uhd/utils/props.hpp b/host/include/uhd/utils/props.hpp
index 6be0b2ce5..516102a5f 100644
--- a/host/include/uhd/utils/props.hpp
+++ b/host/include/uhd/utils/props.hpp
@@ -21,27 +21,63 @@
 #include <uhd/config.hpp>
 #include <uhd/wax.hpp>
 #include <boost/tuple/tuple.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/exception/info.hpp>
+#include <stdexcept>
 #include <vector>
 #include <string>
 
 namespace uhd{
 
-    //typedef for handling named properties
+    //! The type for a vector of property names
     typedef std::vector<std::string> prop_names_t;
-    typedef boost::tuple<wax::obj, std::string> named_prop_t;
+
+    /*!
+     * A named prop struct holds a key and a name.
+     * Allows properties to be sub-sectioned by name.
+     */
+    struct UHD_API named_prop_t{
+        wax::obj key;
+        std::string name;
+
+        /*!
+         * Create a new named prop from key and name.
+         * \param key the property key
+         * \param name the string name
+         */
+        named_prop_t(const wax::obj &key, const std::string &name);
+    };
 
     /*!
      * Utility function to separate a named property into its components.
      * \param key a reference to the prop object
      * \param name a reference to the name object
+     * \return a tuple that can be used with boost::tie
+     */
+    UHD_API boost::tuple<wax::obj, std::string> extract_named_prop(
+        const wax::obj &key,
+        const std::string &name = ""
+    );
+
+    //! The exception to throw for property errors
+    struct UHD_API prop_error : virtual std::exception, virtual boost::exception{};
+
+    //! The property error info (verbose or message)
+    typedef boost::error_info<struct tag_prop_info, std::string> prop_info;
+
+    /*!
+     * Throw when getting a not-implemented or write-only property.
+     * Throw-site information will be included with this error.
+     */
+    #define UHD_THROW_PROP_GET_ERROR() \
+        BOOST_THROW_EXCEPTION(uhd::prop_error() << uhd::prop_info("cannot get this property"))
+
+    /*!
+     * Throw when setting a not-implemented or read-only property.
+     * Throw-site information will be included with this error.
      */
-    inline UHD_API named_prop_t //must be exported as part of the api to work (TODO move guts to cpp file)
-    extract_named_prop(const wax::obj &key, const std::string &name = ""){
-        if (key.type() == typeid(named_prop_t)){
-            return key.as<named_prop_t>();
-        }
-        return named_prop_t(key, name);
-    }
+    #define UHD_THROW_PROP_SET_ERROR() \
+        BOOST_THROW_EXCEPTION(uhd::prop_error() << uhd::prop_info("cannot set this property"))
 
 } //namespace uhd
 
diff --git a/host/include/uhd/utils/safe_main.hpp b/host/include/uhd/utils/safe_main.hpp
index b682aa540..a4e4e06e8 100644
--- a/host/include/uhd/utils/safe_main.hpp
+++ b/host/include/uhd/utils/safe_main.hpp
@@ -19,6 +19,7 @@
 #define INCLUDED_UHD_UTILS_SAFE_MAIN_HPP
 
 #include <uhd/config.hpp>
+#include <boost/exception/diagnostic_information.hpp>
 #include <iostream>
 #include <stdexcept>
 
@@ -33,6 +34,8 @@
 int main(int argc, char *argv[]){ \
     try { \
         return _main(argc, argv); \
+    } catch(const boost::exception &e){ \
+        std::cerr << "Error: " << boost::diagnostic_information(e) << std::endl; \
     } catch(const std::exception &e) { \
         std::cerr << "Error: " << e.what() << std::endl; \
     } catch(...) { \
diff --git a/host/lib/CMakeLists.txt b/host/lib/CMakeLists.txt
index ff7f2c0df..48fee5a80 100644
--- a/host/lib/CMakeLists.txt
+++ b/host/lib/CMakeLists.txt
@@ -50,13 +50,13 @@ SET(libuhd_sources
     gain_handler.cpp
     load_modules.cpp
     types.cpp
+    utils.cpp
     wax.cpp
     transport/convert_types.cpp
     transport/if_addrs.cpp
     transport/udp_simple.cpp
-    usrp/dboard/db_basic_and_lf.cpp
-    usrp/dboard/db_rfx.cpp
     usrp/dboard_base.cpp
+    usrp/dboard_eeprom.cpp
     usrp/simple_usrp.cpp
     usrp/dboard_manager.cpp
     usrp/tune_helper.cpp
@@ -66,11 +66,18 @@ SET(libuhd_sources
 # Generate Files
 ########################################################################
 MACRO(UHD_PYTHON_GEN_SOURCE_FILE pyfile outfile)
+    #ensure that the directory exists for outfile
+    GET_FILENAME_COMPONENT(outfile_dir ${outfile} PATH)
+    FILE(MAKE_DIRECTORY ${outfile_dir})
+
+    #make the outfile depend on the python script
     ADD_CUSTOM_COMMAND(
         OUTPUT ${outfile} DEPENDS ${pyfile}
         COMMAND ${PYTHON_EXECUTABLE} ${pyfile} ${outfile}
-        COMMENT "Calling ${pyfile} to generate ${outfile}"
+        COMMENT "Generating ${outfile}"
     )
+
+    #make libuhd depend on the outfile
     LIST(APPEND libuhd_sources ${outfile})
 ENDMACRO(UHD_PYTHON_GEN_SOURCE_FILE)
 
@@ -96,6 +103,29 @@ UHD_PYTHON_GEN_SOURCE_FILE(
     ${CMAKE_CURRENT_BINARY_DIR}/ic_reg_maps/ad9777_regs.hpp
 )
 
+UHD_PYTHON_GEN_SOURCE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/ic_reg_maps/gen_ad5624_regs.py
+    ${CMAKE_CURRENT_BINARY_DIR}/ic_reg_maps/ad5624_regs.hpp
+)
+
+UHD_PYTHON_GEN_SOURCE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/ic_reg_maps/gen_ad7922_regs.py
+    ${CMAKE_CURRENT_BINARY_DIR}/ic_reg_maps/ad7922_regs.hpp
+)
+
+UHD_PYTHON_GEN_SOURCE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/ic_reg_maps/gen_max2829_regs.py
+    ${CMAKE_CURRENT_BINARY_DIR}/ic_reg_maps/max2829_regs.hpp
+)
+
+########################################################################
+# Add dboard sources
+########################################################################
+LIST(APPEND libuhd_sources
+    usrp/dboard/db_basic_and_lf.cpp
+    usrp/dboard/db_rfx.cpp
+    usrp/dboard/db_xcvr2450.cpp
+)
 
 ########################################################################
 # Add usrp2 sources
diff --git a/host/lib/device.cpp b/host/lib/device.cpp
index 0197a6232..706f64951 100644
--- a/host/lib/device.cpp
+++ b/host/lib/device.cpp
@@ -132,8 +132,8 @@ device::sptr device::make(const device_addr_t &hint, size_t which){
 
     //try to find an existing device
     try{
-        ASSERT_THROW(hash_to_device.has_key(dev_hash));
-        ASSERT_THROW(not hash_to_device[dev_hash].expired());
+        UHD_ASSERT_THROW(hash_to_device.has_key(dev_hash));
+        UHD_ASSERT_THROW(not hash_to_device[dev_hash].expired());
         return hash_to_device[dev_hash].lock();
     }
     //create and register a new device
diff --git a/host/lib/ic_reg_maps/.gitignore b/host/lib/ic_reg_maps/.gitignore
new file mode 100644
index 000000000..a74b07aee
--- /dev/null
+++ b/host/lib/ic_reg_maps/.gitignore
@@ -0,0 +1 @@
+/*.pyc
diff --git a/host/lib/ic_reg_maps/common.py b/host/lib/ic_reg_maps/common.py
new file mode 100644
index 000000000..d05470706
--- /dev/null
+++ b/host/lib/ic_reg_maps/common.py
@@ -0,0 +1,60 @@
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import re
+import math
+from Cheetah.Template import Template
+
+def parse_tmpl(_tmpl_text, **kwargs):
+    return str(Template(_tmpl_text, kwargs))
+
+class reg:
+    def __init__(self, reg_des):
+        x = re.match('^(\w*)\s*(\w*)\[(.*)\]\s*(\w*)\s*(.*)$', reg_des)
+        name, addr, bit_range, default, enums = x.groups()
+
+        #store variables
+        self._name = name
+        self._addr = int(addr, 16)
+        if ':' in bit_range: self._addr_spec = sorted(map(int, bit_range.split(':')))
+        else: self._addr_spec = int(bit_range), int(bit_range)
+        self._default = int(default, 16)
+
+        #extract enum
+        self._enums = list()
+        if enums:
+            enum_val = 0
+            for enum_str in map(str.strip, enums.split(',')):
+                if '=' in enum_str:
+                    enum_name, enum_val = enum_str.split('=')
+                    enum_val = int(enum_val)
+                else: enum_name = enum_str
+                self._enums.append((enum_name, enum_val))
+                enum_val += 1
+
+    def get_addr(self): return self._addr
+    def get_enums(self): return self._enums
+    def get_name(self): return self._name
+    def get_default(self):
+        for key, val in self.get_enums():
+            if val == self._default: return str.upper('%s_%s'%(self.get_name(), key))
+        return self._default
+    def get_stdint_type(self):\
+        return 'uint%d_t'%max(2**math.ceil(math.log(self.get_bit_width(), 2)), 8)
+    def get_shift(self): return self._addr_spec[0]
+    def get_mask(self): return hex(int('1'*self.get_bit_width(), 2))
+    def get_bit_width(self): return self._addr_spec[1] - self._addr_spec[0] + 1
diff --git a/host/lib/ic_reg_maps/gen_ad5624_regs.py b/host/lib/ic_reg_maps/gen_ad5624_regs.py
new file mode 100755
index 000000000..9e8ae5be5
--- /dev/null
+++ b/host/lib/ic_reg_maps/gen_ad5624_regs.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+from common import *
+
+########################################################################
+# Template for raw text data describing registers
+# name addr[bit range inclusive] default optional enums
+########################################################################
+REGS_DATA_TMPL="""\
+data             0[4:15]           0
+addr             0[16:18]          0       DAC_A=0, DAC_B=1, DAC_C=2, DAC_D=3, ALL=7
+cmd              0[19:21]          0       wr_input_n, up_dac_n, wr_input_n_up_all, wr_up_dac_chan_n, power_down, reset, load_ldac
+"""
+
+########################################################################
+# Header and Source templates below
+########################################################################
+HEADER_TEXT="""
+#import time
+
+/***********************************************************************
+ * This file was generated by $file on $time.strftime("%c")
+ **********************************************************************/
+
+\#ifndef INCLUDED_AD5624_REGS_HPP
+\#define INCLUDED_AD5624_REGS_HPP
+
+\#include <boost/cstdint.hpp>
+
+struct ad5624_regs_t{
+#for $reg in $regs
+    #if $reg.get_enums()
+    enum $(reg.get_name())_t{
+        #for $i, $enum in enumerate($reg.get_enums())
+        #set $end_comma = ',' if $i < len($reg.get_enums())-1 else ''
+        $(reg.get_name().upper())_$(enum[0].upper()) = $enum[1]$end_comma
+        #end for
+    } $reg.get_name();
+    #else
+    boost::$reg.get_stdint_type() $reg.get_name();
+    #end if
+#end for
+
+    ad5624_regs_t(void){
+#for $reg in $regs
+        $reg.get_name() = $reg.get_default();
+#end for
+    }
+
+    boost::uint32_t get_reg(void){
+        boost::uint32_t reg = 0;
+        #for $reg in filter(lambda r: r.get_addr() == 0, $regs)
+        reg |= (boost::uint32_t($reg.get_name()) & $reg.get_mask()) << $reg.get_shift();
+        #end for
+        return reg;
+    }
+
+};
+
+\#endif /* INCLUDED_AD5624_REGS_HPP */
+"""
+
+if __name__ == '__main__':
+    regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
+    open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/ic_reg_maps/gen_ad7922_regs.py b/host/lib/ic_reg_maps/gen_ad7922_regs.py
new file mode 100755
index 000000000..23f28c0da
--- /dev/null
+++ b/host/lib/ic_reg_maps/gen_ad7922_regs.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+from common import *
+
+########################################################################
+# Template for raw text data describing registers
+# name addr[bit range inclusive] default optional enums
+########################################################################
+REGS_DATA_TMPL="""\
+result           0[0:11]        0
+mod              0[12]          0
+chn              0[13]          0
+"""
+
+########################################################################
+# Header and Source templates below
+########################################################################
+HEADER_TEXT="""
+#import time
+
+/***********************************************************************
+ * This file was generated by $file on $time.strftime("%c")
+ **********************************************************************/
+
+\#ifndef INCLUDED_AD7922_REGS_HPP
+\#define INCLUDED_AD7922_REGS_HPP
+
+\#include <boost/cstdint.hpp>
+
+struct ad7922_regs_t{
+#for $reg in $regs
+    #if $reg.get_enums()
+    enum $(reg.get_name())_t{
+        #for $i, $enum in enumerate($reg.get_enums())
+        #set $end_comma = ',' if $i < len($reg.get_enums())-1 else ''
+        $(reg.get_name().upper())_$(enum[0].upper()) = $enum[1]$end_comma
+        #end for
+    } $reg.get_name();
+    #else
+    boost::$reg.get_stdint_type() $reg.get_name();
+    #end if
+#end for
+
+    ad7922_regs_t(void){
+#for $reg in $regs
+        $reg.get_name() = $reg.get_default();
+#end for
+    }
+
+    boost::uint16_t get_reg(void){
+        boost::uint16_t reg = 0;
+        #for $reg in filter(lambda r: r.get_addr() == 0, $regs)
+        reg |= (boost::uint32_t($reg.get_name()) & $reg.get_mask()) << $reg.get_shift();
+        #end for
+        return reg;
+    }
+
+    void set_reg(boost::uint16_t reg){
+        #for $reg in filter(lambda r: r.get_addr() == 0, $regs)
+        $reg.get_name() = (reg >> $reg.get_shift()) & $reg.get_mask();
+        #end for
+    }
+
+};
+
+\#endif /* INCLUDED_AD7922_REGS_HPP */
+"""
+
+if __name__ == '__main__':
+    regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
+    open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/ic_reg_maps/gen_ad9510_regs.py b/host/lib/ic_reg_maps/gen_ad9510_regs.py
index 90230b8f9..2dc19c691 100755
--- a/host/lib/ic_reg_maps/gen_ad9510_regs.py
+++ b/host/lib/ic_reg_maps/gen_ad9510_regs.py
@@ -1,32 +1,23 @@
 #!/usr/bin/env python
 #
-# Copyright 2008,2009 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either asversion 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
 
-import re
-import os
 import sys
-from Cheetah.Template import Template
-def parse_tmpl(_tmpl_text, **kwargs):
-    return str(Template(_tmpl_text, kwargs))
-def safe_makedirs(path):
-    not os.path.isdir(path) and os.makedirs(path)
+from common import *
 
 ########################################################################
 # Template for raw text data describing registers
@@ -177,48 +168,6 @@ struct ad9510_regs_t{
 \#endif /* INCLUDED_AD9510_REGS_HPP */
 """
 
