Merge branch 'master' of ettus.sourcerepo.com:ettus/uhdpriv into usrp2p

Conflicts:
	host/lib/usrp/usrp2/CMakeLists.txt
	host/lib/usrp/usrp2/mboard_impl.cpp
	host/lib/usrp/usrp2/usrp2_regs.hpp

17 files changed, 3762 insertions, 0 deletions

diff --git a/host/lib/usrp/usrp1/CMakeLists.txt b/host/lib/usrp/usrp1/CMakeLists.txt
new file mode 100644
index 000000000..67487f99e
--- /dev/null
+++ b/host/lib/usrp/usrp1/CMakeLists.txt
@@ -0,0 +1,65 @@
+#
+# 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/>.
+#
+
+#This file will be included by cmake, use absolute paths!
+
+########################################################################
+# Conditionally configure the USRP1 support
+########################################################################
+MESSAGE(STATUS "Configuring USRP1 support...")
+
+IF(DEFINED ENABLE_USRP1)
+    IF(ENABLE_USRP1)
+        MESSAGE(STATUS "USRP1 support enabled by configure flag")
+    ELSE(ENABLE_USRP1)
+        MESSAGE(STATUS "USRP1 support disabled by configure flag")
+    ENDIF(ENABLE_USRP1)
+ELSE(DEFINED ENABLE_USRP1) #not defined: automatic enabling of component
+    SET(ENABLE_USRP1 ${HAVE_USB_SUPPORT})
+ENDIF(DEFINED ENABLE_USRP1)
+SET(ENABLE_USRP1 ${ENABLE_USRP1} CACHE BOOL "enable USRP1 support")
+
+#sanity check when USRP1 support enabled
+IF(ENABLE_USRP1 AND NOT HAVE_USB_SUPPORT)
+    MESSAGE(FATAL_ERROR "USRP1 support enabled without USB support")
+ENDIF(ENABLE_USRP1 AND NOT HAVE_USB_SUPPORT)
+
+IF(ENABLE_USRP1)
+    MESSAGE(STATUS "  Building USRP1 support.")
+    INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/../firmware/fx2/include)
+
+    LIBUHD_APPEND_SOURCES(
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/clock_ctrl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/clock_ctrl.hpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/codec_ctrl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/codec_ctrl.hpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/codec_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/dboard_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/dboard_iface.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/dsp_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/io_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/mboard_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_iface.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_iface.hpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_impl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_impl.hpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_ctrl.cpp
+        ${CMAKE_SOURCE_DIR}/lib/usrp/usrp1/usrp1_ctrl.hpp
+    )
+ELSE(ENABLE_USRP1)
+    MESSAGE(STATUS "  Skipping USRP1 support.")
+ENDIF(ENABLE_USRP1)
diff --git a/host/lib/usrp/usrp1/clock_ctrl.cpp b/host/lib/usrp/usrp1/clock_ctrl.cpp
new file mode 100644
index 000000000..68c5f5320
--- /dev/null
+++ b/host/lib/usrp/usrp1/clock_ctrl.cpp
@@ -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/>.
+//
+
+#include "clock_ctrl.hpp"
+#include "fpga_regs_standard.h"
+#include <uhd/utils/assert.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/foreach.hpp>
+#include <utility>
+#include <iostream>
+
+using namespace uhd;
+
+/***********************************************************************
+ * Constants
+ **********************************************************************/
+static const double master_clock_rate = 64e6;
+
+/***********************************************************************
+ * Clock Control Implementation
+ **********************************************************************/
+class usrp1_clock_ctrl_impl : public usrp1_clock_ctrl {
+public:
+    usrp1_clock_ctrl_impl(usrp1_iface::sptr iface)
+    {
+        _iface = iface;
+    }
+
+    double get_master_clock_freq(void)
+    {
+        return master_clock_rate; 
+    }
+
+private:
+    usrp1_iface::sptr _iface;
+
+};
+
+/***********************************************************************
+ * Clock Control Make
+ **********************************************************************/
+usrp1_clock_ctrl::sptr usrp1_clock_ctrl::make(usrp1_iface::sptr iface)
+{
+    return sptr(new usrp1_clock_ctrl_impl(iface));
+}
diff --git a/host/lib/usrp/usrp1/clock_ctrl.hpp b/host/lib/usrp/usrp1/clock_ctrl.hpp
new file mode 100644
index 000000000..366869dab
--- /dev/null
+++ b/host/lib/usrp/usrp1/clock_ctrl.hpp
@@ -0,0 +1,50 @@
+//
+// 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_USRP1_CLOCK_CTRL_HPP
+#define INCLUDED_USRP1_CLOCK_CTRL_HPP
+
+#include "usrp1_iface.hpp"
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+#include <vector>
+
+/*!
+ * The usrp1 clock control:
+ * - Setup system clocks.
+ * - Disable/enable clock lines.
+ */
+class usrp1_clock_ctrl : boost::noncopyable{
+public:
+    typedef boost::shared_ptr<usrp1_clock_ctrl> sptr;
+
+    /*!
+     * Make a new clock control object.
+     * \param iface the usrp1 iface object
+     * \return the clock control object
+     */
+    static sptr make(usrp1_iface::sptr iface);
+
+    /*!
+     * Get the rate of the fpga clock line.