-class reg:
-    def __init__(self, reg_des):
-        x = re.match('^(\w*)\s*(\w*)\[(.*)\]\s*(\w*)\s*(.*)$', reg_des)
-        name, addr, bit_range, default, enums = x.groups()
-
-        #store variables
-        self._name = name
-        self._addr = int(addr, 16)
-        if ':' in bit_range: self._addr_spec = map(int, bit_range.split(':'))
-        else: self._addr_spec = int(bit_range), int(bit_range)
-        self._default = int(default, 16)
-
-        #extract enum
-        self._enums = list()
-        if enums:
-            enum_val = 0
-            for enum_str in map(str.strip, enums.split(',')):
-                if '=' in enum_str:
-                    enum_name, enum_val = enum_str.split('=')
-                    enum_val = int(enum_val)
-                else: enum_name = enum_str
-                self._enums.append((enum_name, enum_val))
-                enum_val += 1
-
-    def get_addr(self): return self._addr
-    def get_enums(self): return self._enums
-    def get_name(self): return self._name
-    def get_default(self):
-        for key, val in self.get_enums():
-            if val == self._default: return str.upper('%s_%s'%(self.get_name(), key))
-        return self._default
-    def get_stdint_type(self):
-        if self.get_bit_width() <=  8: return 'uint8_t'
-        if self.get_bit_width() <= 16: return 'uint16_t'
-        if self.get_bit_width() <= 32: return 'uint32_t'
-        if self.get_bit_width() <= 64: return 'uint64_t'
-        raise Exception, 'too damn big'
-    def get_shift(self): return self._addr_spec[0]
-    def get_mask(self): return hex(int('1'*self.get_bit_width(), 2))
-    def get_bit_width(self): return self._addr_spec[1] - self._addr_spec[0] + 1
-
 if __name__ == '__main__':
     regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
-    safe_makedirs(os.path.dirname(sys.argv[1]))
     open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/ic_reg_maps/gen_ad9777_regs.py b/host/lib/ic_reg_maps/gen_ad9777_regs.py
index 6077b61b6..2ac73efcf 100644..100755
--- a/host/lib/ic_reg_maps/gen_ad9777_regs.py
+++ b/host/lib/ic_reg_maps/gen_ad9777_regs.py
@@ -1,32 +1,23 @@
 #!/usr/bin/env python
 #
-# Copyright 2008,2009 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either asversion 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
 
-import re
-import os
 import sys
-from Cheetah.Template import Template
-def parse_tmpl(_tmpl_text, **kwargs):
-    return str(Template(_tmpl_text, kwargs))
-def safe_makedirs(path):
-    not os.path.isdir(path) and os.makedirs(path)
+from common import *
 
 ########################################################################
 # Template for raw text data describing registers
@@ -155,48 +146,6 @@ struct ad9777_regs_t{
 \#endif /* INCLUDED_AD9777_REGS_HPP */
 """
 
-class reg:
-    def __init__(self, reg_des):
-        x = re.match('^(\w*)\s*(\w*)\[(.*)\]\s*(\w*)\s*(.*)$', reg_des)
-        name, addr, bit_range, default, enums = x.groups()
-
-        #store variables
-        self._name = name
-        self._addr = int(addr, 16)
-        if ':' in bit_range: self._addr_spec = sorted(map(int, bit_range.split(':')))
-        else: self._addr_spec = int(bit_range), int(bit_range)
-        self._default = int(default, 16)
-
-        #extract enum
-        self._enums = list()
-        if enums:
-            enum_val = 0
-            for enum_str in map(str.strip, enums.split(',')):
-                if '=' in enum_str:
-                    enum_name, enum_val = enum_str.split('=')
-                    enum_val = int(enum_val)
-                else: enum_name = enum_str
-                self._enums.append((enum_name, enum_val))
-                enum_val += 1
-
-    def get_addr(self): return self._addr
-    def get_enums(self): return self._enums
-    def get_name(self): return self._name
-    def get_default(self):
-        for key, val in self.get_enums():
-            if val == self._default: return str.upper('%s_%s'%(self.get_name(), key))
-        return self._default
-    def get_stdint_type(self):
-        if self.get_bit_width() <=  8: return 'uint8_t'
-        if self.get_bit_width() <= 16: return 'uint16_t'
-        if self.get_bit_width() <= 32: return 'uint32_t'
-        if self.get_bit_width() <= 64: return 'uint64_t'
-        raise Exception, 'too damn big'
-    def get_shift(self): return self._addr_spec[0]
-    def get_mask(self): return hex(int('1'*self.get_bit_width(), 2))
-    def get_bit_width(self): return self._addr_spec[1] - self._addr_spec[0] + 1
-
 if __name__ == '__main__':
     regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
-    safe_makedirs(os.path.dirname(sys.argv[1]))
     open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/ic_reg_maps/gen_adf4360_regs.py b/host/lib/ic_reg_maps/gen_adf4360_regs.py
index bcad1ffd3..478e471a3 100755
--- a/host/lib/ic_reg_maps/gen_adf4360_regs.py
+++ b/host/lib/ic_reg_maps/gen_adf4360_regs.py
@@ -1,32 +1,23 @@
 #!/usr/bin/env python
 #
-# Copyright 2008,2009 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either asversion 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
 
-import re
-import os
 import sys
-from Cheetah.Template import Template
-def parse_tmpl(_tmpl_text, **kwargs):
-    return str(Template(_tmpl_text, kwargs))
-def safe_makedirs(path):
-    not os.path.isdir(path) and os.makedirs(path)
+from common import *
 
 ########################################################################
 # Template for raw text data describing registers
@@ -126,48 +117,6 @@ struct adf4360_regs_t{
 \#endif /* INCLUDED_ADF4360_REGS_HPP */
 """
 
-class reg:
-    def __init__(self, reg_des):
-        x = re.match('^(\w*)\s*(\w*)\[(.*)\]\s*(\w*)\s*(.*)$', reg_des)
-        name, addr, bit_range, default, enums = x.groups()
-
-        #store variables
-        self._name = name
-        self._addr = int(addr)
-        if ':' in bit_range: self._addr_spec = map(int, bit_range.split(':'))
-        else: self._addr_spec = int(bit_range), int(bit_range)
-        self._default = int(default)
-
-        #extract enum
-        self._enums = list()
-        if enums:
-            enum_val = 0
-            for enum_str in map(str.strip, enums.split(',')):
-                if '=' in enum_str:
-                    enum_name, enum_val = enum_str.split('=')
-                    enum_val = int(enum_val)
-                else: enum_name = enum_str
-                self._enums.append((enum_name, enum_val))
-                enum_val += 1
-
-    def get_addr(self): return self._addr
-    def get_enums(self): return self._enums
-    def get_name(self): return self._name
-    def get_default(self):
-        for key, val in self.get_enums():
-            if val == self._default: return str.upper('%s_%s'%(self.get_name(), key))
-        return self._default
-    def get_stdint_type(self):
-        if self.get_bit_width() <=  8: return 'uint8_t'
-        if self.get_bit_width() <= 16: return 'uint16_t'
-        if self.get_bit_width() <= 32: return 'uint32_t'
-        if self.get_bit_width() <= 64: return 'uint64_t'
-        raise Exception, 'too damn big'
-    def get_shift(self): return self._addr_spec[0]
-    def get_mask(self): return hex(int('1'*self.get_bit_width(), 2))
-    def get_bit_width(self): return self._addr_spec[1] - self._addr_spec[0] + 1
-
 if __name__ == '__main__':
     regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
-    safe_makedirs(os.path.dirname(sys.argv[1]))
     open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/ic_reg_maps/gen_max2829_regs.py b/host/lib/ic_reg_maps/gen_max2829_regs.py
new file mode 100755
index 000000000..7fef302a8
--- /dev/null
+++ b/host/lib/ic_reg_maps/gen_max2829_regs.py
@@ -0,0 +1,166 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+from common import *
+
+########################################################################
+# Template for raw text data describing registers
+# name addr[bit range inclusive] default optional enums
+########################################################################
+REGS_DATA_TMPL="""\
+########################################################################
+## Note: offsets given from perspective of data bits (excludes address)
+########################################################################
+##
+########################################################################
+## Standby (2)
+########################################################################
+_set_to_1_2_0         2[0]          1
+_set_to_1_2_1         2[1]          1
+_set_to_1_2_2         2[2]          1
+pa_bias_dac           2[10]         0
+voltage_ref           2[11]         0
+_set_to_1_2_12        2[12]         1
+mimo_select           2[13]         0                 normal, mimo
+########################################################################
+## Integer Divider Ratio (3)
+########################################################################
+int_div_ratio_word    3[0:7]        a2
+frac_div_ratio_lsb    3[12:13]      0
+########################################################################
+## Fractional Divider Ratio (4)
+########################################################################
+frac_div_ratio_msb    4[0:13]       0
+########################################################################
+## Band Select and PLL (5)
+########################################################################
+band_select           5[0]          0                 2_4ghz, 5ghz
+ref_divider           5[1:3]        1
+pll_cp_select         5[5]          1                 2ma, 4ma
+band_select_802_11a   5[6]          0                 4_9ghz_to_5_35ghz, 5_47ghz_to_5_875ghz
+vco_bandswitch        5[7]          0                 disable, automatic
+vco_spi_bandswitch    5[8]          0                 fsm, spi
+vco_sub_band          5[9:10]       0
+_set_to_1_5_11        5[11]         1
+_set_to_1_5_12        5[12]         1
+band_sel_mimo         5[13]         0                 normal, mimo
+########################################################################
+## Calibration (6)
+########################################################################
+rx_cal_mode           6[0]          0                 dis, enb
+tx_cal_mode           6[1]          0                 dis, enb
+_set_to_1_6_10        6[10]         1
+iq_cal_gain           6[11:12]      3                 8db, 18db, 24db, 34db
+########################################################################
+## Lowpass Filter (7)
+########################################################################
+rx_lpf_fine_adj       7[0:2]        2                 90, 95, 100, 105, 110
+rx_lpf_coarse_adj     7[3:4]        1                 7_5mhz, 9_5mhz, 14mhz, 18mhz
+tx_lpf_coarse_adj     7[5:6]        1                 12mhz=1, 18mhz=2, 24mhz=3
+rssi_high_bw          7[11]         0                 2mhz, 6mhz
+########################################################################
+## Rx Control/RSSI (8)
+########################################################################
+_set_to_1_8_0         8[0]          1
+rx_highpass           8[2]          1                 100hz, 30khz
+_set_to_1_8_5         8[5]          1
+rssi_pin_fcn          8[8]          0                 rssi, temp
+rssi_op_mode          8[10]         0                 rssi_rxhp, enabled
+rssi_output_range     8[11]         0                 low, high
+rx_vga_gain_spi       8[12]         0                 io, spi
+########################################################################
+## Tx Linearity/Baseband Gain (9)
+########################################################################
+tx_baseband_gain      9[0:1]        0                 0db, 2db, 3_5db, 5db
+tx_upconv_linearity   9[2:3]        0                 50, 63, 78, 100
+tx_vga_linearity      9[6:7]        0                 50, 63, 78, 100
+pa_driver_linearity   9[8:9]        2                 50, 63, 78, 100
+tx_vga_gain_spi       9[10]         0                 io, spi
+########################################################################
+## PA Bias DAC (10)
+########################################################################
+pa_bias_dac_out_curr  a[0:5]        0
+pa_bias_dac_delay     a[6:9]        f
+########################################################################
+## Rx Gain (11)
+########################################################################
+rx_vga_gain           b[0:4]        1f
+rx_lna_gain           b[5:6]        3
+########################################################################
+## Tx VGA Gain (12)
+########################################################################
+tx_vga_gain           c[0:5]        0
+"""
+
+########################################################################
+# Header and Source templates below
+########################################################################
+HEADER_TEXT="""
+#import time
+
+/***********************************************************************
+ * This file was generated by $file on $time.strftime("%c")
+ **********************************************************************/
+
+\#ifndef INCLUDED_MAX2829_REGS_HPP
+\#define INCLUDED_MAX2829_REGS_HPP
+
+\#include <boost/cstdint.hpp>
+
+struct max2829_regs_t{
+#for $reg in $regs
+    #if $reg.get_enums()
+    enum $(reg.get_name())_t{
+        #for $i, $enum in enumerate($reg.get_enums())
+        #set $end_comma = ',' if $i < len($reg.get_enums())-1 else ''
+        $(reg.get_name().upper())_$(enum[0].upper()) = $enum[1]$end_comma
+        #end for
+    } $reg.get_name();
+    #else
+    boost::$reg.get_stdint_type() $reg.get_name();
+    #end if
+#end for
+
+    max2829_regs_t(void){
+#for $reg in $regs
+        $reg.get_name() = $reg.get_default();
+#end for
+    }
+
+    boost::uint32_t get_reg(boost::uint8_t addr){
+        boost::uint16_t reg = 0;
+        switch(addr){
+        #for $addr in range(2, 12+1)
+        case $addr:
+            #for $reg in filter(lambda r: r.get_addr() == addr, $regs)
+            reg |= (boost::uint16_t($reg.get_name()) & $reg.get_mask()) << $reg.get_shift();
+            #end for
+            break;
+        #end for
+        }
+        return (boost::uint32_t(reg) << 4) | (addr & 0xf);
+    }
+};
+
+\#endif /* INCLUDED_MAX2829_REGS_HPP */
+"""
+
+if __name__ == '__main__':
+    regs = map(reg, parse_tmpl(REGS_DATA_TMPL).splitlines())
+    open(sys.argv[1], 'w').write(parse_tmpl(HEADER_TEXT, regs=regs, file=__file__))
diff --git a/host/lib/transport/convert_types.cpp b/host/lib/transport/convert_types.cpp
index 2a6854f50..8c3d6b17a 100644
--- a/host/lib/transport/convert_types.cpp
+++ b/host/lib/transport/convert_types.cpp
@@ -19,6 +19,7 @@
 #include <uhd/utils/assert.hpp>
 #include <boost/asio.hpp> //endianness conversion
 #include <boost/cstdint.hpp>
+#include <complex>
 
 using namespace uhd;
 
@@ -109,7 +110,7 @@ void transport::convert_io_type_to_otw_type(
     size_t num_samps
 ){
     //all we handle for now:
-    ASSERT_THROW(otw_type.width == 16 and otw_type.byteorder == otw_type_t::BO_BIG_ENDIAN);
+    UHD_ASSERT_THROW(otw_type.width == 16 and otw_type.byteorder == otw_type_t::BO_BIG_ENDIAN);
 
     switch(io_type.tid){
     case io_type_t::COMPLEX_FLOAT32:
@@ -129,7 +130,7 @@ void transport::convert_otw_type_to_io_type(
     size_t num_samps
 ){
     //all we handle for now:
-    ASSERT_THROW(otw_type.width == 16 and otw_type.byteorder == otw_type_t::BO_BIG_ENDIAN);
+    UHD_ASSERT_THROW(otw_type.width == 16 and otw_type.byteorder == otw_type_t::BO_BIG_ENDIAN);
 
     switch(io_type.tid){
     case io_type_t::COMPLEX_FLOAT32:
diff --git a/host/lib/types.cpp b/host/lib/types.cpp
index 0fd2522cf..14f7651d4 100644
--- a/host/lib/types.cpp
+++ b/host/lib/types.cpp
@@ -25,11 +25,14 @@
 #include <uhd/types/mac_addr.hpp>
 #include <uhd/types/otw_type.hpp>
 #include <uhd/types/io_type.hpp>
+#include <uhd/types/serial.hpp>
 #include <boost/algorithm/string.hpp>
 #include <boost/math/special_functions/round.hpp>
 #include <boost/foreach.hpp>
 #include <boost/format.hpp>
 #include <boost/cstdint.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/thread.hpp>
 #include <stdexcept>
 #include <complex>
 
@@ -102,9 +105,9 @@ tx_metadata_t::tx_metadata_t(void){
 /***********************************************************************
  * time spec
  **********************************************************************/
-time_spec_t::time_spec_t(boost::uint32_t new_secs, double new_nsecs){
-    secs = new_secs;
-    nsecs = new_nsecs;
+time_spec_t::time_spec_t(boost::uint32_t secs_, double nsecs_){
+    secs = secs_;
+    nsecs = nsecs_;
 }
 
 boost::uint32_t time_spec_t::get_ticks(double tick_rate) const{
@@ -118,46 +121,44 @@ void time_spec_t::set_ticks(boost::uint32_t ticks, double tick_rate){
 /***********************************************************************
  * device addr
  **********************************************************************/
-std::string device_addr_t::to_string(void) const{
-    std::stringstream ss;
-    BOOST_FOREACH(std::string key, this->keys()){
-        ss << boost::format("%s: %s") % key % (*this)[key] << std::endl;
-    }
-    return ss.str();
-}
-
-static const std::string arg_delim = ";";
+static const std::string arg_delim = ",";
 static const std::string pair_delim = "=";
 
 static std::string trim(const std::string &in){
     return boost::algorithm::trim_copy(in);
 }
 
-std::string device_addr_t::to_args_str(void) const{
-    std::string args_str;
-    BOOST_FOREACH(const std::string &key, this->keys()){
-        args_str += key + pair_delim + (*this)[key] + arg_delim;
-    }
-    return args_str;
-}
-
-device_addr_t device_addr_t::from_args_str(const std::string &args_str){
-    device_addr_t addr;
-
+device_addr_t::device_addr_t(const std::string &args){
     //split the args at the semi-colons
     std::vector<std::string> pairs;
-    boost::split(pairs, args_str, boost::is_any_of(arg_delim));
+    boost::split(pairs, args, boost::is_any_of(arg_delim));
     BOOST_FOREACH(const std::string &pair, pairs){
         if (trim(pair) == "") continue;
 