+     * \return the fpga clock rate in Hz
+     */
+    virtual double get_master_clock_freq(void) = 0;
+
+};
+
+#endif /* INCLUDED_USRP1_CLOCK_CTRL_HPP */
diff --git a/host/lib/usrp/usrp1/codec_ctrl.cpp b/host/lib/usrp/usrp1/codec_ctrl.cpp
new file mode 100644
index 000000000..08f2d2a8e
--- /dev/null
+++ b/host/lib/usrp/usrp1/codec_ctrl.cpp
@@ -0,0 +1,429 @@
+//
+// 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 "codec_ctrl.hpp"
+#include "usrp_commands.h"
+#include "clock_ctrl.hpp"
+#include "ad9862_regs.hpp"
+#include <uhd/types/dict.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/utils/byteswap.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/format.hpp>
+#include <boost/tuple/tuple.hpp>
+#include <boost/math/special_functions/round.hpp>
+#include <boost/assign/list_of.hpp>
+#include <iostream>
+#include <iomanip>
+
+using namespace uhd;
+
+static const bool codec_debug = false;
+
+const gain_range_t usrp1_codec_ctrl::tx_pga_gain_range(-20, 0, float(0.1));
+const gain_range_t usrp1_codec_ctrl::rx_pga_gain_range(0, 20, 1);
+
+/***********************************************************************
+ * Codec Control Implementation
+ **********************************************************************/
+class usrp1_codec_ctrl_impl : public usrp1_codec_ctrl {
+public:
+    //structors
+    usrp1_codec_ctrl_impl(usrp1_iface::sptr iface,
+                          usrp1_clock_ctrl::sptr clock,
+                          int spi_slave);
+    ~usrp1_codec_ctrl_impl(void);
+
+    //aux adc and dac control
+    float read_aux_adc(aux_adc_t which);
+    void write_aux_dac(aux_dac_t which, float volts);
+
+    //duc control
+    void set_duc_freq(double freq);
+
+    //pga gain control
+    void set_tx_pga_gain(float);
+    float get_tx_pga_gain(void);
+    void set_rx_pga_gain(float, char);
+    float get_rx_pga_gain(char);
+
+private:
+    usrp1_iface::sptr _iface;
+    usrp1_clock_ctrl::sptr _clock_ctrl;
+    int _spi_slave;
+    ad9862_regs_t _ad9862_regs;
+    aux_adc_t _last_aux_adc_a, _last_aux_adc_b;
+    void send_reg(boost::uint8_t addr);
+    void recv_reg(boost::uint8_t addr);
+
+    double coarse_tune(double codec_rate, double freq);
+    double fine_tune(double codec_rate, double freq);
+};
+
+/***********************************************************************
+ * Codec Control Structors
+ **********************************************************************/
+usrp1_codec_ctrl_impl::usrp1_codec_ctrl_impl(usrp1_iface::sptr iface,
+                                             usrp1_clock_ctrl::sptr clock,
+                                             int spi_slave)
+{
+    _iface = iface;
+    _clock_ctrl = clock;
+    _spi_slave = spi_slave;
+
+    //soft reset
+    _ad9862_regs.soft_reset = 1;
+    this->send_reg(0);
+
+    //initialize the codec register settings
+    _ad9862_regs.sdio_bidir = ad9862_regs_t::SDIO_BIDIR_SDIO_SDO;
+    _ad9862_regs.lsb_first = ad9862_regs_t::LSB_FIRST_MSB;
+    _ad9862_regs.soft_reset = 0;
+
+    //setup rx side of codec
+    _ad9862_regs.byp_buffer_a = 1;
+    _ad9862_regs.byp_buffer_b = 1;
+    _ad9862_regs.buffer_a_pd = 1;
+    _ad9862_regs.buffer_b_pd = 1;
+    _ad9862_regs.rx_pga_a = 0;
+    _ad9862_regs.rx_pga_b = 0;
+    _ad9862_regs.rx_twos_comp = 1;
+    _ad9862_regs.rx_hilbert = ad9862_regs_t::RX_HILBERT_DIS;
+
+    //setup tx side of codec
+    _ad9862_regs.two_data_paths = ad9862_regs_t::TWO_DATA_PATHS_BOTH;
+    _ad9862_regs.interleaved = ad9862_regs_t::INTERLEAVED_INTERLEAVED;
+    _ad9862_regs.tx_pga_gain = 199;
+    _ad9862_regs.tx_hilbert = ad9862_regs_t::TX_HILBERT_DIS;
+    _ad9862_regs.interp = ad9862_regs_t::INTERP_4;
+    _ad9862_regs.tx_twos_comp = 1;
+    _ad9862_regs.fine_mode = ad9862_regs_t::FINE_MODE_NCO;
+    _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_BYPASS;
+    _ad9862_regs.dac_a_coarse_gain = 0x3;
+    _ad9862_regs.dac_b_coarse_gain = 0x3;
+
+    //setup the dll
+    _ad9862_regs.input_clk_ctrl = ad9862_regs_t::INPUT_CLK_CTRL_EXTERNAL;
+    _ad9862_regs.dll_mult = ad9862_regs_t::DLL_MULT_2;
+    _ad9862_regs.dll_mode = ad9862_regs_t::DLL_MODE_FAST;
+
+    //setup clockout
+    _ad9862_regs.clkout2_div_factor = ad9862_regs_t::CLKOUT2_DIV_FACTOR_2;
+
+    //write the register settings to the codec
+    for (uint8_t addr = 0; addr <= 25; addr++) {
+        this->send_reg(addr);
+    }
+
+    //aux adc clock
+    _ad9862_regs.clk_4 = ad9862_regs_t::CLK_4_1_4;
+    this->send_reg(34);
+}
+
+usrp1_codec_ctrl_impl::~usrp1_codec_ctrl_impl(void)
+{
+    //set aux dacs to zero
+    this->write_aux_dac(AUX_DAC_A, 0);
+    this->write_aux_dac(AUX_DAC_B, 0);
+    this->write_aux_dac(AUX_DAC_C, 0);
+    this->write_aux_dac(AUX_DAC_D, 0);
+
+    //power down
+    _ad9862_regs.all_rx_pd = 1;
+    this->send_reg(1);
+    _ad9862_regs.tx_digital_pd = 1;
+    _ad9862_regs.tx_analog_pd = ad9862_regs_t::TX_ANALOG_PD_BOTH;
+    this->send_reg(8);
+}
+
+/***********************************************************************
+ * Codec Control Gain Control Methods
+ **********************************************************************/
+static const int mtpgw = 255; //maximum tx pga gain word
+
+void usrp1_codec_ctrl_impl::set_tx_pga_gain(float gain){
+    int gain_word = int(mtpgw*(gain - tx_pga_gain_range.min)/(tx_pga_gain_range.max - tx_pga_gain_range.min));
+    _ad9862_regs.tx_pga_gain = std::clip(gain_word, 0, mtpgw);
+    this->send_reg(16);
+}
+
+float usrp1_codec_ctrl_impl::get_tx_pga_gain(void){
+    return (_ad9862_regs.tx_pga_gain*(tx_pga_gain_range.max - tx_pga_gain_range.min)/mtpgw) + tx_pga_gain_range.min;
+}
+
+static const int mrpgw = 0x14; //maximum rx pga gain word
+
+void usrp1_codec_ctrl_impl::set_rx_pga_gain(float gain, char which){
+    int gain_word = int(mrpgw*(gain - rx_pga_gain_range.min)/(rx_pga_gain_range.max - rx_pga_gain_range.min));
+    gain_word = std::clip(gain_word, 0, mrpgw);
+    switch(which){
+    case 'A':
+        _ad9862_regs.rx_pga_a = gain_word;
+        this->send_reg(2);
+        return;
+    case 'B':
+        _ad9862_regs.rx_pga_b = gain_word;
+        this->send_reg(3);
+        return;
+    default: UHD_THROW_INVALID_CODE_PATH();
+    }
+}
+
+float usrp1_codec_ctrl_impl::get_rx_pga_gain(char which){
+    int gain_word;
+    switch(which){
+    case 'A': gain_word = _ad9862_regs.rx_pga_a; break;
+    case 'B': gain_word = _ad9862_regs.rx_pga_b; break;
+    default: UHD_THROW_INVALID_CODE_PATH();
+    }
+    return (gain_word*(rx_pga_gain_range.max - rx_pga_gain_range.min)/mrpgw) + rx_pga_gain_range.min;
+}
+
+/***********************************************************************
+ * Codec Control AUX ADC Methods
+ **********************************************************************/
+static float aux_adc_to_volts(boost::uint8_t high, boost::uint8_t low)
+{
+    return float((boost::uint16_t(high) << 2) | low)*3.3/0x3ff;
+}
+
+float usrp1_codec_ctrl_impl::read_aux_adc(aux_adc_t which)
+{
+    //check to see if the switch needs to be set
+    bool write_switch = false;
+    switch(which) {
+
+    case AUX_ADC_A1:
+    case AUX_ADC_A2:
+        if (which != _last_aux_adc_a) {
+            _ad9862_regs.select_a = (which == AUX_ADC_A1)?
+                ad9862_regs_t::SELECT_A_AUX_ADC1: ad9862_regs_t::SELECT_A_AUX_ADC2;
+            _last_aux_adc_a = which;
+            write_switch = true;
+        }
+        break;
+
+    case AUX_ADC_B1:
+    case AUX_ADC_B2:
+        if (which != _last_aux_adc_b) {
+            _ad9862_regs.select_b = (which == AUX_ADC_B1)?
+                ad9862_regs_t::SELECT_B_AUX_ADC1: ad9862_regs_t::SELECT_B_AUX_ADC2;
+            _last_aux_adc_b = which;
+            write_switch = true;
+        }
+        break;
+
+    }
+
+    //write the switch if it changed
+    if(write_switch) this->send_reg(34);
+
+    //map aux adcs to register values to read
+    static const uhd::dict<aux_adc_t, boost::uint8_t> aux_dac_to_addr = boost::assign::map_list_of
+        (AUX_ADC_A2, 26) (AUX_ADC_A1, 28)
+        (AUX_ADC_B2, 30) (AUX_ADC_B1, 32)
+    ;
+
+    //read the value
+    this->recv_reg(aux_dac_to_addr[which]+0);
+    this->recv_reg(aux_dac_to_addr[which]+1);
+
+    //return the value scaled to volts
+    switch(which) {
+    case AUX_ADC_A1: return aux_adc_to_volts(_ad9862_regs.aux_adc_a1_9_2, _ad9862_regs.aux_adc_a1_1_0);
+    case AUX_ADC_A2: return aux_adc_to_volts(_ad9862_regs.aux_adc_a2_9_2, _ad9862_regs.aux_adc_a2_1_0);
+    case AUX_ADC_B1: return aux_adc_to_volts(_ad9862_regs.aux_adc_b1_9_2, _ad9862_regs.aux_adc_b1_1_0);
+    case AUX_ADC_B2: return aux_adc_to_volts(_ad9862_regs.aux_adc_b2_9_2, _ad9862_regs.aux_adc_b2_1_0);
+    }
+    UHD_ASSERT_THROW(false);
+}
+
+/***********************************************************************
+ * Codec Control AUX DAC Methods
+ **********************************************************************/
+void usrp1_codec_ctrl_impl::write_aux_dac(aux_dac_t which, float volts)
+{
+    //special case for aux dac d (aka sigma delta word)
+    if (which == AUX_DAC_D) {
+        boost::uint16_t dac_word = std::clip(boost::math::iround(volts*0xfff/3.3), 0, 0xfff);
+        _ad9862_regs.sig_delt_11_4 = boost::uint8_t(dac_word >> 4);
+        _ad9862_regs.sig_delt_3_0 = boost::uint8_t(dac_word & 0xf);
+        this->send_reg(42);
+        this->send_reg(43);
+        return;
+    }
+
+    //calculate the dac word for aux dac a, b, c
+    boost::uint8_t dac_word = std::clip(boost::math::iround(volts*0xff/3.3), 0, 0xff);
+
+    //setup a lookup table for the aux dac params (reg ref, reg addr)
+    typedef boost::tuple<boost::uint8_t*, boost::uint8_t> dac_params_t;
+    uhd::dict<aux_dac_t, dac_params_t> aux_dac_to_params = boost::assign::map_list_of
+        (AUX_DAC_A, dac_params_t(&_ad9862_regs.aux_dac_a, 36))
+        (AUX_DAC_B, dac_params_t(&_ad9862_regs.aux_dac_b, 37))
+        (AUX_DAC_C, dac_params_t(&_ad9862_regs.aux_dac_c, 38))
+    ;
+
+    //set the aux dac register
+    UHD_ASSERT_THROW(aux_dac_to_params.has_key(which));
+    boost::uint8_t *reg_ref, reg_addr;
+    boost::tie(reg_ref, reg_addr) = aux_dac_to_params[which];
+    *reg_ref = dac_word;
+    this->send_reg(reg_addr);
+}
+
+/***********************************************************************
+ * Codec Control SPI Methods
+ **********************************************************************/
+void usrp1_codec_ctrl_impl::send_reg(boost::uint8_t addr)
+{
+    boost::uint32_t reg = _ad9862_regs.get_write_reg(addr);
+
+    if (codec_debug) {
+        std::cout.fill('0');
+        std::cout << "codec control write reg: 0x";
+        std::cout << std::setw(8) << std::hex << reg << std::endl;
+    }
+    _iface->transact_spi(_spi_slave,
+                         spi_config_t::EDGE_RISE, reg, 16, false);
+}
+
+void usrp1_codec_ctrl_impl::recv_reg(boost::uint8_t addr)
+{
+    boost::uint32_t reg = _ad9862_regs.get_read_reg(addr);
+
+    if (codec_debug) {
+        std::cout.fill('0');
+        std::cout << "codec control read reg: 0x";
+        std::cout << std::setw(8) << std::hex << reg << std::endl;
+    }
+
+    boost::uint32_t ret = _iface->transact_spi(_spi_slave,
+                                        spi_config_t::EDGE_RISE, reg, 16, true);
+
+    if (codec_debug) {
+        std::cout.fill('0');
+        std::cout << "codec control read ret: 0x";
+        std::cout << std::setw(8) << std::hex << ret << std::endl;
+    }
+
+    _ad9862_regs.set_reg(addr, boost::uint16_t(ret));
+}
+
+/***********************************************************************
+ * DUC tuning 
+ **********************************************************************/
+double usrp1_codec_ctrl_impl::coarse_tune(double codec_rate, double freq)
+{
+    double coarse_freq;
+
+    double coarse_freq_1 = codec_rate / 8;
+    double coarse_freq_2 = codec_rate / 4;
+    double coarse_limit_1 = coarse_freq_1 / 2;
+    double coarse_limit_2 = (coarse_freq_1 + coarse_freq_2) / 2;
+    double max_freq = coarse_freq_2 + .09375 * codec_rate;
+ 
+    if (freq < -max_freq) {
+        return false;
+    }
+    else if (freq < -coarse_limit_2) {
+        _ad9862_regs.neg_coarse_tune = ad9862_regs_t::NEG_COARSE_TUNE_NEG_SHIFT;