         //split the key value pairs at the equals
         std::vector<std::string> key_val;
         boost::split(key_val, pair, boost::is_any_of(pair_delim));
-        if (key_val.size() != 2) throw std::runtime_error("invalid args string: "+args_str);
-        addr[trim(key_val[0])] = trim(key_val[1]);
+        if (key_val.size() != 2) throw std::runtime_error("invalid args string: "+args);
+        (*this)[trim(key_val[0])] = trim(key_val[1]);
     }
+}
+
+std::string device_addr_t::to_string(void) const{
+    if (this->size() == 0) return "Empty Device Address";
 
-    return addr;
+    std::stringstream ss;
+    BOOST_FOREACH(std::string key, this->keys()){
+        ss << boost::format("%s: %s") % key % (*this)[key] << std::endl;
+    }
+    return ss.str();
+}
+
+std::string device_addr_t::to_args_str(void) const{
+    std::string args_str;
+    BOOST_FOREACH(const std::string &key, this->keys()){
+        args_str += key + pair_delim + (*this)[key] + arg_delim;
+    }
+    return args_str;
 }
 
 /***********************************************************************
@@ -243,3 +244,38 @@ io_type_t::io_type_t(size_t size)
 : size(size), tid(CUSTOM_TYPE){
     /* NOP */
 }
+
+/***********************************************************************
+ * serial
+ **********************************************************************/
+spi_config_t::spi_config_t(edge_t edge){
+    mosi_edge = edge;
+    miso_edge = edge;
+}
+
+void i2c_iface::write_eeprom(
+    boost::uint8_t addr,
+    boost::uint8_t offset,
+    const byte_vector_t &bytes
+){
+    for (size_t i = 0; i < bytes.size(); i++){
+        //write a byte at a time, its easy that way
+        byte_vector_t cmd = boost::assign::list_of(offset+i)(bytes[i]);
+        this->write_i2c(addr, cmd);
+        boost::this_thread::sleep(boost::posix_time::milliseconds(10)); //worst case write
+    }
+}
+
+byte_vector_t i2c_iface::read_eeprom(
+    boost::uint8_t addr,
+    boost::uint8_t offset,
+    size_t num_bytes
+){
+    byte_vector_t bytes;
+    for (size_t i = 0; i < num_bytes; i++){
+        //do a zero byte write to start read cycle
+        this->write_i2c(addr, byte_vector_t(1, offset+i));
+        bytes.push_back(this->read_i2c(addr, 1).at(0));
+    }
+    return bytes;
+}
diff --git a/host/lib/usrp/dboard/db_basic_and_lf.cpp b/host/lib/usrp/dboard/db_basic_and_lf.cpp
index aad2398d8..b0fbbd2ec 100644
--- a/host/lib/usrp/dboard/db_basic_and_lf.cpp
+++ b/host/lib/usrp/dboard/db_basic_and_lf.cpp
@@ -153,6 +153,12 @@ void basic_rx::rx_get(const wax::obj &key_, wax::obj &val){
     case SUBDEV_PROP_USE_LO_OFFSET:
         val = false;
         return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = true; //there is no LO, so it must be true!
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -164,19 +170,17 @@ void basic_rx::rx_set(const wax::obj &key_, const wax::obj &val){
     switch(key.as<subdev_prop_t>()){
 
     case SUBDEV_PROP_GAIN:
-        ASSERT_THROW(val.as<float>() == float(0));
+        UHD_ASSERT_THROW(val.as<float>() == float(0));
         return;
 
     case SUBDEV_PROP_ANTENNA:
-        ASSERT_THROW(val.as<std::string>() == std::string(""));
+        UHD_ASSERT_THROW(val.as<std::string>() == std::string(""));
         return;
 
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
 
-    default: throw std::runtime_error(str(boost::format(
-            "Error: trying to set read-only property on %s subdev"
-        ) % dboard_id::to_string(get_rx_id())));
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
 
@@ -248,6 +252,12 @@ void basic_tx::tx_get(const wax::obj &key_, wax::obj &val){
     case SUBDEV_PROP_USE_LO_OFFSET:
         val = false;
         return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = true; //there is no LO, so it must be true!
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -259,18 +269,16 @@ void basic_tx::tx_set(const wax::obj &key_, const wax::obj &val){
     switch(key.as<subdev_prop_t>()){
 
     case SUBDEV_PROP_GAIN:
-        ASSERT_THROW(val.as<float>() == float(0));
+        UHD_ASSERT_THROW(val.as<float>() == float(0));
         return;
 
     case SUBDEV_PROP_ANTENNA:
-        ASSERT_THROW(val.as<std::string>() == std::string(""));
+        UHD_ASSERT_THROW(val.as<std::string>() == std::string(""));
         return;
 
     case SUBDEV_PROP_FREQ:
         return; // it wont do you much good, but you can set it
 
-    default: throw std::runtime_error(str(boost::format(
-            "Error: trying to set read-only property on %s subdev"
-        ) % dboard_id::to_string(get_tx_id())));
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
diff --git a/host/lib/usrp/dboard/db_rfx.cpp b/host/lib/usrp/dboard/db_rfx.cpp
index cd5b8447b..175f55eab 100644
--- a/host/lib/usrp/dboard/db_rfx.cpp
+++ b/host/lib/usrp/dboard/db_rfx.cpp
@@ -94,6 +94,15 @@ private:
      * \return the actual frequency in Hz
      */
     double set_lo_freq(dboard_iface::unit_t unit, double target_freq);
+
+    /*!
+     * Get the lock detect status of the LO.
+     * \param unit which unit rx or tx
+     * \return true for locked
+     */
+    bool get_locked(dboard_iface::unit_t unit){
+        return (this->get_iface()->read_gpio(unit) & LOCKDET_MASK) != 0;
+    }
 };
 
 /***********************************************************************
@@ -192,7 +201,7 @@ void rfx_xcvr::set_tx_lo_freq(double freq){
 
 void rfx_xcvr::set_rx_ant(const std::string &ant){
     //validate input
-    ASSERT_THROW(ant == "TX/RX" or ant == "RX2");
+    UHD_ASSERT_THROW(ant == "TX/RX" or ant == "RX2");
 
     //set the rx atr regs that change with antenna setting
     this->get_iface()->set_atr_reg(
@@ -350,12 +359,12 @@ void rfx_xcvr::rx_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case SUBDEV_PROP_GAIN:
-        ASSERT_THROW(name == "PGA0");
+        UHD_ASSERT_THROW(name == "PGA0");
         val = _rx_pga0_gain;
         return;
 
     case SUBDEV_PROP_GAIN_RANGE:
-        ASSERT_THROW(name == "PGA0");
+        UHD_ASSERT_THROW(name == "PGA0");
         val = gain_range_t(0, _max_rx_pga0_gain, float(0.022));
         return;
 
@@ -396,6 +405,12 @@ void rfx_xcvr::rx_get(const wax::obj &key_, wax::obj &val){
     case SUBDEV_PROP_USE_LO_OFFSET:
         val = false;
         return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = this->get_locked(dboard_iface::UNIT_RX);
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -411,7 +426,7 @@ void rfx_xcvr::rx_set(const wax::obj &key_, const wax::obj &val){
         return;
 
     case SUBDEV_PROP_GAIN:
-        ASSERT_THROW(name == "PGA0");
+        UHD_ASSERT_THROW(name == "PGA0");
         set_rx_pga0_gain(val.as<float>());
         return;
 
@@ -419,10 +434,7 @@ void rfx_xcvr::rx_set(const wax::obj &key_, const wax::obj &val){
         set_rx_ant(val.as<std::string>());
         return;
 
-    default:
-        throw std::runtime_error(str(boost::format(
-            "Error: trying to set read-only property on %s subdev"
-        ) % dboard_id::to_string(get_rx_id())));
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
 
@@ -430,7 +442,7 @@ void rfx_xcvr::rx_set(const wax::obj &key_, const wax::obj &val){
  * TX Get and Set
  **********************************************************************/
 void rfx_xcvr::tx_get(const wax::obj &key_, wax::obj &val){
-        wax::obj key; std::string name;
+    wax::obj key; std::string name;
     boost::tie(key, name) = extract_named_prop(key_);
 
     //handle the get request conditioned on the key
@@ -486,6 +498,12 @@ void rfx_xcvr::tx_get(const wax::obj &key_, wax::obj &val){
     case SUBDEV_PROP_USE_LO_OFFSET:
         val = true;
         return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = this->get_locked(dboard_iface::UNIT_TX);
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -506,12 +524,9 @@ void rfx_xcvr::tx_set(const wax::obj &key_, const wax::obj &val){
 
     case SUBDEV_PROP_ANTENNA:
         //its always set to tx/rx, so we only allow this value
-        ASSERT_THROW(val.as<std::string>() == "TX/RX");
+        UHD_ASSERT_THROW(val.as<std::string>() == "TX/RX");
         return;
 