+        _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_FDAC_4;
+        coarse_freq = -coarse_freq_2;
+    }
+    else if (freq < -coarse_limit_1) {
+        _ad9862_regs.neg_coarse_tune = ad9862_regs_t::NEG_COARSE_TUNE_NEG_SHIFT;
+        _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_FDAC_8;
+        coarse_freq = -coarse_freq_1;
+    }
+    else if (freq < coarse_limit_1) {
+        _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_BYPASS;
+        coarse_freq = 0; 
+    }
+    else if (freq < coarse_limit_2) {
+        _ad9862_regs.neg_coarse_tune = ad9862_regs_t::NEG_COARSE_TUNE_POS_SHIFT;
+        _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_FDAC_8;
+        coarse_freq = coarse_freq_1;
+    }
+    else if (freq <= max_freq) {
+        _ad9862_regs.neg_coarse_tune = ad9862_regs_t::NEG_COARSE_TUNE_POS_SHIFT;
+        _ad9862_regs.coarse_mod = ad9862_regs_t::COARSE_MOD_FDAC_4;
+        coarse_freq = coarse_freq_2;
+    }
+    else {
+        return 0; 
+    }
+
+    return coarse_freq;
+}
+
+double usrp1_codec_ctrl_impl::fine_tune(double codec_rate, double target_freq)
+{
+    static const double scale_factor = std::pow(2.0, 24);
+
+    boost::uint32_t freq_word = boost::uint32_t(
+        boost::math::round(abs((target_freq / codec_rate) * scale_factor)));
+
+    double actual_freq = freq_word * codec_rate / scale_factor;
+
+    if (target_freq < 0) {
+        _ad9862_regs.neg_fine_tune = ad9862_regs_t::NEG_FINE_TUNE_NEG_SHIFT;
+        actual_freq = -actual_freq; 
+    }
+    else {
+        _ad9862_regs.neg_fine_tune = ad9862_regs_t::NEG_FINE_TUNE_POS_SHIFT;
+    } 
+
+    _ad9862_regs.fine_mode = ad9862_regs_t::FINE_MODE_NCO;
+    _ad9862_regs.ftw_23_16 = (freq_word >> 16) & 0xff;
+    _ad9862_regs.ftw_15_8  = (freq_word >>  8) & 0xff;
+    _ad9862_regs.ftw_7_0   = (freq_word >>  0) & 0xff;
+
+    return actual_freq;
+}
+
+void usrp1_codec_ctrl_impl::set_duc_freq(double freq)
+{
+    double codec_rate = _clock_ctrl->get_master_clock_freq() * 2;
+    double coarse_freq = coarse_tune(codec_rate, freq);
+    double fine_freq = fine_tune(codec_rate / 4, freq - coarse_freq);
+
+    if (codec_debug) {
+        std::cout << "ad9862 tuning result:" << std::endl;
+        std::cout << "   requested:   " << freq << std::endl;
+        std::cout << "   actual:      " << coarse_freq + fine_freq << std::endl;
+        std::cout << "   coarse freq: " << coarse_freq << std::endl;
+        std::cout << "   fine freq:   " << fine_freq << std::endl;
+        std::cout << "   codec rate:  " << codec_rate << std::endl;
+    }    
+
+    this->send_reg(20);
+    this->send_reg(21);
+    this->send_reg(22);
+    this->send_reg(23);
+}
+
+/***********************************************************************
+ * Codec Control Make
+ **********************************************************************/
+usrp1_codec_ctrl::sptr usrp1_codec_ctrl::make(usrp1_iface::sptr iface,
+                                              usrp1_clock_ctrl::sptr clock,
+                                              int spi_slave)
+{
+    return sptr(new usrp1_codec_ctrl_impl(iface, clock, spi_slave));
+}
diff --git a/host/lib/usrp/usrp1/codec_ctrl.hpp b/host/lib/usrp/usrp1/codec_ctrl.hpp
new file mode 100644
index 000000000..259d10ef4
--- /dev/null
+++ b/host/lib/usrp/usrp1/codec_ctrl.hpp
@@ -0,0 +1,97 @@
+//
+// 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_USRP1_CODEC_CTRL_HPP
+#define INCLUDED_USRP1_CODEC_CTRL_HPP
+
+#include "usrp1_iface.hpp"
+#include "clock_ctrl.hpp"
+#include <uhd/types/ranges.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+
+/*!
+ * The usrp1 codec control:
+ * - Init/power down codec.
+ * - Read aux adc, write aux dac.
+ */
+class usrp1_codec_ctrl : boost::noncopyable{
+public:
+    typedef boost::shared_ptr<usrp1_codec_ctrl> sptr;
+
+    static const uhd::gain_range_t tx_pga_gain_range;
+    static const uhd::gain_range_t rx_pga_gain_range;
+
+    /*!
+     * Make a new clock control object.
+     * \param iface the usrp1 iface object
+     * \param spi_slave which spi device
+     * \return the clock control object
+     */
+    static sptr make(usrp1_iface::sptr iface,
+        usrp1_clock_ctrl::sptr clock, int spi_slave
+    );
+
+    //! aux adc identifier constants
+    enum aux_adc_t{
+        AUX_ADC_A2 = 0xA2,
+        AUX_ADC_A1 = 0xA1,
+        AUX_ADC_B2 = 0xB2,
+        AUX_ADC_B1 = 0xB1
+    };
+
+    /*!
+     * Read an auxiliary adc:
+     * The internals remember which aux adc was read last.
+     * Therefore, the aux adc switch is only changed as needed.
+     * \param which which of the 4 adcs
+     * \return a value in volts
+     */
+    virtual float read_aux_adc(aux_adc_t which) = 0;
+
+    //! aux dac identifier constants
+    enum aux_dac_t{
+        AUX_DAC_A = 0xA,
+        AUX_DAC_B = 0xB,
+        AUX_DAC_C = 0xC,
+        AUX_DAC_D = 0xD
+    };
+
+    /*!