-    default:
-        throw std::runtime_error(str(boost::format(
-            "Error: trying to set read-only property on %s subdev"
-        ) % dboard_id::to_string(get_tx_id())));
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
diff --git a/host/lib/usrp/dboard/db_xcvr2450.cpp b/host/lib/usrp/dboard/db_xcvr2450.cpp
new file mode 100644
index 000000000..0dfef2a0a
--- /dev/null
+++ b/host/lib/usrp/dboard/db_xcvr2450.cpp
@@ -0,0 +1,627 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+// TX IO Pins
+#define HB_PA_OFF_TXIO      (1 << 15)    // 5GHz PA, 1 = off, 0 = on
+#define LB_PA_OFF_TXIO      (1 << 14)    // 2.4GHz PA, 1 = off, 0 = on
+#define ANTSEL_TX1_RX2_TXIO (1 << 13)    // 1 = Ant 1 to TX, Ant 2 to RX
+#define ANTSEL_TX2_RX1_TXIO (1 << 12)    // 1 = Ant 2 to TX, Ant 1 to RX
+#define TX_EN_TXIO          (1 << 11)    // 1 = TX on, 0 = TX off
+#define AD9515DIV_TXIO      (1 << 4)     // 1 = Div  by 3, 0 = Div by 2
+
+#define TXIO_MASK (HB_PA_OFF_TXIO | LB_PA_OFF_TXIO | ANTSEL_TX1_RX2_TXIO | ANTSEL_TX2_RX1_TXIO | TX_EN_TXIO | AD9515DIV_TXIO)
+
+// TX IO Functions
+#define HB_PA_TXIO               LB_PA_OFF_TXIO
+#define LB_PA_TXIO               HB_PA_OFF_TXIO
+#define TX_ENB_TXIO              TX_EN_TXIO
+#define TX_DIS_TXIO              0
+#define AD9515DIV_3_TXIO         AD9515DIV_TXIO
+#define AD9515DIV_2_TXIO         0
+
+// RX IO Pins
+#define LOCKDET_RXIO (1 << 15)           // This is an INPUT!!!
+#define POWER_RXIO   (1 << 14)           // 1 = power on, 0 = shutdown
+#define RX_EN_RXIO   (1 << 13)           // 1 = RX on, 0 = RX off
+#define RX_HP_RXIO   (1 << 12)           // 0 = Fc set by rx_hpf, 1 = 600 KHz
+
+#define RXIO_MASK (POWER_RXIO | RX_EN_RXIO | RX_HP_RXIO)
+
+// RX IO Functions
+#define POWER_UP_RXIO            POWER_RXIO
+#define POWER_DOWN_RXIO          0
+#define RX_ENB_RXIO              RX_EN_RXIO
+#define RX_DIS_RXIO              0
+
+#include "max2829_regs.hpp"
+#include <uhd/utils/static.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/types/ranges.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <uhd/usrp/dboard_base.hpp>
+#include <uhd/usrp/dboard_manager.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <boost/math/special_functions/round.hpp>
+#include <utility>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace boost::assign;
+
+/***********************************************************************
+ * The XCVR 2450 constants
+ **********************************************************************/
+static const bool xcvr2450_debug = false;
+
+static const freq_range_t xcvr_freq_range(2.4e9, 6.0e9);
+
+static const prop_names_t xcvr_antennas = list_of("J1")("J2");
+
+static const uhd::dict<std::string, gain_range_t> xcvr_tx_gain_ranges = map_list_of
+    ("VGA", gain_range_t(0, 30, 0.5))
+    ("BB", gain_range_t(0, 5, 1.5))
+;
+static const uhd::dict<std::string, gain_range_t> xcvr_rx_gain_ranges = map_list_of
+    ("LNA", gain_range_t(0, 30.5, 15))
+    ("VGA", gain_range_t(0, 62, 2.0))
+;
+
+/***********************************************************************
+ * The XCVR 2450 dboard class
+ **********************************************************************/
+class xcvr2450 : public xcvr_dboard_base{
+public:
+    xcvr2450(ctor_args_t const& args);
+    ~xcvr2450(void);
+
+    void rx_get(const wax::obj &key, wax::obj &val);
+    void rx_set(const wax::obj &key, const wax::obj &val);
+
+    void tx_get(const wax::obj &key, wax::obj &val);
+    void tx_set(const wax::obj &key, const wax::obj &val);
+
+private:
+    double _lo_freq;
+    uhd::dict<std::string, float> _tx_gains, _rx_gains;
+    std::string _tx_ant, _rx_ant;
+    int _ad9515div;
+    max2829_regs_t _max2829_regs;
+
+    void set_lo_freq(double target_freq);
+    void set_tx_ant(const std::string &ant);
+    void set_rx_ant(const std::string &ant);
+    void set_tx_gain(float gain, const std::string &name);
+    void set_rx_gain(float gain, const std::string &name);
+
+    void update_atr(void);
+    void spi_reset(void);
+    void send_reg(boost::uint8_t addr){
+        boost::uint32_t value = _max2829_regs.get_reg(addr);
+        if(xcvr2450_debug) std::cerr << boost::format(
+            "XCVR2450: send reg 0x%02x, value 0x%05x"
+        ) % int(addr) % value << std::endl;
+        this->get_iface()->write_spi(
+            dboard_iface::UNIT_RX,
+            spi_config_t::EDGE_RISE,
+            value, 24
+        );
+    }
+
+    static bool is_highband(double freq){return freq > 3e9;}
+
+    /*!
+     * Is the LO locked?
+     * \return true for locked
+     */
+    bool get_locked(void){
+        return (this->get_iface()->read_gpio(dboard_iface::UNIT_RX) & LOCKDET_RXIO) != 0;
+    }
+
+    /*!
+     * Read the RSSI from the aux adc
+     * \return the rssi in dB
+     */
+    float get_rssi(void){
+        //constants for the rssi calculation
+        static const float min_v = float(0.5), max_v = float(2.5);
+        static const float rssi_dyn_range = 60;
+        //calculate the rssi from the voltage
+        float voltage = this->get_iface()->read_aux_adc(dboard_iface::UNIT_RX, 1);
+        return rssi_dyn_range*(voltage - min_v)/(max_v - min_v);
+    }
+};
+
+/***********************************************************************
+ * Register the XCVR 2450 dboard
+ **********************************************************************/
+static dboard_base::sptr make_xcvr2450(dboard_base::ctor_args_t const& args){
+    return dboard_base::sptr(new xcvr2450(args));
+}
+
+UHD_STATIC_BLOCK(reg_xcvr2450_dboard){
+    //register the factory function for the rx and tx dbids
+    dboard_manager::register_dboard(0x0060, &make_xcvr2450, "XCVR2450 TX");
+    dboard_manager::register_dboard(0x0061, &make_xcvr2450, "XCVR2450 RX");
+}
+
+/***********************************************************************
+ * Structors
+ **********************************************************************/
+xcvr2450::xcvr2450(ctor_args_t const& args) : xcvr_dboard_base(args){
+    //enable only the clocks we need
+    this->get_iface()->set_clock_enabled(dboard_iface::UNIT_TX, true);
+
+    //set the gpio directions
+    this->get_iface()->set_gpio_ddr(dboard_iface::UNIT_TX, TXIO_MASK);
+    this->get_iface()->set_gpio_ddr(dboard_iface::UNIT_RX, RXIO_MASK);
+
+    spi_reset(); //prepare the spi
+
+    //setup the misc max2829 registers
+    _max2829_regs.mimo_select         = max2829_regs_t::MIMO_SELECT_MIMO;
+    _max2829_regs.band_sel_mimo       = max2829_regs_t::BAND_SEL_MIMO_MIMO;
+    _max2829_regs.pll_cp_select       = max2829_regs_t::PLL_CP_SELECT_4MA;
+    _max2829_regs.rssi_high_bw        = max2829_regs_t::RSSI_HIGH_BW_6MHZ;
+    _max2829_regs.tx_lpf_coarse_adj   = max2829_regs_t::TX_LPF_COARSE_ADJ_12MHZ;
+    _max2829_regs.rx_lpf_coarse_adj   = max2829_regs_t::RX_LPF_COARSE_ADJ_9_5MHZ;
+    _max2829_regs.rx_lpf_fine_adj     = max2829_regs_t::RX_LPF_FINE_ADJ_95;
+    _max2829_regs.rx_vga_gain_spi     = max2829_regs_t::RX_VGA_GAIN_SPI_SPI;
+    _max2829_regs.rssi_output_range   = max2829_regs_t::RSSI_OUTPUT_RANGE_HIGH;
+    _max2829_regs.rssi_op_mode        = max2829_regs_t::RSSI_OP_MODE_ENABLED;
+    _max2829_regs.rssi_pin_fcn        = max2829_regs_t::RSSI_PIN_FCN_RSSI;
+    _max2829_regs.rx_highpass         = max2829_regs_t::RX_HIGHPASS_100HZ;
+    _max2829_regs.tx_vga_gain_spi     = max2829_regs_t::TX_VGA_GAIN_SPI_SPI;
+    _max2829_regs.pa_driver_linearity = max2829_regs_t::PA_DRIVER_LINEARITY_78;
+    _max2829_regs.tx_vga_linearity    = max2829_regs_t::TX_VGA_LINEARITY_78;
+    _max2829_regs.tx_upconv_linearity = max2829_regs_t::TX_UPCONV_LINEARITY_78;
+
+    //send initial register settings
+    for(boost::uint8_t reg = 0x2; reg <= 0xC; reg++){
+        this->send_reg(reg);
+    }
+
+    //set defaults for LO, gains, antennas
+    set_lo_freq(2.45e9);
+    set_rx_ant(xcvr_antennas.at(0));
+    set_tx_ant(xcvr_antennas.at(1));
+    BOOST_FOREACH(const std::string &name, xcvr_tx_gain_ranges.keys()){
+        set_tx_gain(xcvr_tx_gain_ranges[name].min, name);
+    }
+    BOOST_FOREACH(const std::string &name, xcvr_rx_gain_ranges.keys()){
+        set_rx_gain(xcvr_rx_gain_ranges[name].min, name);
+    }
+}
+
+xcvr2450::~xcvr2450(void){
+    spi_reset();
+}
+
+void xcvr2450::spi_reset(void){
+    //spi reset mode: global enable = off, tx and rx enable = on
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE, TX_ENB_TXIO);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE, RX_ENB_RXIO | POWER_DOWN_RXIO);
+    boost::this_thread::sleep(boost::posix_time::milliseconds(10));
+
+    //take it back out of spi reset mode and wait a bit
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE, RX_DIS_RXIO | POWER_UP_RXIO);
+    boost::this_thread::sleep(boost::posix_time::milliseconds(10));
+}
+
+void xcvr2450::update_atr(void){
+    //calculate tx atr pins
+    int band_sel   = (xcvr2450::is_highband(_lo_freq))? HB_PA_TXIO : LB_PA_TXIO;
+    int tx_ant_sel = (_tx_ant == "J1")? ANTSEL_TX1_RX2_TXIO : ANTSEL_TX2_RX1_TXIO;
+    int rx_ant_sel = (_rx_ant == "J2")? ANTSEL_TX1_RX2_TXIO : ANTSEL_TX2_RX1_TXIO;
+    int xx_ant_sel = tx_ant_sel; //prefer the tx antenna selection for full duplex (rx will get the other antenna)
+    int ad9515div  = (_ad9515div == 3)? AD9515DIV_3_TXIO : AD9515DIV_2_TXIO;
+
+    //set the tx registers
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE,        band_sel | ad9515div | TX_DIS_TXIO);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_RX_ONLY,     band_sel | ad9515div | TX_DIS_TXIO | rx_ant_sel);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_TX_ONLY,     band_sel | ad9515div | TX_ENB_TXIO | tx_ant_sel);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_FULL_DUPLEX, band_sel | ad9515div | TX_ENB_TXIO | xx_ant_sel);
+
+    //set the rx registers
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE,        POWER_UP_RXIO | RX_DIS_RXIO);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_RX_ONLY,     POWER_UP_RXIO | RX_ENB_RXIO);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     POWER_UP_RXIO | RX_DIS_RXIO);
+    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, POWER_UP_RXIO | RX_ENB_RXIO);
+}
+
+/***********************************************************************
+ * Tuning
+ **********************************************************************/
+void xcvr2450::set_lo_freq(double target_freq){
+    target_freq = std::clip(target_freq, xcvr_freq_range.min, xcvr_freq_range.max);
+    //TODO: clip for highband and lowband
+
+    //variables used in the calculation below
+    double scaler = xcvr2450::is_highband(target_freq)? (4.0/5.0) : (4.0/3.0);
+    double ref_freq = this->get_iface()->get_clock_rate(dboard_iface::UNIT_TX);
+    int R, intdiv, fracdiv;
+
+    //loop through values until we get a match
+    for(_ad9515div = 2; _ad9515div <= 3; _ad9515div++){
+        for(R = 1; R <= 7; R++){
+            double N = (target_freq*scaler*R*_ad9515div)/ref_freq;
+            intdiv = int(std::floor(N));
+            fracdiv = boost::math::iround((N - intdiv)*double(1 << 16));
+            //actual minimum is 128, but most chips seems to require higher to lock
+            if (intdiv < 131 or intdiv > 255) continue;
+            //constraints met: exit loop
+            goto done_loop;
+        }
+    } done_loop:
+
+    //calculate the actual freq from the values above
+    double N = double(intdiv) + double(fracdiv)/double(1 << 16);
+    _lo_freq = (N*ref_freq)/(scaler*R*_ad9515div);
+
+    if (xcvr2450_debug) std::cerr
+        << boost::format("XCVR2450 tune:\n")
+        << boost::format("    R=%d, N=%f, ad9515=%d, scaler=%f\n") % R % N % _ad9515div % scaler
+        << boost::format("    Ref    Freq=%fMHz\n") % (ref_freq/1e6)
+        << boost::format("    Target Freq=%fMHz\n") % (target_freq/1e6)
+        << boost::format("    Actual Freq=%fMHz\n") % (_lo_freq/1e6)
+        << std::endl;
+
+    //high-high band or low-high band?
+    if(_lo_freq > (5.35e9 + 5.47e9)/2.0){
+        if (xcvr2450_debug) std::cerr << "XCVR2450 tune: Using  high-high band" << std::endl;
+        _max2829_regs.band_select_802_11a = max2829_regs_t::BAND_SELECT_802_11A_5_47GHZ_TO_5_875GHZ;
+    }else{
+        if (xcvr2450_debug) std::cerr << "XCVR2450 tune: Using  low-high band" << std::endl;
+        _max2829_regs.band_select_802_11a = max2829_regs_t::BAND_SELECT_802_11A_4_9GHZ_TO_5_35GHZ;
+    }
+
+    //new band select settings and ad9515 divider
+    this->update_atr();
+
+    //load new counters into registers
+    _max2829_regs.int_div_ratio_word = intdiv;
+    _max2829_regs.frac_div_ratio_lsb = fracdiv & 0x3;
+    _max2829_regs.frac_div_ratio_msb = fracdiv >> 2;
+    this->send_reg(0x3); //integer
+    this->send_reg(0x4); //fractional
+
+    //load the reference divider and band select into registers
+    //toggle the bandswitch from off to automatic (which really means start)
+    _max2829_regs.ref_divider = R;
+    _max2829_regs.band_select = (xcvr2450::is_highband(_lo_freq))?
+                                max2829_regs_t::BAND_SELECT_5GHZ   :
+                                max2829_regs_t::BAND_SELECT_2_4GHZ ;
+    _max2829_regs.vco_bandswitch = max2829_regs_t::VCO_BANDSWITCH_DISABLE;
+    this->send_reg(0x5);
+    _max2829_regs.vco_bandswitch = max2829_regs_t::VCO_BANDSWITCH_AUTOMATIC;;
+    this->send_reg(0x5);
+}
+
+/***********************************************************************
+ * Antenna Handling
+ **********************************************************************/
+void xcvr2450::set_tx_ant(const std::string &ant){
+    assert_has(xcvr_antennas, ant, "xcvr antenna name");
+   _tx_ant = ant;
+    this->update_atr(); //sets the atr to the new antenna setting
+}
+
+void xcvr2450::set_rx_ant(const std::string &ant){
+    assert_has(xcvr_antennas, ant, "xcvr antenna name");
+    _rx_ant = ant;
+    this->update_atr(); //sets the atr to the new antenna setting
+}
+
+/***********************************************************************
+ * Gain Handling
+ **********************************************************************/
+/*!
+ * Convert a requested gain for the tx vga into the integer register value.
+ * The gain passed into the function will be set to the actual value.
+ * \param gain the requested gain in dB
+ * \return 6 bit the register value
+ */
+static int gain_to_tx_vga_reg(float &gain){
+    //calculate the register value
+    int reg = std::clip(boost::math::iround(gain*60/30.0) + 3, 0, 63);
+
+    //calculate the actual gain value
+    if (reg < 4)       gain = 0;
+    else if (reg < 48) gain = float(reg/2 - 1);
+    else               gain = float(reg/2.0 - 1.5);
+
+    //return register value
+    return reg;
+}
+
+/*!
+ * Convert a requested gain for the tx bb into the integer register value.
+ * The gain passed into the function will be set to the actual value.
+ * \param gain the requested gain in dB
+ * \return gain enum value
+ */
+static max2829_regs_t::tx_baseband_gain_t gain_to_tx_bb_reg(float &gain){
+    int reg = std::clip(boost::math::iround(gain*3/5.0), 0, 3);
+    switch(reg){
+    case 0:
+        gain = 0;
+        return max2829_regs_t::TX_BASEBAND_GAIN_0DB;
+    case 1:
+        gain = 2;
+        return max2829_regs_t::TX_BASEBAND_GAIN_2DB;
+    case 2:
+        gain = 3.5;
+        return max2829_regs_t::TX_BASEBAND_GAIN_3_5DB;
+    case 3:
+        gain = 5;
+        return max2829_regs_t::TX_BASEBAND_GAIN_5DB;
+    }
+    BOOST_THROW_EXCEPTION(std::runtime_error("should not get here"));
+    return max2829_regs_t::TX_BASEBAND_GAIN_0DB;
+}
+
+/*!
+ * Convert a requested gain for the rx vga into the integer register value.
+ * The gain passed into the function will be set to the actual value.
+ * \param gain the requested gain in dB
+ * \return 5 bit the register value
+ */
+static int gain_to_rx_vga_reg(float &gain){
+    int reg = std::clip(boost::math::iround(gain/2.0), 0, 31);
+    gain = float(reg*2);
+    return reg;
+}
+
+/*!
+ * Convert a requested gain for the rx lna into the integer register value.
+ * The gain passed into the function will be set to the actual value.
+ * \param gain the requested gain in dB
+ * \return 2 bit the register value
+ */
+static int gain_to_rx_lna_reg(float &gain){
+    int reg = std::clip(boost::math::iround(gain*2/30.5) + 1, 0, 3);
+    switch(reg){
+    case 0:
+    case 1: gain = 0;    break;
+    case 2: gain = 15;   break;
+    case 3: gain = 30.5; break;
+    }
+    return reg;
+}
+
+void xcvr2450::set_tx_gain(float gain, const std::string &name){
+    assert_has(xcvr_tx_gain_ranges.keys(), name, "xcvr tx gain name");
+    if (name == "VGA"){
+        _max2829_regs.tx_vga_gain = gain_to_tx_vga_reg(gain);
+        send_reg(0xC);
+    }
+    else if(name == "BB"){
+        _max2829_regs.tx_baseband_gain = gain_to_tx_bb_reg(gain);
+        send_reg(0x9);
+    }
+    else UHD_ASSERT_THROW(false);
+    _tx_gains[name] = gain;
+}
+
+void xcvr2450::set_rx_gain(float gain, const std::string &name){
+    assert_has(xcvr_rx_gain_ranges.keys(), name, "xcvr rx gain name");
+    if (name == "VGA"){
+        _max2829_regs.rx_vga_gain = gain_to_rx_vga_reg(gain);
+        send_reg(0xB);
+    }
+    else if(name == "LNA"){
+        _max2829_regs.rx_lna_gain = gain_to_rx_lna_reg(gain);
+        send_reg(0xB);
+    }
+    else UHD_ASSERT_THROW(false);
+    _rx_gains[name] = gain;
+}
+
+/***********************************************************************
+ * RX Get and Set
+ **********************************************************************/
+void xcvr2450::rx_get(const wax::obj &key_, wax::obj &val){
+    wax::obj key; std::string name;
+    boost::tie(key, name) = extract_named_prop(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+    case SUBDEV_PROP_NAME:
+        val = dboard_id::to_string(get_rx_id());
+        return;
+
+    case SUBDEV_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        assert_has(_rx_gains.keys(), name, "xcvr rx gain name");
+        val = _rx_gains[name];
+        return;
+
+    case SUBDEV_PROP_GAIN_RANGE:
+        assert_has(xcvr_rx_gain_ranges.keys(), name, "xcvr rx gain name");
+        val = xcvr_rx_gain_ranges[name];
+        return;
+
+    case SUBDEV_PROP_GAIN_NAMES:
+        val = prop_names_t(xcvr_rx_gain_ranges.keys());
+        return;
+
+    case SUBDEV_PROP_FREQ:
+        val = _lo_freq;
+        return;
+
+    case SUBDEV_PROP_FREQ_RANGE:
+        val = xcvr_freq_range;
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        val = _rx_ant;
+        return;
+
+    case SUBDEV_PROP_ANTENNA_NAMES:
+        val = xcvr_antennas;
+        return;
+
+    case SUBDEV_PROP_QUADRATURE:
+        val = true;
+        return;
+
+    case SUBDEV_PROP_IQ_SWAPPED:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_SPECTRUM_INVERTED:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = this->get_locked();
+        return;
+
+    case SUBDEV_PROP_RSSI:
+        val = this->get_rssi();
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+void xcvr2450::rx_set(const wax::obj &key_, const wax::obj &val){
+    wax::obj key; std::string name;
+    boost::tie(key, name) = extract_named_prop(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+
+    case SUBDEV_PROP_FREQ:
+        this->set_lo_freq(val.as<double>());
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        this->set_rx_gain(val.as<float>(), name);
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        this->set_rx_ant(val.as<std::string>());
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * TX Get and Set
+ **********************************************************************/
+void xcvr2450::tx_get(const wax::obj &key_, wax::obj &val){
+    wax::obj key; std::string name;
+    boost::tie(key, name) = extract_named_prop(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+    case SUBDEV_PROP_NAME:
+        val = dboard_id::to_string(get_tx_id());
+        return;
+
+    case SUBDEV_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        assert_has(_tx_gains.keys(), name, "xcvr tx gain name");
+        val = _tx_gains[name];
+        return;
+
+    case SUBDEV_PROP_GAIN_RANGE:
+        assert_has(xcvr_tx_gain_ranges.keys(), name, "xcvr tx gain name");
+        val = xcvr_tx_gain_ranges[name];
+        return;
+
+    case SUBDEV_PROP_GAIN_NAMES:
+        val = prop_names_t(xcvr_tx_gain_ranges.keys());
+        return;
+
+    case SUBDEV_PROP_FREQ:
+        val = _lo_freq;
+        return;
+
+    case SUBDEV_PROP_FREQ_RANGE:
+        val = xcvr_freq_range;
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        val = _tx_ant;
+        return;
+
+    case SUBDEV_PROP_ANTENNA_NAMES:
+        val = xcvr_antennas;
+        return;
+
+    case SUBDEV_PROP_QUADRATURE:
+        val = true;
+        return;
+
+    case SUBDEV_PROP_IQ_SWAPPED:
+        val = true;
+        return;
+
+    case SUBDEV_PROP_SPECTRUM_INVERTED:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_LO_LOCKED:
+        val = this->get_locked();
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+void xcvr2450::tx_set(const wax::obj &key_, const wax::obj &val){
+    wax::obj key; std::string name;
+    boost::tie(key, name) = extract_named_prop(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+
+    case SUBDEV_PROP_FREQ:
+        set_lo_freq(val.as<double>());
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        this->set_tx_gain(val.as<float>(), name);
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        this->set_tx_ant(val.as<std::string>());
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
diff --git a/host/lib/usrp/dboard_eeprom.cpp b/host/lib/usrp/dboard_eeprom.cpp
new file mode 100644
index 000000000..54e7a4fd9
--- /dev/null
+++ b/host/lib/usrp/dboard_eeprom.cpp
@@ -0,0 +1,102 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/usrp/dboard_eeprom.hpp>
+#include <uhd/utils/assert.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+static const bool _dboard_eeprom_debug = false;
+
+////////////////////////////////////////////////////////////////////////
+// format of daughterboard EEPROM
+// 00: 0xDB code for ``I'm a daughterboard''
+// 01:   .. Daughterboard ID (LSB)
+// 02:   .. Daughterboard ID (MSB)
+// 03:   .. io bits  7-0 direction (bit set if it's an output from m'board)
+// 04:   .. io bits 15-8 direction (bit set if it's an output from m'board)
+// 05:   .. ADC0 DC offset correction (LSB)
+// 06:   .. ADC0 DC offset correction (MSB)
+// 07:   .. ADC1 DC offset correction (LSB)
+// 08:   .. ADC1 DC offset correction (MSB)
+//  ...
+// 1f:   .. negative of the sum of bytes [0x00, 0x1e]
+
+#define DB_EEPROM_MAGIC         0x00
+#define DB_EEPROM_MAGIC_VALUE   0xDB
+#define DB_EEPROM_ID_LSB        0x01
+#define DB_EEPROM_ID_MSB        0x02
+#define DB_EEPROM_OE_LSB        0x03
+#define DB_EEPROM_OE_MSB        0x04
+#define DB_EEPROM_OFFSET_0_LSB  0x05 // offset correction for ADC or DAC 0
+#define DB_EEPROM_OFFSET_0_MSB  0x06
+#define DB_EEPROM_OFFSET_1_LSB  0x07 // offset correction for ADC or DAC 1
+#define DB_EEPROM_OFFSET_1_MSB  0x08
+#define DB_EEPROM_CHKSUM        0x1f
+
+#define DB_EEPROM_CLEN          0x20 // length of common portion of eeprom
+
+#define DB_EEPROM_CUSTOM_BASE   DB_EEPROM_CLEN // first avail offset for
+                                               //   daughterboard specific use
+////////////////////////////////////////////////////////////////////////
+
+//negative sum of bytes excluding checksum byte
+static boost::uint8_t checksum(const byte_vector_t &bytes){
+    int sum = 0;
+    for (size_t i = 0; i < std::min(bytes.size(), size_t(DB_EEPROM_CHKSUM)); i++){
+        sum -= int(bytes.at(i));
+    }
+    if (_dboard_eeprom_debug)
+        std::cout << boost::format("sum: 0x%02x") % sum << std::endl;
+    return boost::uint8_t(sum);
+}
+
+dboard_eeprom_t::dboard_eeprom_t(const byte_vector_t &bytes){
+    if (_dboard_eeprom_debug){
+        for (size_t i = 0; i < bytes.size(); i++){
+            std::cout << boost::format(
+                "eeprom byte[0x%02x] = 0x%02x") % i % int(bytes.at(i)
+            ) << std::endl;
+        }
+    }
+    try{
+        UHD_ASSERT_THROW(bytes.size() >= DB_EEPROM_CLEN);
+        UHD_ASSERT_THROW(bytes[DB_EEPROM_MAGIC] == DB_EEPROM_MAGIC_VALUE);
+        UHD_ASSERT_THROW(bytes[DB_EEPROM_CHKSUM] == checksum(bytes));
+        id = \
+            (boost::uint16_t(bytes[DB_EEPROM_ID_LSB]) << 0) |
+            (boost::uint16_t(bytes[DB_EEPROM_ID_MSB]) << 8) ;
+    }catch(const uhd::assert_error &){
+        id = dboard_id::NONE;
+    }
+}
+
+byte_vector_t dboard_eeprom_t::get_eeprom_bytes(void){
+    byte_vector_t bytes(DB_EEPROM_CLEN, 0); //defaults to all zeros
+    bytes[DB_EEPROM_MAGIC] = DB_EEPROM_MAGIC_VALUE;
+    bytes[DB_EEPROM_ID_LSB] = boost::uint8_t(id >> 0);
+    bytes[DB_EEPROM_ID_MSB] = boost::uint8_t(id >> 8);
+    bytes[DB_EEPROM_CHKSUM] = checksum(bytes);
+    return bytes;
+}
+
+size_t dboard_eeprom_t::num_bytes(void){
+    return DB_EEPROM_CLEN;
+}
diff --git a/host/lib/usrp/dboard_manager.cpp b/host/lib/usrp/dboard_manager.cpp
index 06f8c55b6..390c1d3c9 100644
--- a/host/lib/usrp/dboard_manager.cpp
+++ b/host/lib/usrp/dboard_manager.cpp
@@ -177,10 +177,11 @@ static args_t get_dboard_args(
 
     //verify that there is a registered constructor for this id
     if (not get_id_to_args_map().has_key(dboard_id)){
-        throw std::runtime_error(str(
+        /*throw std::runtime_error(str(
             boost::format("Unregistered %s dboard id: %s")
             % xx_type % dboard_id::to_string(dboard_id)
-        ));
+        ));*/
+        return get_dboard_args(dboard_id::NONE, xx_type);
     }
 
     //return the dboard args for this id
@@ -205,7 +206,7 @@ dboard_manager_impl::dboard_manager_impl(
 
     //make xcvr subdevs (make one subdev for both rx and tx dboards)
     if (rx_dboard_ctor == tx_dboard_ctor){
-        ASSERT_THROW(rx_subdevs == tx_subdevs);
+        UHD_ASSERT_THROW(rx_subdevs == tx_subdevs);
         BOOST_FOREACH(const std::string &subdev, rx_subdevs){
             dboard_base::sptr xcvr_dboard = rx_dboard_ctor(
                 dboard_base::ctor_args_t(subdev, iface, rx_dboard_id, tx_dboard_id)
diff --git a/host/lib/usrp/simple_usrp.cpp b/host/lib/usrp/simple_usrp.cpp
index 11ee3a798..a8c104485 100644
--- a/host/lib/usrp/simple_usrp.cpp
+++ b/host/lib/usrp/simple_usrp.cpp
@@ -42,14 +42,14 @@ public:
         _tx_dsp = _mboard[MBOARD_PROP_TX_DSP];
 
         //extract rx subdevice
-        wax::obj rx_dboard = _mboard[MBOARD_PROP_RX_DBOARD];
-        std::string rx_subdev_in_use = rx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
-        _rx_subdev = rx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, rx_subdev_in_use)];
+        _rx_dboard = _mboard[MBOARD_PROP_RX_DBOARD];
+        std::string rx_subdev_in_use = _rx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
+        _rx_subdev = _rx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, rx_subdev_in_use)];
 
         //extract tx subdevice
-        wax::obj tx_dboard = _mboard[MBOARD_PROP_TX_DBOARD];
-        std::string tx_subdev_in_use = tx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
-        _tx_subdev = tx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, tx_subdev_in_use)];
+        _tx_dboard = _mboard[MBOARD_PROP_TX_DBOARD];
+        std::string tx_subdev_in_use = _tx_dboard[DBOARD_PROP_USED_SUBDEVS].as<prop_names_t>().at(0);
+        _tx_subdev = _tx_dboard[named_prop_t(DBOARD_PROP_SUBDEV, tx_subdev_in_use)];
     }
 
     ~simple_usrp_impl(void){
@@ -61,7 +61,26 @@ public:
     }
 
     std::string get_name(void){
-        return _mboard[MBOARD_PROP_NAME].as<std::string>();
+        return str(boost::format(
+            "Simple USRP:\n"
+            "  Device: %s\n"
+            "  Mboard: %s\n"
+            "  RX DSP: %s\n"
+            "  RX Dboard: %s\n"
+            "  RX Subdev: %s\n"
+            "  TX DSP: %s\n"
+            "  TX Dboard: %s\n"
+            "  TX Subdev: %s\n"
+        )
+            % (*_dev)[DEVICE_PROP_NAME].as<std::string>()
+            % _mboard[MBOARD_PROP_NAME].as<std::string>()
+            % _rx_dsp[DSP_PROP_NAME].as<std::string>()
+            % _rx_dboard[DBOARD_PROP_NAME].as<std::string>()
+            % _rx_subdev[SUBDEV_PROP_NAME].as<std::string>()
+            % _tx_dsp[DSP_PROP_NAME].as<std::string>()
+            % _tx_dboard[DBOARD_PROP_NAME].as<std::string>()
+            % _tx_subdev[SUBDEV_PROP_NAME].as<std::string>()
+        );
     }
 
     /*******************************************************************
@@ -83,6 +102,10 @@ public:
         _mboard[MBOARD_PROP_CLOCK_CONFIG] = clock_config;
     }
 
+    float read_rssi(void){
+        return _rx_subdev[SUBDEV_PROP_RSSI].as<float>();
+    }
+
     /*******************************************************************
      * RX methods
      ******************************************************************/
@@ -126,6 +149,10 @@ public:
         return _rx_subdev[SUBDEV_PROP_ANTENNA_NAMES].as<prop_names_t>();
     }
 
+    bool get_rx_lo_locked(void){
+        return _rx_subdev[SUBDEV_PROP_LO_LOCKED].as<bool>();
+    }
+
     /*******************************************************************
      * TX methods
      ******************************************************************/
@@ -169,11 +196,17 @@ public:
         return _tx_subdev[SUBDEV_PROP_ANTENNA_NAMES].as<prop_names_t>();
     }
 
+    bool get_tx_lo_locked(void){
+        return _tx_subdev[SUBDEV_PROP_LO_LOCKED].as<bool>();
+    }
+
 private:
     device::sptr _dev;
     wax::obj _mboard;
     wax::obj _rx_dsp;
     wax::obj _tx_dsp;
+    wax::obj _rx_dboard;
+    wax::obj _tx_dboard;
     wax::obj _rx_subdev;
     wax::obj _tx_subdev;
 };
@@ -181,6 +214,6 @@ private:
 /***********************************************************************
  * The Make Function
  **********************************************************************/
-simple_usrp::sptr simple_usrp::make(const std::string &args){
-    return sptr(new simple_usrp_impl(device_addr_t::from_args_str(args)));
+simple_usrp::sptr simple_usrp::make(const device_addr_t &dev_addr){
+    return sptr(new simple_usrp_impl(dev_addr));
 }
diff --git a/host/lib/usrp/usrp2/clock_control.cpp b/host/lib/usrp/usrp2/clock_control.cpp
index dcd7ce9da..72f1f1c7a 100644
--- a/host/lib/usrp/usrp2/clock_control.cpp
+++ b/host/lib/usrp/usrp2/clock_control.cpp
@@ -21,6 +21,7 @@
 #include "usrp2_regs.hpp" //spi slave constants
 #include <boost/cstdint.hpp>
 
+using namespace uhd;
 using namespace uhd::usrp;
 
 /*!
diff --git a/host/lib/usrp/usrp2/dboard_iface.cpp b/host/lib/usrp/usrp2/dboard_iface.cpp
index 2859a7981..74d80163c 100644
--- a/host/lib/usrp/usrp2/dboard_iface.cpp
+++ b/host/lib/usrp/usrp2/dboard_iface.cpp
@@ -17,14 +17,17 @@
 
 #include "usrp2_iface.hpp"
 #include "clock_control.hpp"
-#include "usrp2_regs.hpp"
+#include "usrp2_regs.hpp" //wishbone address constants
+#include <uhd/usrp/dboard_iface.hpp>
 #include <uhd/types/dict.hpp>
 #include <uhd/utils/assert.hpp>
 #include <boost/assign/list_of.hpp>
 #include <boost/asio.hpp> //htonl and ntohl
 #include <boost/math/special_functions/round.hpp>
-#include <algorithm>
+#include "ad7922_regs.hpp" //aux adc
+#include "ad5624_regs.hpp" //aux dac
 
+using namespace uhd;
 using namespace uhd::usrp;
 
 class usrp2_dboard_iface : public dboard_iface{
@@ -39,8 +42,8 @@ public:
     void set_gpio_ddr(unit_t, boost::uint16_t);
     boost::uint16_t read_gpio(unit_t);
 
-    void write_i2c(int, const byte_vector_t &);
-    byte_vector_t read_i2c(int, size_t);
+    void write_i2c(boost::uint8_t, const byte_vector_t &);
+    byte_vector_t read_i2c(boost::uint8_t, size_t);
 
     double get_clock_rate(unit_t);
     void set_clock_enabled(unit_t, bool);
@@ -64,6 +67,9 @@ private:
     usrp2_iface::sptr _iface;
     clock_control::sptr _clk_ctrl;
     boost::uint32_t _ddr_shadow;
+
+    uhd::dict<unit_t, ad5624_regs_t> _dac_regs;
+    void _write_aux_dac(unit_t);
 };
 
 /***********************************************************************
@@ -91,6 +97,16 @@ usrp2_dboard_iface::usrp2_dboard_iface(usrp2_iface::sptr iface, clock_control::s
     }
     _iface->poke32(FR_GPIO_TX_SEL, new_sels);
     _iface->poke32(FR_GPIO_RX_SEL, new_sels);
+
+    //reset the aux dacs
+    _dac_regs[UNIT_RX] = ad5624_regs_t();
+    _dac_regs[UNIT_TX] = ad5624_regs_t();
+    BOOST_FOREACH(unit_t unit, _dac_regs.keys()){
+        _dac_regs[unit].data = 1;
+        _dac_regs[unit].addr = ad5624_regs_t::ADDR_ALL;
+        _dac_regs[unit].cmd  = ad5624_regs_t::CMD_RESET;
+        this->_write_aux_dac(unit);
+    }
 }
 
 usrp2_dboard_iface::~usrp2_dboard_iface(void){
@@ -196,84 +212,67 @@ boost::uint32_t usrp2_dboard_iface::read_write_spi(
 /***********************************************************************
  * I2C
  **********************************************************************/
-void usrp2_dboard_iface::write_i2c(int i2c_addr, const byte_vector_t &buf){
-    //setup the out data
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO);
-    out_data.data.i2c_args.addr = i2c_addr;
-    out_data.data.i2c_args.bytes = buf.size();
-
-    //limitation of i2c transaction size
-    ASSERT_THROW(buf.size() <= sizeof(out_data.data.i2c_args.data));
-
-    //copy in the data
-    std::copy(buf.begin(), buf.end(), out_data.data.i2c_args.data);
-
-    //send and recv
-    usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE);
+void usrp2_dboard_iface::write_i2c(boost::uint8_t addr, const byte_vector_t &bytes){
+    return _iface->write_i2c(addr, bytes);
 }
 
-dboard_iface::byte_vector_t usrp2_dboard_iface::read_i2c(int i2c_addr, size_t num_bytes){
-    //setup the out data
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO);
-    out_data.data.i2c_args.addr = i2c_addr;
-    out_data.data.i2c_args.bytes = num_bytes;
-
-    //limitation of i2c transaction size
-    ASSERT_THROW(num_bytes <= sizeof(out_data.data.i2c_args.data));
-
-    //send and recv
-    usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE);
-    ASSERT_THROW(in_data.data.i2c_args.addr = num_bytes);
-
-    //copy out the data
-    byte_vector_t result(num_bytes);
-    std::copy(in_data.data.i2c_args.data, in_data.data.i2c_args.data + num_bytes, result.begin());
-    return result;
+byte_vector_t usrp2_dboard_iface::read_i2c(boost::uint8_t addr, size_t num_bytes){
+    return _iface->read_i2c(addr, num_bytes);
 }
 