+     * Write an auxiliary dac.
+     * \param which which of the 4 dacs
+     * \param volts the level in in volts
+     */
+    virtual void write_aux_dac(aux_dac_t which, float volts) = 0;
+
+    //! Set the TX PGA gain
+    virtual void set_tx_pga_gain(float gain) = 0;
+
+    //! Get the TX PGA gain
+    virtual float get_tx_pga_gain(void) = 0;
+
+    //! Set the RX PGA gain ('A' or 'B')
+    virtual void set_rx_pga_gain(float gain, char which) = 0;
+
+    //! Get the RX PGA gain ('A' or 'B')
+    virtual float get_rx_pga_gain(char which) = 0;
+
+    //! Set the TX modulator frequency
+    virtual void set_duc_freq(double freq) = 0;
+};
+
+#endif /* INCLUDED_USRP1_CODEC_CTRL_HPP */
diff --git a/host/lib/usrp/usrp1/codec_impl.cpp b/host/lib/usrp/usrp1/codec_impl.cpp
new file mode 100644
index 000000000..1756c1ed4
--- /dev/null
+++ b/host/lib/usrp/usrp1/codec_impl.cpp
@@ -0,0 +1,157 @@
+//
+// 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 "usrp1_impl.hpp"
+#include <uhd/utils/assert.hpp>
+#include <uhd/usrp/codec_props.hpp>
+#include <boost/bind.hpp>
+#include <boost/foreach.hpp>
+#include <boost/format.hpp>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Helper Methods
+ **********************************************************************/
+void usrp1_impl::codec_init(void)
+{
+    //make proxies
+    BOOST_FOREACH(dboard_slot_t dboard_slot, _dboard_slots){
+        _rx_codec_proxies[dboard_slot] = wax_obj_proxy::make(
+              boost::bind(&usrp1_impl::rx_codec_get, this, _1, _2, dboard_slot),
+              boost::bind(&usrp1_impl::rx_codec_set, this, _1, _2, dboard_slot));
+
+        _tx_codec_proxies[dboard_slot] = wax_obj_proxy::make(
+              boost::bind(&usrp1_impl::tx_codec_get, this, _1, _2, dboard_slot),
+              boost::bind(&usrp1_impl::tx_codec_set, this, _1, _2, dboard_slot));
+    }
+}    
+
+/***********************************************************************
+ * RX Codec Properties
+ **********************************************************************/
+static const std::string ad9862_pga_gain_name = "ad9862 pga";
+
+void usrp1_impl::rx_codec_get(const wax::obj &key_, wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<codec_prop_t>()) {
+    case CODEC_PROP_NAME:
+        val = str(boost::format("usrp1 adc - ad9862 - slot %c") % char(dboard_slot));
+        return;
+
+    case CODEC_PROP_OTHERS:
+        val = prop_names_t();
+        return;
+
+    case CODEC_PROP_GAIN_NAMES:
+        val = prop_names_t(1, ad9862_pga_gain_name);
+        return;
+
+    case CODEC_PROP_GAIN_RANGE:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        val = usrp1_codec_ctrl::rx_pga_gain_range;
+        return;
+
+    case CODEC_PROP_GAIN_I:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        val = _codec_ctrls[dboard_slot]->get_rx_pga_gain('A');
+        return;
+
+    case CODEC_PROP_GAIN_Q:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        val = _codec_ctrls[dboard_slot]->get_rx_pga_gain('B');
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+void usrp1_impl::rx_codec_set(const wax::obj &key_, const wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the set request conditioned on the key
+    switch(key.as<codec_prop_t>()) {
+    case CODEC_PROP_GAIN_I:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        _codec_ctrls[dboard_slot]->set_rx_pga_gain(val.as<float>(), 'A');
+        return;
+
+    case CODEC_PROP_GAIN_Q:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        _codec_ctrls[dboard_slot]->set_rx_pga_gain(val.as<float>(), 'B');
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * TX Codec Properties
+ **********************************************************************/
+void usrp1_impl::tx_codec_get(const wax::obj &key_, wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<codec_prop_t>()) {
+    case CODEC_PROP_NAME:
+        val = str(boost::format("usrp1 dac - ad9862 - slot %c") % char(dboard_slot));
+        return;
+
+    case CODEC_PROP_OTHERS:
+        val = prop_names_t();
+        return;
+
+    case CODEC_PROP_GAIN_NAMES:
+        val = prop_names_t(1, ad9862_pga_gain_name);
+        return;
+
+    case CODEC_PROP_GAIN_RANGE:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        val = usrp1_codec_ctrl::tx_pga_gain_range;
+        return;
+
+    case CODEC_PROP_GAIN_I: //only one gain for I and Q
+    case CODEC_PROP_GAIN_Q:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        val = _codec_ctrls[dboard_slot]->get_tx_pga_gain();
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+void usrp1_impl::tx_codec_set(const wax::obj &key_, const wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the set request conditioned on the key
+    switch(key.as<codec_prop_t>()){
+    case CODEC_PROP_GAIN_I: //only one gain for I and Q
+    case CODEC_PROP_GAIN_Q:
+        UHD_ASSERT_THROW(key.name == ad9862_pga_gain_name);
+        _codec_ctrls[dboard_slot]->set_tx_pga_gain(val.as<float>());
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
diff --git a/host/lib/usrp/usrp1/dboard_iface.cpp b/host/lib/usrp/usrp1/dboard_iface.cpp
new file mode 100644
index 000000000..4791b55ce
--- /dev/null
+++ b/host/lib/usrp/usrp1/dboard_iface.cpp
@@ -0,0 +1,371 @@
+//
+// 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 "usrp1_iface.hpp"
+#include "usrp1_impl.hpp"
+#include "fpga_regs_common.h"
+#include "usrp_spi_defs.h"
+#include "fpga_regs_standard.h"
+#include "clock_ctrl.hpp"
+#include "codec_ctrl.hpp"
+#include <uhd/usrp/dboard_iface.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/utils/assert.hpp>
+#include <boost/assign/list_of.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace boost::assign;
+
+class usrp1_dboard_iface : public dboard_iface {
+public:
+
+    usrp1_dboard_iface(usrp1_iface::sptr iface,
+                       usrp1_clock_ctrl::sptr clock,
+                       usrp1_codec_ctrl::sptr codec,
+                       usrp1_impl::dboard_slot_t dboard_slot,
+                       const dboard_id_t &rx_dboard_id
+    ):
+        _dboard_slot(dboard_slot),
+        _rx_dboard_id(rx_dboard_id)
+    {
+        _iface = iface;
+        _clock = clock;
+        _codec = codec;
+
+        //init the clock rate shadows
+        this->set_clock_rate(UNIT_RX, this->get_clock_rates(UNIT_RX).front());
+        this->set_clock_rate(UNIT_TX, this->get_clock_rates(UNIT_TX).front());
+    }
+
+    ~usrp1_dboard_iface()
+    {
+        /* NOP */
+    }
+
+    special_props_t get_special_props()
+    {
+        special_props_t props;
+        props.soft_clock_divider = true;
+        props.mangle_i2c_addrs = (_dboard_slot == usrp1_impl::DBOARD_SLOT_B);
+        return props;
+    }
+
+    void write_aux_dac(unit_t, aux_dac_t, float);
+    float read_aux_adc(unit_t, aux_adc_t);
+
+    void set_pin_ctrl(unit_t, boost::uint16_t);
+    void set_atr_reg(unit_t, atr_reg_t, boost::uint16_t);
+    void set_gpio_ddr(unit_t, boost::uint16_t);
+    void write_gpio(unit_t, boost::uint16_t);
+    void set_gpio_debug(unit_t, int);
+    boost::uint16_t read_gpio(unit_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,
+                   const spi_config_t &config,
+                   boost::uint32_t data,
+                   size_t num_bits);
+
+    boost::uint32_t read_write_spi(unit_t unit,
+                                   const spi_config_t &config,
+                                   boost::uint32_t data,
+                                   size_t num_bits);
+
+    void set_clock_rate(unit_t, double);
+    std::vector<double> get_clock_rates(unit_t);
+    double get_clock_rate(unit_t);
+    void set_clock_enabled(unit_t, bool);
+
+private:
+    usrp1_iface::sptr _iface;
+    usrp1_clock_ctrl::sptr _clock;
+    usrp1_codec_ctrl::sptr _codec;
+    uhd::dict<unit_t, double> _clock_rates;
+    const usrp1_impl::dboard_slot_t _dboard_slot;
+    const dboard_id_t &_rx_dboard_id;
+};
+
+/***********************************************************************
+ * Make Function
+ **********************************************************************/
+dboard_iface::sptr usrp1_impl::make_dboard_iface(usrp1_iface::sptr iface,
+                                           usrp1_clock_ctrl::sptr clock,
+                                           usrp1_codec_ctrl::sptr codec,
+                                           dboard_slot_t dboard_slot,
+                                           const dboard_id_t &rx_dboard_id
+){
+    return dboard_iface::sptr(new usrp1_dboard_iface(
+        iface, clock, codec, dboard_slot, rx_dboard_id
+    ));
+}
+
+/***********************************************************************
+ * Clock Rates
+ **********************************************************************/
+static const dboard_id_t dbsrx_classic_id(0x0002);
+
+/*
+ * Daughterboard reference clock register
+ *
+ * Bit  7    - 1 turns on refclk, 0 allows IO use
+ * Bits 6:0  - Divider value
+ */
+void usrp1_dboard_iface::set_clock_rate(unit_t unit, double rate)
+{
+    assert_has(this->get_clock_rates(unit), rate, "dboard clock rate");
+    _clock_rates[unit] = rate;
+
+    if (unit == UNIT_RX && _rx_dboard_id == dbsrx_classic_id){
+        size_t divider = size_t(_clock->get_master_clock_freq()/rate);
+        switch(_dboard_slot){
+        case usrp1_impl::DBOARD_SLOT_A:
+            _iface->poke32(FR_RX_A_REFCLK, (divider & 0x7f) | 0x80);
+            break;
+
+        case usrp1_impl::DBOARD_SLOT_B:
+            _iface->poke32(FR_RX_B_REFCLK, (divider & 0x7f) | 0x80);
+            break;
+        }
+    }
+}
+
+std::vector<double> usrp1_dboard_iface::get_clock_rates(unit_t unit)
+{
+    std::vector<double> rates;
+    if (unit == UNIT_RX && _rx_dboard_id == dbsrx_classic_id){
+        for (size_t div = 1; div <= 127; div++)
+            rates.push_back(_clock->get_master_clock_freq() / div);
+    }
+    else{
+        rates.push_back(_clock->get_master_clock_freq());
+    }
+    return rates;
+}
+
+double usrp1_dboard_iface::get_clock_rate(unit_t unit)
+{
+    return _clock_rates[unit];
+}
+
+void usrp1_dboard_iface::set_clock_enabled(unit_t, bool)
+{
+    //TODO we can only enable for special case anyway...
+}
+
+/***********************************************************************
+ * GPIO
+ **********************************************************************/
+void usrp1_dboard_iface::set_pin_ctrl(unit_t unit, boost::uint16_t value)
+{
+    switch(unit) {
+    case UNIT_RX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+             _iface->poke32(FR_ATR_MASK_1, value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+             _iface->poke32(FR_ATR_MASK_3, value);
+        break;
+    case UNIT_TX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_ATR_MASK_0, value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_ATR_MASK_2, value);
+        break;
+    }
+}
+
+void usrp1_dboard_iface::set_gpio_ddr(unit_t unit, boost::uint16_t value)
+{
+    switch(unit) {
+    case UNIT_RX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_OE_1, 0xffff0000 | value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_OE_3, 0xffff0000 | value);
+        break;
+    case UNIT_TX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_OE_0, 0xffff0000 | value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_OE_2, 0xffff0000 | value);
+        break;
+    }
+}
+
+void usrp1_dboard_iface::write_gpio(unit_t unit, boost::uint16_t value)
+{
+    switch(unit) {
+    case UNIT_RX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_IO_1, 0xffff0000 | value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_IO_3, 0xffff0000 | value);
+        break;
+    case UNIT_TX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_IO_0, 0xffff0000 | value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_IO_2, 0xffff0000 | value);
+        break;
+    }
+}
+
+void usrp1_dboard_iface::set_gpio_debug(unit_t, int)
+{
+    /* NOP */
+}
+
+boost::uint16_t usrp1_dboard_iface::read_gpio(unit_t unit)
+{
+    boost::uint32_t out_value;
+
+    if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+        out_value = _iface->peek32(1);
+    else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+        out_value = _iface->peek32(2);
+    else
+        UHD_THROW_INVALID_CODE_PATH();
+
+    switch(unit) {
+    case UNIT_RX:
+        return (boost::uint16_t)((out_value >> 16) & 0x0000ffff);
+    case UNIT_TX:
+        return (boost::uint16_t)((out_value >>  0) & 0x0000ffff);
+    }
+    UHD_ASSERT_THROW(false);
+}
+
+void usrp1_dboard_iface::set_atr_reg(unit_t unit,
+                                     atr_reg_t atr, boost::uint16_t value)
+{
+    // Ignore unsupported states
+    if ((atr == ATR_REG_IDLE) || (atr == ATR_REG_FULL_DUPLEX))
+        return;
+
+    switch(unit) {
+    case UNIT_RX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_ATR_RXVAL_1, value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_ATR_RXVAL_3, value);
+        break;
+    case UNIT_TX:
+        if (_dboard_slot == usrp1_impl::DBOARD_SLOT_A)
+            _iface->poke32(FR_ATR_TXVAL_0, value);
+        else if (_dboard_slot == usrp1_impl::DBOARD_SLOT_B)
+            _iface->poke32(FR_ATR_TXVAL_2, value);
+        break;
+    }
+}
+/***********************************************************************
+ * SPI
+ **********************************************************************/
+/*!