 /***********************************************************************
  * Aux DAX/ADC
  **********************************************************************/
-/*!
- * Static function to convert a unit type enum
- * to an over-the-wire value for the usrp2 control.
- * \param unit the dboard interface unit type enum
- * \return an over the wire representation
- */
-static boost::uint8_t unit_to_otw(dboard_iface::unit_t unit){
-    switch(unit){
-    case dboard_iface::UNIT_TX: return USRP2_DIR_TX;
-    case dboard_iface::UNIT_RX: return USRP2_DIR_RX;
-    }
-    throw std::invalid_argument("unknown unit type");
+void usrp2_dboard_iface::_write_aux_dac(unit_t unit){
+    static const uhd::dict<unit_t, int> unit_to_spi_dac = boost::assign::map_list_of
+        (UNIT_RX, SPI_SS_RX_DAC)
+        (UNIT_TX, SPI_SS_TX_DAC)
+    ;
+    _iface->transact_spi(
+        unit_to_spi_dac[unit], spi_config_t::EDGE_FALL, 
+        _dac_regs[unit].get_reg(), 24, false /*no rb*/
+    );
 }
 
 void usrp2_dboard_iface::write_aux_dac(unit_t unit, int which, float value){
-    //setup the out data
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_WRITE_THIS_TO_THE_AUX_DAC_BRO);
-    out_data.data.aux_args.dir = unit_to_otw(unit);
-    out_data.data.aux_args.which = which;
-    out_data.data.aux_args.value = htonl(boost::math::iround(4095*value/3.3));
-
-    //send and recv
-    usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_DONE_WITH_THAT_AUX_DAC_DUDE);
+    _dac_regs[unit].data = boost::math::iround(4095*value/3.3);
+    _dac_regs[unit].cmd = ad5624_regs_t::CMD_WR_UP_DAC_CHAN_N;
+    switch(which){
+    case 0: _dac_regs[unit].addr = ad5624_regs_t::ADDR_DAC_A; break;
+    case 1: _dac_regs[unit].addr = ad5624_regs_t::ADDR_DAC_B; break;
+    case 2: _dac_regs[unit].addr = ad5624_regs_t::ADDR_DAC_C; break;
+    case 3: _dac_regs[unit].addr = ad5624_regs_t::ADDR_DAC_D; break;
+    default: throw std::runtime_error("not a possible aux dac, must be 0, 1, 2, or 3");
+    }
+    this->_write_aux_dac(unit);
 }
 
 float usrp2_dboard_iface::read_aux_adc(unit_t unit, int which){
-    //setup the out data
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_READ_FROM_THIS_AUX_ADC_BRO);
-    out_data.data.aux_args.dir = unit_to_otw(unit);
-    out_data.data.aux_args.which = which;
-
-    //send and recv
-    usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_DONE_WITH_THAT_AUX_ADC_DUDE);
-    return float(3.3*ntohl(in_data.data.aux_args.value)/4095);
+    static const uhd::dict<unit_t, int> unit_to_spi_adc = boost::assign::map_list_of
+        (UNIT_RX, SPI_SS_RX_ADC)
+        (UNIT_TX, SPI_SS_TX_ADC)
+    ;
+
+    //setup spi config args
+    spi_config_t config;
+    config.mosi_edge = spi_config_t::EDGE_FALL;
+    config.miso_edge = spi_config_t::EDGE_RISE;
+
+    //setup the spi registers
+    ad7922_regs_t ad7922_regs;
+    ad7922_regs.mod = which; //normal mode: mod == chn
+    ad7922_regs.chn = which;
+
+    //write and read spi
+    _iface->transact_spi(
+        unit_to_spi_adc[unit], config,
+        ad7922_regs.get_reg(), 16, false /*no rb*/
+    );
+    ad7922_regs.set_reg(boost::uint16_t(_iface->transact_spi(
+        unit_to_spi_adc[unit], config,
+        ad7922_regs.get_reg(), 16, true /*rb*/
+    )));
+
+    //convert to voltage and return
+    return float(3.3*ad7922_regs.result/4095);
 }
diff --git a/host/lib/usrp/usrp2/dboard_impl.cpp b/host/lib/usrp/usrp2/dboard_impl.cpp
index fe74219d6..403faf5cf 100644
--- a/host/lib/usrp/usrp2/dboard_impl.cpp
+++ b/host/lib/usrp/usrp2/dboard_impl.cpp
@@ -33,22 +33,16 @@ using namespace uhd::usrp;
  * Helper Methods
  **********************************************************************/
 void usrp2_impl::dboard_init(void){
-    //grab the dboard ids over the control line
-    usrp2_ctrl_data_t out_data;
-    out_data.id = htonl(USRP2_CTRL_ID_GIVE_ME_YOUR_DBOARD_IDS_BRO);
-    usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THESE_ARE_MY_DBOARD_IDS_DUDE);
-
-    //extract the dboard ids an convert them
-    dboard_id_t rx_dboard_id = ntohs(in_data.data.dboard_ids.rx_id);
-    dboard_id_t tx_dboard_id = ntohs(in_data.data.dboard_ids.tx_id);
+    //read the dboard eeprom to extract the dboard ids
+    _rx_db_eeprom = dboard_eeprom_t(_iface->read_eeprom(I2C_ADDR_RX_DB, 0, dboard_eeprom_t::num_bytes()));
+    _tx_db_eeprom = dboard_eeprom_t(_iface->read_eeprom(I2C_ADDR_TX_DB, 0, dboard_eeprom_t::num_bytes()));
 
     //create a new dboard interface and manager
     dboard_iface::sptr _dboard_iface(
         make_usrp2_dboard_iface(_iface, _clk_ctrl)
     );
     _dboard_manager = dboard_manager::make(
-        rx_dboard_id, tx_dboard_id, _dboard_iface
+        _rx_db_eeprom.id, _tx_db_eeprom.id, _dboard_iface
     );
 
     //load dboards
@@ -72,7 +66,7 @@ void usrp2_impl::dboard_init(void){
 void usrp2_impl::update_rx_mux_config(void){
     //calculate the rx mux
     boost::uint32_t rx_mux = 0;
-    ASSERT_THROW(_rx_subdevs_in_use.size() == 1);
+    UHD_ASSERT_THROW(_rx_subdevs_in_use.size() == 1);
     wax::obj rx_subdev = _dboard_manager->get_rx_subdev(_rx_subdevs_in_use.at(0));
     std::cout << "Using: " << rx_subdev[SUBDEV_PROP_NAME].as<std::string>() << std::endl;
     if (rx_subdev[SUBDEV_PROP_QUADRATURE].as<bool>()){
@@ -90,11 +84,11 @@ void usrp2_impl::update_rx_mux_config(void){
 void usrp2_impl::update_tx_mux_config(void){
     //calculate the tx mux
     boost::uint32_t tx_mux = 0x10;
-    ASSERT_THROW(_tx_subdevs_in_use.size() == 1);
+    UHD_ASSERT_THROW(_tx_subdevs_in_use.size() == 1);
     wax::obj tx_subdev = _dboard_manager->get_tx_subdev(_tx_subdevs_in_use.at(0));
     std::cout << "Using: " << tx_subdev[SUBDEV_PROP_NAME].as<std::string>() << std::endl;
     if (tx_subdev[SUBDEV_PROP_IQ_SWAPPED].as<bool>()){
-        tx_mux = (((tx_mux >> 0) & 0x1) << 1) | (((tx_mux >> 1) & 0x1) << 0);
+        tx_mux = (((tx_mux >> 0) & 0xf) << 4) | (((tx_mux >> 4) & 0xf) << 0);
     }
 
     _iface->poke32(FR_DSP_TX_MUX, tx_mux);
@@ -125,19 +119,28 @@ void usrp2_impl::rx_dboard_get(const wax::obj &key_, wax::obj &val){
         val = _rx_subdevs_in_use;
         return;
 
-    //case DBOARD_PROP_CODEC:
-    //    throw std::runtime_error("unhandled prop in usrp2 dboard");
+    case DBOARD_PROP_DBOARD_ID:
+        val = _rx_db_eeprom.id;
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
 void usrp2_impl::rx_dboard_set(const wax::obj &key, const wax::obj &val){
-    if (key.as<dboard_prop_t>() == DBOARD_PROP_USED_SUBDEVS){
+    switch(key.as<dboard_prop_t>()){
+    case DBOARD_PROP_USED_SUBDEVS:
         _rx_subdevs_in_use = val.as<prop_names_t>();
         update_rx_mux_config(); //if the val is bad, this will throw
         return;
-    }
 
-    throw std::runtime_error("Cannot set on usrp2 dboard");
+    case DBOARD_PROP_DBOARD_ID:
+        _rx_db_eeprom.id = val.as<dboard_id_t>();
+        _iface->write_eeprom(I2C_ADDR_RX_DB, 0, _rx_db_eeprom.get_eeprom_bytes());
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
 }
 
 /***********************************************************************
@@ -165,17 +168,26 @@ void usrp2_impl::tx_dboard_get(const wax::obj &key_, wax::obj &val){
         val = _tx_subdevs_in_use;
         return;
 
-    //case DBOARD_PROP_CODEC:
-    //    throw std::runtime_error("unhandled prop in usrp2 dboard");
+    case DBOARD_PROP_DBOARD_ID:
+        val = _tx_db_eeprom.id;
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
 void usrp2_impl::tx_dboard_set(const wax::obj &key, const wax::obj &val){
-    if (key.as<dboard_prop_t>() == DBOARD_PROP_USED_SUBDEVS){
+    switch(key.as<dboard_prop_t>()){
+    case DBOARD_PROP_USED_SUBDEVS:
         _tx_subdevs_in_use = val.as<prop_names_t>();
         update_tx_mux_config(); //if the val is bad, this will throw
         return;
-    }
 
-    throw std::runtime_error("Cannot set on usrp2 dboard");
+    case DBOARD_PROP_DBOARD_ID:
+        _tx_db_eeprom.id = val.as<dboard_id_t>();
+        _iface->write_eeprom(I2C_ADDR_TX_DB, 0, _tx_db_eeprom.get_eeprom_bytes());
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
 }
diff --git a/host/lib/usrp/usrp2/dsp_impl.cpp b/host/lib/usrp/usrp2/dsp_impl.cpp
index 204277ba7..84314a656 100644
--- a/host/lib/usrp/usrp2/dsp_impl.cpp
+++ b/host/lib/usrp/usrp2/dsp_impl.cpp
@@ -40,7 +40,7 @@ template <class T> T log2(T num){
  * DDC Helper Methods
  **********************************************************************/
 static boost::uint32_t calculate_freq_word_and_update_actual_freq(double &freq, double clock_freq){
-    ASSERT_THROW(std::abs(freq) < clock_freq/2.0);
+    UHD_ASSERT_THROW(std::abs(freq) < clock_freq/2.0);
     static const double scale_factor = std::pow(2.0, 32);
 
     //calculate the freq register word
@@ -117,6 +117,8 @@ void usrp2_impl::ddc_get(const wax::obj &key, wax::obj &val){
     case DSP_PROP_HOST_RATE:
         val = get_master_clock_freq()/_ddc_decim;
         return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -139,8 +141,7 @@ void usrp2_impl::ddc_set(const wax::obj &key, const wax::obj &val){
         }
         return;
 
-    default:
-        throw std::runtime_error("Error: trying to set read-only property on usrp2 ddc0");
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
 
@@ -200,6 +201,8 @@ void usrp2_impl::duc_get(const wax::obj &key, wax::obj &val){
     case DSP_PROP_HOST_RATE:
         val = get_master_clock_freq()/_duc_interp;
         return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -222,7 +225,6 @@ void usrp2_impl::duc_set(const wax::obj &key, const wax::obj &val){
         }
         return;
 
-    default:
-        throw std::runtime_error("Error: trying to set read-only property on usrp2 duc0");
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
diff --git a/host/lib/usrp/usrp2/fw_common.h b/host/lib/usrp/usrp2/fw_common.h
index b600a2a70..e80001ff2 100644
--- a/host/lib/usrp/usrp2/fw_common.h
+++ b/host/lib/usrp/usrp2/fw_common.h
@@ -32,6 +32,10 @@ extern "C" {
 #define _SINS_
 #endif
 
+//defines the protocol version in this shared header
+//increment this value when the protocol is changed
+#define USRP2_PROTO_VERSION 2
+
 //used to differentiate control packets over data port
 #define USRP2_INVALID_VRT_HEADER 0
 
@@ -57,9 +61,6 @@ typedef enum{
     USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE = 'M',
     USRP2_CTRL_ID_HERE_IS_A_NEW_MAC_ADDR_BRO = 'n',
 
-    USRP2_CTRL_ID_GIVE_ME_YOUR_DBOARD_IDS_BRO = 'd',
-    USRP2_CTRL_ID_THESE_ARE_MY_DBOARD_IDS_DUDE = 'D',
-
     USRP2_CTRL_ID_TRANSACT_ME_SOME_SPI_BRO = 's',
     USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE = 'S',
 
@@ -69,12 +70,6 @@ typedef enum{
     USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO = 'h',
     USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE = 'H',
 
-    USRP2_CTRL_ID_WRITE_THIS_TO_THE_AUX_DAC_BRO = 'x',
-    USRP2_CTRL_ID_DONE_WITH_THAT_AUX_DAC_DUDE = 'X',
-
-    USRP2_CTRL_ID_READ_FROM_THIS_AUX_ADC_BRO = 'y',
-    USRP2_CTRL_ID_DONE_WITH_THAT_AUX_ADC_DUDE = 'Y',
-
     USRP2_CTRL_ID_SEND_STREAM_COMMAND_FOR_ME_BRO = '{',
     USRP2_CTRL_ID_GOT_THAT_STREAM_COMMAND_DUDE = '}',
 
@@ -89,26 +84,23 @@ typedef enum{
 } usrp2_ctrl_id_t;
 
 typedef enum{
-    USRP2_DIR_RX,
-    USRP2_DIR_TX
+    USRP2_DIR_RX = 'r',
+    USRP2_DIR_TX = 't'
 } usrp2_dir_which_t;
 
 typedef enum{
-    USRP2_CLK_EDGE_RISE,
-    USRP2_CLK_EDGE_FALL
+    USRP2_CLK_EDGE_RISE = 'r',
+    USRP2_CLK_EDGE_FALL = 'f'
 } usrp2_clk_edge_t;
 
 typedef struct{
+    _SINS_ uint32_t proto_ver;
     _SINS_ uint32_t id;
     _SINS_ uint32_t seq;
     union{
         _SINS_ uint32_t ip_addr;
         _SINS_ uint8_t mac_addr[6];
         struct {
-            _SINS_ uint16_t rx_id;
-            _SINS_ uint16_t tx_id;
-        } dboard_ids;
-        struct {
             _SINS_ uint8_t dev;
             _SINS_ uint8_t miso_edge;
             _SINS_ uint8_t mosi_edge;
@@ -122,12 +114,6 @@ typedef struct{
             _SINS_ uint8_t data[sizeof(_SINS_ uint32_t)];
         } i2c_args;
         struct {
-            _SINS_ uint8_t dir;
-            _SINS_ uint8_t which;
-            _SINS_ uint8_t _pad[2];
-            _SINS_ uint32_t value;
-        } aux_args;
-        struct {
             _SINS_ uint8_t now; //stream now?
             _SINS_ uint8_t continuous; //auto-reload commmands?
             _SINS_ uint8_t chain;
diff --git a/host/lib/usrp/usrp2/mboard_impl.cpp b/host/lib/usrp/usrp2/mboard_impl.cpp
index d7728238c..36bef4f25 100644
--- a/host/lib/usrp/usrp2/mboard_impl.cpp
+++ b/host/lib/usrp/usrp2/mboard_impl.cpp
@@ -100,6 +100,7 @@ void usrp2_impl::update_clock_config(void){
     case clock_config_t::REF_INT : _iface->poke32(FR_CLOCK_CONTROL, 0x10); break;
     case clock_config_t::REF_SMA : _iface->poke32(FR_CLOCK_CONTROL, 0x1C); break;
     case clock_config_t::REF_MIMO: _iface->poke32(FR_CLOCK_CONTROL, 0x15); break;
+    default: throw std::runtime_error("usrp2: unhandled clock configuration reference source");
     }
 
     //clock source ref 10mhz
@@ -151,7 +152,7 @@ void usrp2_impl::issue_ddc_stream_cmd(const stream_cmd_t &stream_cmd){
 
     //send and recv
     usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_GOT_THAT_STREAM_COMMAND_DUDE);
+    UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_GOT_THAT_STREAM_COMMAND_DUDE);
 }
 
 /***********************************************************************
@@ -170,7 +171,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
 
             //send and recv
             usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);
+            UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);
 
             //extract the address
             val = mac_addr_t::from_bytes(in_data.data.mac_addr).to_string();
@@ -184,7 +185,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
 
             //send and recv
             usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);
+            UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);
 
             //extract the address
             val = boost::asio::ip::address_v4(ntohl(in_data.data.ip_addr)).to_string();
@@ -208,7 +209,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _rx_dboard_proxy->get_link();
         return;
 
@@ -217,7 +218,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_TX_DBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _tx_dboard_proxy->get_link();
         return;
 
@@ -226,7 +227,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DSP:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _rx_dsp_proxy->get_link();
         return;
 
@@ -235,7 +236,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_TX_DSP:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _tx_dsp_proxy->get_link();
         return;
 
@@ -247,9 +248,7 @@ void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         val = _clock_config;
         return;
 
-    default:
-        throw std::runtime_error("Error: trying to get write-only property on usrp2 mboard");
-
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -268,7 +267,7 @@ void usrp2_impl::mboard_set(const wax::obj &key, const wax::obj &val){
 
             //send and recv
             usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);
+            UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);
             return;
         }
 
@@ -280,7 +279,7 @@ void usrp2_impl::mboard_set(const wax::obj &key, const wax::obj &val){
 
             //send and recv
             usrp2_ctrl_data_t in_data = _iface->ctrl_send_and_recv(out_data);
-            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);
+            UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);
             return;
         }
     }
@@ -305,8 +304,6 @@ void usrp2_impl::mboard_set(const wax::obj &key, const wax::obj &val){
         issue_ddc_stream_cmd(val.as<stream_cmd_t>());
         return;
 
-    default:
-        throw std::runtime_error("Error: trying to set read-only property on usrp2 mboard");
-
+    default: UHD_THROW_PROP_SET_ERROR();
     }
 }
diff --git a/host/lib/usrp/usrp2/usrp2_iface.cpp b/host/lib/usrp/usrp2/usrp2_iface.cpp
index 5c84fd8d3..e43b9678e 100644
--- a/host/lib/usrp/usrp2/usrp2_iface.cpp
+++ b/host/lib/usrp/usrp2/usrp2_iface.cpp
@@ -19,12 +19,13 @@
 #include <uhd/utils/assert.hpp>
 #include <uhd/types/dict.hpp>
 #include <boost/thread.hpp>
+#include <boost/foreach.hpp>
 #include <boost/asio.hpp> //used for htonl and ntohl
 #include <boost/assign/list_of.hpp>
 #include <stdexcept>
+#include <algorithm>
 
 using namespace uhd;
-using namespace uhd::usrp;
 
 class usrp2_iface_impl : public usrp2_iface{
 public:
@@ -85,9 +86,51 @@ public:
 
         //send and recv
         usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
-        ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE);
+        UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE);
 
-        return ntohl(out_data.data.spi_args.data);
+        return ntohl(in_data.data.spi_args.data);
+    }
+
+/***********************************************************************
+ * I2C
+ **********************************************************************/
+    void write_i2c(boost::uint8_t addr, const byte_vector_t &buf){
+        //setup the out data
+        usrp2_ctrl_data_t out_data;
+        out_data.id = htonl(USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO);
+        out_data.data.i2c_args.addr = addr;
+        out_data.data.i2c_args.bytes = buf.size();
+
+        //limitation of i2c transaction size
+        UHD_ASSERT_THROW(buf.size() <= sizeof(out_data.data.i2c_args.data));
+
+        //copy in the data
+        std::copy(buf.begin(), buf.end(), out_data.data.i2c_args.data);
+
+        //send and recv
+        usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
+        UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE);
+    }
+
+    byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes){
+        //setup the out data
+        usrp2_ctrl_data_t out_data;
+        out_data.id = htonl(USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO);
+        out_data.data.i2c_args.addr = addr;
+        out_data.data.i2c_args.bytes = num_bytes;
+
+        //limitation of i2c transaction size
+        UHD_ASSERT_THROW(num_bytes <= sizeof(out_data.data.i2c_args.data));
+
+        //send and recv
+        usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
+        UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE);
+        UHD_ASSERT_THROW(in_data.data.i2c_args.addr = num_bytes);
+
+        //copy out the data
+        byte_vector_t result(num_bytes);
+        std::copy(in_data.data.i2c_args.data, in_data.data.i2c_args.data + num_bytes, result.begin());
+        return result;
     }
 
 /***********************************************************************
@@ -98,6 +141,7 @@ public:
 
         //fill in the seq number and send
         usrp2_ctrl_data_t out_copy = out_data;
+        out_copy.proto_ver = htonl(USRP2_PROTO_VERSION);
         out_copy.seq = htonl(++_ctrl_seq_num);
         _ctrl_transport->send(boost::asio::buffer(&out_copy, sizeof(usrp2_ctrl_data_t)));
 
@@ -105,6 +149,13 @@ public:
         while(true){
             usrp2_ctrl_data_t in_data;
             size_t len = _ctrl_transport->recv(boost::asio::buffer(&in_data, sizeof(in_data)));
+            if(len >= sizeof(boost::uint32_t) and ntohl(in_data.proto_ver) != USRP2_PROTO_VERSION){
+                throw std::runtime_error(str(
+                    boost::format("Expected protocol version %d, but got %d\n"
+                    "The firmware build does not match the host code build."
+                    ) % int(USRP2_PROTO_VERSION) % ntohl(in_data.proto_ver)
+                ));
+            }
             if (len >= sizeof(usrp2_ctrl_data_t) and ntohl(in_data.seq) == _ctrl_seq_num){
                 return in_data;
             }
@@ -142,7 +193,7 @@ private:
 
         //send and recv
         usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
-        ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_OMG_POKED_REGISTER_SO_BAD_DUDE);
+        UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_OMG_POKED_REGISTER_SO_BAD_DUDE);
     }
 
     template <class T> T peek(boost::uint32_t addr){
@@ -154,7 +205,7 @@ private:
 
         //send and recv
         usrp2_ctrl_data_t in_data = this->ctrl_send_and_recv(out_data);
-        ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_WOAH_I_DEFINITELY_PEEKED_IT_DUDE);
+        UHD_ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_WOAH_I_DEFINITELY_PEEKED_IT_DUDE);
         return T(ntohl(out_data.data.poke_args.data));
     }
 
diff --git a/host/lib/usrp/usrp2/usrp2_iface.hpp b/host/lib/usrp/usrp2/usrp2_iface.hpp
index 1298d87f1..7158c58d0 100644
--- a/host/lib/usrp/usrp2/usrp2_iface.hpp
+++ b/host/lib/usrp/usrp2/usrp2_iface.hpp
@@ -19,18 +19,27 @@
 #define INCLUDED_USRP2_IFACE_HPP
 
 #include <uhd/transport/udp_simple.hpp>
-#include <uhd/usrp/dboard_iface.hpp> //spi config
+#include <uhd/types/serial.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/utility.hpp>
 #include <boost/cstdint.hpp>
 #include "fw_common.h"
 
+////////////////////////////////////////////////////////////////////////
+// I2C addresses
+////////////////////////////////////////////////////////////////////////
+#define I2C_DEV_EEPROM  0x50 // 24LC02[45]:  7-bits 1010xxx
+#define	I2C_ADDR_MBOARD (I2C_DEV_EEPROM | 0x0)
+#define	I2C_ADDR_TX_DB  (I2C_DEV_EEPROM | 0x4)
+#define	I2C_ADDR_RX_DB  (I2C_DEV_EEPROM | 0x5)
+////////////////////////////////////////////////////////////////////////
+
 /*!
  * The usrp2 interface class:
  * Provides a set of functions to implementation layer.
  * Including spi, peek, poke, control...
  */
-class usrp2_iface : boost::noncopyable{
+class usrp2_iface : public uhd::i2c_iface, boost::noncopyable{
 public:
     typedef boost::shared_ptr<usrp2_iface> sptr;
 
@@ -87,7 +96,7 @@ public:
      */
     virtual boost::uint32_t transact_spi(
         int which_slave,
-        const uhd::usrp::spi_config_t &config,
+        const uhd::spi_config_t &config,
         boost::uint32_t data,
         size_t num_bits,
         bool readback
diff --git a/host/lib/usrp/usrp2/usrp2_impl.cpp b/host/lib/usrp/usrp2/usrp2_impl.cpp
index 3bdc5bd02..4079357f9 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.cpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.cpp
@@ -70,6 +70,7 @@ uhd::device_addrs_t usrp2::find(const device_addr_t &hint){
 
     //send a hello control packet
     usrp2_ctrl_data_t ctrl_data_out;
+    ctrl_data_out.proto_ver = htonl(USRP2_PROTO_VERSION);
     ctrl_data_out.id = htonl(USRP2_CTRL_ID_GIVE_ME_YOUR_IP_ADDR_BRO);
     udp_transport->send(boost::asio::buffer(&ctrl_data_out, sizeof(ctrl_data_out)));
 
@@ -185,7 +186,7 @@ void usrp2_impl::get(const wax::obj &key_, wax::obj &val){
         return;
 
     case DEVICE_PROP_MBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _mboard_proxy->get_link();
         return;
 
@@ -201,9 +202,10 @@ void usrp2_impl::get(const wax::obj &key_, wax::obj &val){
         val = size_t(_max_tx_samples_per_packet);
         return;
 
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
 void usrp2_impl::set(const wax::obj &, const wax::obj &){
-    throw std::runtime_error("Cannot set in usrp2 device");
+    UHD_THROW_PROP_SET_ERROR();
 }
diff --git a/host/lib/usrp/usrp2/usrp2_impl.hpp b/host/lib/usrp/usrp2/usrp2_impl.hpp
index dbcee367b..1c9387744 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.hpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.hpp
@@ -25,6 +25,7 @@
 #include <uhd/types/otw_type.hpp>
 #include <uhd/types/stream_cmd.hpp>
 #include <uhd/types/clock_config.hpp>
+#include <uhd/usrp/dboard_eeprom.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/function.hpp>
 #include <uhd/transport/vrt.hpp>
@@ -161,12 +162,14 @@ private:
     void rx_dboard_set(const wax::obj &, const wax::obj &);
     wax_obj_proxy::sptr _rx_dboard_proxy;
     uhd::prop_names_t _rx_subdevs_in_use;
+    uhd::usrp::dboard_eeprom_t _rx_db_eeprom;
 
     //properties interface for tx dboard
     void tx_dboard_get(const wax::obj &, wax::obj &);
     void tx_dboard_set(const wax::obj &, const wax::obj &);
     wax_obj_proxy::sptr _tx_dboard_proxy;
     uhd::prop_names_t _tx_subdevs_in_use;
+    uhd::usrp::dboard_eeprom_t _tx_db_eeprom;
     void update_rx_mux_config(void);
     void update_tx_mux_config(void);
 
diff --git a/host/lib/usrp/usrp_e/dboard_iface.cpp b/host/lib/usrp/usrp_e/dboard_iface.cpp
index 12e8fe206..f69cdd2b4 100644
--- a/host/lib/usrp/usrp_e/dboard_iface.cpp
+++ b/host/lib/usrp/usrp_e/dboard_iface.cpp
@@ -23,6 +23,7 @@
 #include <boost/assign/list_of.hpp>
 #include <linux/usrp_e.h> //i2c and spi constants
 
+using namespace uhd;
 using namespace uhd::usrp;
 
 class usrp_e_dboard_iface : public dboard_iface{
@@ -37,8 +38,8 @@ public:
     void set_gpio_ddr(unit_t, boost::uint16_t);
     boost::uint16_t read_gpio(unit_t);
 
-    void write_i2c(int, const byte_vector_t &);
-    byte_vector_t read_i2c(int, size_t);
+    void write_i2c(boost::uint8_t, const byte_vector_t &);
+    byte_vector_t read_i2c(boost::uint8_t, size_t);
 
     void write_spi(
         unit_t unit,
@@ -169,41 +170,12 @@ boost::uint32_t usrp_e_dboard_iface::read_write_spi(
 /***********************************************************************
  * I2C
  **********************************************************************/
-static const size_t max_i2c_data_bytes = 10;
-
-void usrp_e_dboard_iface::write_i2c(int i2c_addr, const byte_vector_t &buf){
-    //allocate some memory for this transaction
-    ASSERT_THROW(buf.size() <= max_i2c_data_bytes);
-    boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
-
-    //load the data struct
-    usrp_e_i2c &data = reinterpret_cast<usrp_e_i2c&>(mem);
-    data.addr = i2c_addr;
-    data.len = buf.size();
-    std::copy(buf.begin(), buf.end(), data.data);
-
-    //call the spi ioctl
-    _iface->ioctl(USRP_E_I2C_WRITE, &data);
+void usrp_e_dboard_iface::write_i2c(boost::uint8_t addr, const byte_vector_t &bytes){
+    return _iface->write_i2c(addr, bytes);
 }
 
-dboard_iface::byte_vector_t usrp_e_dboard_iface::read_i2c(int i2c_addr, size_t num_bytes){
-    //allocate some memory for this transaction
-    ASSERT_THROW(num_bytes <= max_i2c_data_bytes);
-    boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
-
-    //load the data struct
-    usrp_e_i2c &data = reinterpret_cast<usrp_e_i2c&>(mem);
-    data.addr = i2c_addr;
-    data.len = num_bytes;
-
-    //call the spi ioctl
-    _iface->ioctl(USRP_E_I2C_READ, &data);
-
-    //unload the data
-    byte_vector_t ret(data.len);
-    ASSERT_THROW(ret.size() == num_bytes);
-    std::copy(data.data, data.data+ret.size(), ret.begin());
-    return ret;
+byte_vector_t usrp_e_dboard_iface::read_i2c(boost::uint8_t addr, size_t num_bytes){
+    return _iface->read_i2c(addr, num_bytes);
 }
 
 /***********************************************************************
diff --git a/host/lib/usrp/usrp_e/dboard_impl.cpp b/host/lib/usrp/usrp_e/dboard_impl.cpp
index df0f1d9a9..e87a2c0a5 100644
--- a/host/lib/usrp/usrp_e/dboard_impl.cpp
+++ b/host/lib/usrp/usrp_e/dboard_impl.cpp
@@ -50,26 +50,26 @@ void usrp_e_impl::dboard_init(void){
  * RX Dboard Get
  **********************************************************************/
 void usrp_e_impl::rx_dboard_get(const wax::obj &, wax::obj &){
-    
+    UHD_THROW_PROP_GET_ERROR();
 }
 
 /***********************************************************************
  * RX Dboard Set
  **********************************************************************/
 void usrp_e_impl::rx_dboard_set(const wax::obj &, const wax::obj &){
-    
+    UHD_THROW_PROP_SET_ERROR();
 }
 
 /***********************************************************************
  * TX Dboard Get
  **********************************************************************/
 void usrp_e_impl::tx_dboard_get(const wax::obj &, wax::obj &){
-    
+    UHD_THROW_PROP_GET_ERROR();
 }
 
 /***********************************************************************
  * TX Dboard Set
  **********************************************************************/
 void usrp_e_impl::tx_dboard_set(const wax::obj &, const wax::obj &){
-    
+    UHD_THROW_PROP_SET_ERROR();
 }
diff --git a/host/lib/usrp/usrp_e/dsp_impl.cpp b/host/lib/usrp/usrp_e/dsp_impl.cpp
index e32c76a3d..272ac71b3 100644
--- a/host/lib/usrp/usrp_e/dsp_impl.cpp
+++ b/host/lib/usrp/usrp_e/dsp_impl.cpp
@@ -34,14 +34,14 @@ void usrp_e_impl::rx_ddc_init(void){
  * RX DDC Get
  **********************************************************************/
 void usrp_e_impl::rx_ddc_get(const wax::obj &, wax::obj &){
-    
+    UHD_THROW_PROP_GET_ERROR();
 }
 
 /***********************************************************************
  * RX DDC Set
  **********************************************************************/
 void usrp_e_impl::rx_ddc_set(const wax::obj &, const wax::obj &){
-    
+    UHD_THROW_PROP_SET_ERROR();
 }
 
 /***********************************************************************
@@ -58,12 +58,12 @@ void usrp_e_impl::tx_duc_init(void){
  * TX DUC Get
  **********************************************************************/
 void usrp_e_impl::tx_duc_get(const wax::obj &, wax::obj &){
-    
+    UHD_THROW_PROP_GET_ERROR();
 }
 