+ * Static function to convert a unit type to a spi slave device number.
+ * \param unit the dboard interface unit type enum
+ * \param slot the side (A or B) the dboard is attached
+ * \return the slave device number
+ */
+static boost::uint32_t unit_to_otw_spi_dev(dboard_iface::unit_t unit,
+                                           usrp1_impl::dboard_slot_t slot)
+{
+    switch(unit) {
+    case dboard_iface::UNIT_TX:
+        if (slot == usrp1_impl::DBOARD_SLOT_A)
+            return SPI_ENABLE_TX_A;
+        else if (slot == usrp1_impl::DBOARD_SLOT_B)
+            return SPI_ENABLE_TX_B;
+        else
+            break;
+    case dboard_iface::UNIT_RX:
+        if (slot == usrp1_impl::DBOARD_SLOT_A)
+            return SPI_ENABLE_RX_A;
+        else if (slot == usrp1_impl::DBOARD_SLOT_B)
+            return SPI_ENABLE_RX_B;
+        else
+            break;
+    }
+    throw std::invalid_argument("unknown unit type");
+}
+
+void usrp1_dboard_iface::write_spi(unit_t unit,
+                                   const spi_config_t &config,
+                                   boost::uint32_t data,
+                                   size_t num_bits)
+{
+    _iface->transact_spi(unit_to_otw_spi_dev(unit, _dboard_slot),
+                         config, data, num_bits, false);
+}
+
+boost::uint32_t usrp1_dboard_iface::read_write_spi(unit_t unit,
+                                                   const spi_config_t &config,
+                                                   boost::uint32_t data,
+                                                   size_t num_bits)
+{
+    return _iface->transact_spi(unit_to_otw_spi_dev(unit, _dboard_slot),
+                                config, data, num_bits, true);
+}
+
+/***********************************************************************
+ * I2C
+ **********************************************************************/
+void usrp1_dboard_iface::write_i2c(boost::uint8_t addr,
+                                   const byte_vector_t &bytes)
+{
+    return _iface->write_i2c(addr, bytes);
+}
+
+byte_vector_t usrp1_dboard_iface::read_i2c(boost::uint8_t addr,
+                                           size_t num_bytes)
+{
+    return _iface->read_i2c(addr, num_bytes);
+}
+
+/***********************************************************************
+ * Aux DAX/ADC
+ **********************************************************************/
+void usrp1_dboard_iface::write_aux_dac(dboard_iface::unit_t,
+                                       aux_dac_t which, float value)
+{
+    //same aux dacs for each unit
+    static const uhd::dict<aux_dac_t, usrp1_codec_ctrl::aux_dac_t>
+        which_to_aux_dac = map_list_of
+                                     (AUX_DAC_A, usrp1_codec_ctrl::AUX_DAC_A)
+                                     (AUX_DAC_B, usrp1_codec_ctrl::AUX_DAC_B)
+                                     (AUX_DAC_C, usrp1_codec_ctrl::AUX_DAC_C)
+                                     (AUX_DAC_D, usrp1_codec_ctrl::AUX_DAC_D);
+
+    _codec->write_aux_dac(which_to_aux_dac[which], value);
+}
+
+float usrp1_dboard_iface::read_aux_adc(dboard_iface::unit_t unit,
+                                       aux_adc_t which)
+{
+    static const
+    uhd::dict<unit_t, uhd::dict<aux_adc_t, usrp1_codec_ctrl::aux_adc_t> >
+        unit_to_which_to_aux_adc = map_list_of(UNIT_RX, map_list_of
+                                    (AUX_ADC_A, usrp1_codec_ctrl::AUX_ADC_A1)
+                                    (AUX_ADC_B, usrp1_codec_ctrl::AUX_ADC_B1))
+                                              (UNIT_TX, map_list_of
+                                    (AUX_ADC_A, usrp1_codec_ctrl::AUX_ADC_A2)
+                                    (AUX_ADC_B, usrp1_codec_ctrl::AUX_ADC_B2));
+
+    return _codec->read_aux_adc(unit_to_which_to_aux_adc[unit][which]);
+}
diff --git a/host/lib/usrp/usrp1/dboard_impl.cpp b/host/lib/usrp/usrp1/dboard_impl.cpp
new file mode 100644
index 000000000..3a8480e1b
--- /dev/null
+++ b/host/lib/usrp/usrp1/dboard_impl.cpp
@@ -0,0 +1,217 @@
+//
+// 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 "usrp1_impl.hpp"
+#include "usrp_i2c_addr.h"
+#include <uhd/usrp/dsp_utils.hpp>
+#include <uhd/usrp/misc_utils.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/usrp/dboard_props.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <boost/bind.hpp>
+#include <boost/foreach.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Helper Functions
+ **********************************************************************/
+static boost::uint8_t get_rx_ee_addr(usrp1_impl::dboard_slot_t dboard_slot){
+    switch(dboard_slot){
+    case usrp1_impl::DBOARD_SLOT_A: return I2C_ADDR_RX_A;
+    case usrp1_impl::DBOARD_SLOT_B: return I2C_ADDR_RX_B;
+    default: UHD_THROW_INVALID_CODE_PATH();
+    }
+}
+
+static boost::uint8_t get_tx_ee_addr(usrp1_impl::dboard_slot_t dboard_slot){
+    switch(dboard_slot){
+    case usrp1_impl::DBOARD_SLOT_A: return I2C_ADDR_TX_A;
+    case usrp1_impl::DBOARD_SLOT_B: return I2C_ADDR_TX_B;
+    default: UHD_THROW_INVALID_CODE_PATH();
+    }
+}
+
+/***********************************************************************
+ * Dboard Initialization
+ **********************************************************************/
+void usrp1_impl::dboard_init(void)
+{
+    BOOST_FOREACH(dboard_slot_t dboard_slot, _dboard_slots){
+
+        //read the tx and rx dboard eeproms
+        _rx_db_eeproms[dboard_slot] = dboard_eeprom_t(_iface->read_eeprom(
+            get_rx_ee_addr(dboard_slot), 0, dboard_eeprom_t::num_bytes()