 /***********************************************************************
  * TX DUC Set
  **********************************************************************/
 void usrp_e_impl::tx_duc_set(const wax::obj &, const wax::obj &){
-    
+    UHD_THROW_PROP_SET_ERROR();
 }
diff --git a/host/lib/usrp/usrp_e/mboard_impl.cpp b/host/lib/usrp/usrp_e/mboard_impl.cpp
index 2d225c6ea..00ce4b782 100644
--- a/host/lib/usrp/usrp_e/mboard_impl.cpp
+++ b/host/lib/usrp/usrp_e/mboard_impl.cpp
@@ -58,7 +58,7 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _rx_dboard_proxy->get_link();
         return;
 
@@ -67,7 +67,7 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_TX_DBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _tx_dboard_proxy->get_link();
         return;
 
@@ -80,7 +80,7 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_RX_DSP:
-        ASSERT_THROW(name == "ddc0");
+        UHD_ASSERT_THROW(name == "ddc0");
         val = _rx_ddc_proxy->get_link();
         return;
 
@@ -89,7 +89,7 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         return;
 
     case MBOARD_PROP_TX_DSP:
-        ASSERT_THROW(name == "duc0");
+        UHD_ASSERT_THROW(name == "duc0");
         val = _tx_duc_proxy->get_link();
         return;
 
@@ -101,10 +101,7 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
         val = _clock_config;
         return;
 
-    case MBOARD_PROP_TIME_NOW:
-    case MBOARD_PROP_TIME_NEXT_PPS:
-        throw std::runtime_error("Error: trying to get write-only property on usrp-e mboard");
-
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -112,5 +109,5 @@ void usrp_e_impl::mboard_get(const wax::obj &key_, wax::obj &val){
  * Mboard Set
  **********************************************************************/
 void usrp_e_impl::mboard_set(const wax::obj &, const wax::obj &){
-    
+    UHD_THROW_PROP_SET_ERROR();
 }
diff --git a/host/lib/usrp/usrp_e/usrp_e_iface.cpp b/host/lib/usrp/usrp_e/usrp_e_iface.cpp
index d4c988211..41737a716 100644
--- a/host/lib/usrp/usrp_e/usrp_e_iface.cpp
+++ b/host/lib/usrp/usrp_e/usrp_e_iface.cpp
@@ -16,11 +16,14 @@
 //
 
 #include "usrp_e_iface.hpp"
+#include <uhd/utils/assert.hpp>
 #include <sys/ioctl.h> //ioctl
 #include <linux/usrp_e.h> //ioctl structures and constants
 #include <boost/format.hpp>
 #include <stdexcept>
 
+using namespace uhd;
+
 class usrp_e_iface_impl : public usrp_e_iface{
 public:
 
@@ -96,11 +99,51 @@ public:
     }
 
     /*******************************************************************
+     * I2C
+     ******************************************************************/
+    static const size_t max_i2c_data_bytes = 10;
+
+    void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes){
+        //allocate some memory for this transaction
+        UHD_ASSERT_THROW(bytes.size() <= max_i2c_data_bytes);
+        boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
+
+        //load the data struct
+        usrp_e_i2c &data = reinterpret_cast<usrp_e_i2c&>(mem);
+        data.addr = addr;
+        data.len = bytes.size();
+        std::copy(bytes.begin(), bytes.end(), data.data);
+
+        //call the spi ioctl
+        this->ioctl(USRP_E_I2C_WRITE, &data);
+    }
+
+    byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes){
+        //allocate some memory for this transaction
+        UHD_ASSERT_THROW(num_bytes <= max_i2c_data_bytes);
+        boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
+
+        //load the data struct
+        usrp_e_i2c &data = reinterpret_cast<usrp_e_i2c&>(mem);
+        data.addr = addr;
+        data.len = num_bytes;
+
+        //call the spi ioctl
+        this->ioctl(USRP_E_I2C_READ, &data);
+
+        //unload the data
+        byte_vector_t bytes(data.len);
+        UHD_ASSERT_THROW(bytes.size() == num_bytes);
+        std::copy(data.data, data.data+bytes.size(), bytes.begin());
+        return bytes;
+    }
+
+    /*******************************************************************
      * SPI
      ******************************************************************/
     boost::uint32_t transact_spi(
         int which_slave,
-        const uhd::usrp::spi_config_t &config,
+        const spi_config_t &config,
         boost::uint32_t bits,
         size_t num_bits,
         bool readback
@@ -114,8 +157,8 @@ public:
 
         //load the flags
         data.flags = 0;
-        data.flags |= (config.miso_edge == uhd::usrp::spi_config_t::EDGE_RISE)? UE_SPI_LATCH_RISE : UE_SPI_LATCH_FALL;
-        data.flags |= (config.mosi_edge == uhd::usrp::spi_config_t::EDGE_RISE)? UE_SPI_PUSH_FALL  : UE_SPI_PUSH_RISE;
+        data.flags |= (config.miso_edge == spi_config_t::EDGE_RISE)? UE_SPI_LATCH_RISE : UE_SPI_LATCH_FALL;
+        data.flags |= (config.mosi_edge == spi_config_t::EDGE_RISE)? UE_SPI_PUSH_FALL  : UE_SPI_PUSH_RISE;
 
         //call the spi ioctl
         this->ioctl(USRP_E_SPI, &data);
diff --git a/host/lib/usrp/usrp_e/usrp_e_iface.hpp b/host/lib/usrp/usrp_e/usrp_e_iface.hpp
index 4fc3bb33d..763d19581 100644
--- a/host/lib/usrp/usrp_e/usrp_e_iface.hpp
+++ b/host/lib/usrp/usrp_e/usrp_e_iface.hpp
@@ -19,7 +19,7 @@
 #define INCLUDED_USRP_E_IFACE_HPP
 
 #include <uhd/transport/udp_simple.hpp>
-#include <uhd/usrp/dboard_iface.hpp> //spi config
+#include <uhd/types/serial.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/utility.hpp>
 #include <boost/cstdint.hpp>
@@ -29,7 +29,7 @@
  * Provides a set of functions to implementation layer.
  * Including spi, peek, poke, control...
  */
-class usrp_e_iface : boost::noncopyable{
+class usrp_e_iface : boost::noncopyable, public uhd::i2c_iface{
 public:
     typedef boost::shared_ptr<usrp_e_iface> sptr;
 
@@ -87,7 +87,7 @@ public:
      */
     virtual boost::uint32_t transact_spi(
         int which_slave,
-        const uhd::usrp::spi_config_t &config,
+        const uhd::spi_config_t &config,
         boost::uint32_t data,
         size_t num_bits,
         bool readback
diff --git a/host/lib/usrp/usrp_e/usrp_e_impl.cpp b/host/lib/usrp/usrp_e/usrp_e_impl.cpp
index 4d08210e2..211b939ee 100644
--- a/host/lib/usrp/usrp_e/usrp_e_impl.cpp
+++ b/host/lib/usrp/usrp_e/usrp_e_impl.cpp
@@ -112,7 +112,7 @@ void usrp_e_impl::get(const wax::obj &key_, wax::obj &val){
         return;
 
     case DEVICE_PROP_MBOARD:
-        ASSERT_THROW(name == "");
+        UHD_ASSERT_THROW(name == "");
         val = _mboard_proxy->get_link();
         return;
 
@@ -128,6 +128,7 @@ void usrp_e_impl::get(const wax::obj &key_, wax::obj &val){
         val = size_t(_max_num_samples);
         return;
 
+    default: UHD_THROW_PROP_GET_ERROR();
     }
 }
 
@@ -135,7 +136,7 @@ void usrp_e_impl::get(const wax::obj &key_, wax::obj &val){
  * Device Set
  **********************************************************************/
 void usrp_e_impl::set(const wax::obj &, const wax::obj &){
-    throw std::runtime_error("Cannot set in usrp-e device");
+    UHD_THROW_PROP_SET_ERROR();
 }
 
 /***********************************************************************
diff --git a/host/lib/utils.cpp b/host/lib/utils.cpp
new file mode 100644
index 000000000..3a1e5aa3f
--- /dev/null
+++ b/host/lib/utils.cpp
@@ -0,0 +1,44 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/utils/props.hpp>
+
+using namespace uhd;
+
+/***********************************************************************
+ * Props
+ **********************************************************************/
+named_prop_t::named_prop_t(
+    const wax::obj &key_,
+    const std::string &name_
+){
+    key = key_;
+    name = name_;
+}
+
+typedef boost::tuple<wax::obj, std::string> named_prop_tuple;
+
+named_prop_tuple uhd::extract_named_prop(
+    const wax::obj &key,
+    const std::string &name
+){
+    if (key.type() == typeid(named_prop_t)){
+        named_prop_t np = key.as<named_prop_t>();
+        return named_prop_tuple(np.key, np.name);
+    }
+    return named_prop_tuple(key, name);
+}
diff --git a/host/test/addr_test.cpp b/host/test/addr_test.cpp
index 2ec6de14b..93b7cc0df 100644
--- a/host/test/addr_test.cpp
+++ b/host/test/addr_test.cpp
@@ -44,7 +44,7 @@ BOOST_AUTO_TEST_CASE(test_device_addr){
     std::cout << "Pretty Print: " << std::endl << dev_addr.to_string();
     std::string args_str = dev_addr.to_args_str();
     std::cout << "Args String: " << args_str << std::endl;
-    uhd::device_addr_t new_dev_addr = uhd::device_addr_t::from_args_str(args_str);
+    uhd::device_addr_t new_dev_addr(args_str);
 
     //they should be the same size
     BOOST_CHECK_EQUAL(dev_addr.size(), new_dev_addr.size());
diff --git a/host/test/gain_handler_test.cpp b/host/test/gain_handler_test.cpp
index bf2ec5db7..5a9f2b714 100644
--- a/host/test/gain_handler_test.cpp
+++ b/host/test/gain_handler_test.cpp
@@ -72,6 +72,8 @@ private:
         case PROP_GAIN_NAMES:
             val = _gain_values.keys();
             return;
+
+        default: UHD_THROW_PROP_GET_ERROR();
         }
     }
 
@@ -87,9 +89,7 @@ private:
             _gain_values[name] = val.as<float>();
             return;
 
-        case PROP_GAIN_RANGE:
-        case PROP_GAIN_NAMES:
-            throw std::runtime_error("cannot set this property");
+        default: UHD_THROW_PROP_SET_ERROR();
         }
     }
 
diff --git a/host/utils/CMakeLists.txt b/host/utils/CMakeLists.txt
index 0b1e058ef..78970ad0e 100644
--- a/host/utils/CMakeLists.txt
+++ b/host/utils/CMakeLists.txt
@@ -27,4 +27,8 @@ ADD_EXECUTABLE(usrp2_burner usrp2_burner.cpp)
 TARGET_LINK_LIBRARIES(usrp2_burner uhd)
 INSTALL(TARGETS usrp2_burner RUNTIME DESTINATION ${PKG_DATA_DIR}/utils)
 
+ADD_EXECUTABLE(uhd_burn_db_eeprom uhd_burn_db_eeprom.cpp)
+TARGET_LINK_LIBRARIES(uhd_burn_db_eeprom uhd)
+INSTALL(TARGETS uhd_burn_db_eeprom RUNTIME DESTINATION ${PKG_DATA_DIR}/utils)
+
 INSTALL(PROGRAMS usrp2_recovery.py DESTINATION ${PKG_DATA_DIR}/utils)
diff --git a/host/utils/uhd_burn_db_eeprom.cpp b/host/utils/uhd_burn_db_eeprom.cpp
new file mode 100644
index 000000000..c07b43f16
--- /dev/null
+++ b/host/utils/uhd_burn_db_eeprom.cpp
@@ -0,0 +1,105 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+
+#include <uhd/utils/safe_main.hpp>
+#include <uhd/device.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/usrp/dboard_id.hpp>
+#include <uhd/usrp/device_props.hpp>
+#include <uhd/usrp/mboard_props.hpp>
+#include <uhd/usrp/dboard_props.hpp>
+#include <boost/program_options.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/format.hpp>
+#include <boost/assign.hpp>
+#include <iostream>
+#include <sstream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+namespace po = boost::program_options;
+
+//used with lexical cast to parse a hex string
+template <class T> struct to_hex{
+    T value;
+    operator T() const {return value;}
+    friend std::istream& operator>>(std::istream& in, to_hex& out){
+        in >> std::hex >> out.value;
+        return in;
+    }
+};
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+    //command line variables
+    std::string args, db_name, unit;
+    static const uhd::dict<std::string, mboard_prop_t> unit_to_db_prop = boost::assign::map_list_of
+        ("RX", MBOARD_PROP_RX_DBOARD) ("TX", MBOARD_PROP_TX_DBOARD)
+    ;
+
+    po::options_description desc("Allowed options");
+    desc.add_options()
+        ("help", "help message")
+        ("args", po::value<std::string>(&args)->default_value(""),    "device address args [default = \"\"]")
+        ("db",   po::value<std::string>(&db_name)->default_value(""), "dboard name [default = \"\"]")
+        ("unit", po::value<std::string>(&unit)->default_value(""),    "which unit [RX or TX]")
+        ("id",   po::value<std::string>(),                            "dboard id to burn (hex string), omit for readback")
+    ;
+
+    po::variables_map vm;
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    //print the help message
+    if (vm.count("help")){
+        std::cout << boost::format("UHD Burn DB EEPROM %s") % desc << std::endl;
+        std::cout << boost::format(
+            "Omit the id argument to perform readback,\n"
+            "Or specify a new id to burn into the eeprom.\n"
+        ) << std::endl;
+        return ~0;
+    }
+
+    //check inputs
+    if (not unit_to_db_prop.has_key(unit)){
+        std::cout << "Error: specify RX or TX for unit" << std::endl;
+        return ~0;
+    }
+
+    //make the device and extract the dboard w/ property
+    device::sptr dev = device::make(args);
+    wax::obj dboard = (*dev)[DEVICE_PROP_MBOARD][named_prop_t(unit_to_db_prop[unit], db_name)];
+    std::string prefix = (db_name == "")? unit : (unit + ":" + db_name);
+
+    //read the current dboard id from eeprom
+    if (vm.count("id") == 0){
+        std::cout << boost::format("Getting dbid on %s dboard...") % prefix << std::endl;
+        dboard_id_t id = dboard[DBOARD_PROP_DBOARD_ID].as<dboard_id_t>();
+        std::cout << boost::format("  Current dbid: %s") % dboard_id::to_string(id) << std::endl;
+    }
+
+    //write a new dboard id to eeprom
+    else{
+        dboard_id_t id = boost::lexical_cast<to_hex<dboard_id_t> >(vm["id"].as<std::string>());
+        std::cout << boost::format("Setting dbid on %s dboard...") % prefix << std::endl;
+        std::cout << boost::format("  New dbid: %s") % dboard_id::to_string(id) << std::endl;
+        dboard[DBOARD_PROP_DBOARD_ID] = id;
+    }
+
+    std::cout << "  Done" << std::endl << std::endl;
+    return 0;
+}
diff --git a/host/utils/uhd_find_devices.cpp b/host/utils/uhd_find_devices.cpp
index 6c945cbca..8222dc1f4 100644
--- a/host/utils/uhd_find_devices.cpp
+++ b/host/utils/uhd_find_devices.cpp
@@ -27,8 +27,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     po::options_description desc("Allowed options");
     desc.add_options()
         ("help", "help message")
-        ("addr", po::value<std::string>(), "resolvable network address")
-        ("node", po::value<std::string>(), "path to linux device node")
+        ("args", po::value<std::string>()->default_value(""), "device address args")
     ;
 
     po::variables_map vm;
@@ -41,17 +40,8 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         return ~0;
     }
 
-    //load the options into the address
-    uhd::device_addr_t device_addr;
-    if (vm.count("addr")){
-        device_addr["addr"] = vm["addr"].as<std::string>();
-    }
-    if (vm.count("node")){
-        device_addr["node"] = vm["node"].as<std::string>();
-    }
-
     //discover the usrps and print the results
-    uhd::device_addrs_t device_addrs = uhd::device::find(device_addr);
+    uhd::device_addrs_t device_addrs = uhd::device::find(vm["args"].as<std::string>());
 
     if (device_addrs.size() == 0){
         std::cerr << "No UHD Devices Found" << std::endl;