+        ));
+
+        _tx_db_eeproms[dboard_slot] = dboard_eeprom_t(_iface->read_eeprom(
+            get_tx_ee_addr(dboard_slot), 0, dboard_eeprom_t::num_bytes()
+        ));
+
+        //create a new dboard interface and manager
+        _dboard_ifaces[dboard_slot] = make_dboard_iface(
+            _iface, _clock_ctrl, _codec_ctrls[dboard_slot],
+            dboard_slot, _rx_db_eeproms[dboard_slot].id
+        );
+
+        _dboard_managers[dboard_slot] = dboard_manager::make(
+            _rx_db_eeproms[dboard_slot].id,
+            _tx_db_eeproms[dboard_slot].id,
+            _dboard_ifaces[dboard_slot]
+        );
+
+        //setup the dboard proxies
+        _rx_dboard_proxies[dboard_slot] = wax_obj_proxy::make(
+             boost::bind(&usrp1_impl::rx_dboard_get, this, _1, _2, dboard_slot),
+             boost::bind(&usrp1_impl::rx_dboard_set, this, _1, _2, dboard_slot));
+
+        _tx_dboard_proxies[dboard_slot] = wax_obj_proxy::make(
+             boost::bind(&usrp1_impl::tx_dboard_get, this, _1, _2, dboard_slot),
+             boost::bind(&usrp1_impl::tx_dboard_set, this, _1, _2, dboard_slot));
+    }
+
+}
+
+/***********************************************************************
+ * RX Dboard Get
+ **********************************************************************/
+void usrp1_impl::rx_dboard_get(const wax::obj &key_, wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<dboard_prop_t>()){
+    case DBOARD_PROP_NAME:
+        val = str(boost::format("usrp1 dboard (rx unit) - %c") % char(dboard_slot));
+        return;
+
+    case DBOARD_PROP_SUBDEV:
+        val = _dboard_managers[dboard_slot]->get_rx_subdev(key.name);
+        return;
+
+    case DBOARD_PROP_SUBDEV_NAMES:
+        val = _dboard_managers[dboard_slot]->get_rx_subdev_names();
+        return;
+
+    case DBOARD_PROP_DBOARD_ID:
+        val = _rx_db_eeproms[dboard_slot].id;
+        return;
+
+    case DBOARD_PROP_DBOARD_IFACE:
+        val = _dboard_ifaces[dboard_slot];
+        return;
+
+    case DBOARD_PROP_CODEC:
+        val = _rx_codec_proxies[dboard_slot]->get_link();
+        return;
+
+    case DBOARD_PROP_GAIN_GROUP:
+        val = make_gain_group(
+            _dboard_managers[dboard_slot]->get_rx_subdev(key.name),
+            _rx_codec_proxies[dboard_slot]->get_link(),
+            GAIN_GROUP_POLICY_RX
+        );
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * RX Dboard Set
+ **********************************************************************/
+void usrp1_impl::rx_dboard_set(const wax::obj &key, const wax::obj &val, dboard_slot_t dboard_slot)
+{
+    switch(key.as<dboard_prop_t>()) {
+    case DBOARD_PROP_DBOARD_ID:
+        _rx_db_eeproms[dboard_slot].id = val.as<dboard_id_t>();
+        _iface->write_eeprom(
+            get_rx_ee_addr(dboard_slot), 0,
+            _rx_db_eeproms[dboard_slot].get_eeprom_bytes()
+        );
+        return;
+
+    default:
+        UHD_THROW_PROP_SET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * TX Dboard Get
+ **********************************************************************/
+void usrp1_impl::tx_dboard_get(const wax::obj &key_, wax::obj &val, dboard_slot_t dboard_slot)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<dboard_prop_t>()){
+    case DBOARD_PROP_NAME:
+        val = str(boost::format("usrp1 dboard (tx unit) - %c") % char(dboard_slot));
+        return;
+
+    case DBOARD_PROP_SUBDEV:
+        val = _dboard_managers[dboard_slot]->get_tx_subdev(key.name);
+        return;
+
+    case DBOARD_PROP_SUBDEV_NAMES:
+        val = _dboard_managers[dboard_slot]->get_tx_subdev_names();
+        return;
+
+    case DBOARD_PROP_DBOARD_ID:
+        val = _tx_db_eeproms[dboard_slot].id;
+        return;
+
+    case DBOARD_PROP_DBOARD_IFACE:
+        val = _dboard_ifaces[dboard_slot];
+        return;
+
+    case DBOARD_PROP_CODEC:
+        val = _tx_codec_proxies[dboard_slot]->get_link();
+        return;
+
+    case DBOARD_PROP_GAIN_GROUP:
+        val = make_gain_group(
+            _dboard_managers[dboard_slot]->get_tx_subdev(key.name),
+            _tx_codec_proxies[dboard_slot]->get_link(),
+            GAIN_GROUP_POLICY_TX
+        );
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * TX Dboard Set
+ **********************************************************************/
+void usrp1_impl::tx_dboard_set(const wax::obj &key, const wax::obj &val, dboard_slot_t dboard_slot)
+{
+    switch(key.as<dboard_prop_t>()) {
+    case DBOARD_PROP_DBOARD_ID:
+        _tx_db_eeproms[dboard_slot].id = val.as<dboard_id_t>();
+        _iface->write_eeprom(
+            get_tx_ee_addr(dboard_slot), 0,
+            _tx_db_eeproms[dboard_slot].get_eeprom_bytes()
+        );
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
diff --git a/host/lib/usrp/usrp1/dsp_impl.cpp b/host/lib/usrp/usrp1/dsp_impl.cpp
new file mode 100644
index 000000000..d5a88fa2d
--- /dev/null
+++ b/host/lib/usrp/usrp1/dsp_impl.cpp
@@ -0,0 +1,205 @@
+//
+// 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 "usrp1_impl.hpp"
+#include "fpga_regs_standard.h"
+#include <uhd/usrp/dsp_utils.hpp>
+#include <uhd/usrp/dsp_props.hpp>
+#include <boost/bind.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <cmath>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * RX DDC Initialization
+ **********************************************************************/
+void usrp1_impl::rx_dsp_init(void)
+{
+    _rx_dsp_proxy = wax_obj_proxy::make(
+        boost::bind(&usrp1_impl::rx_dsp_get, this, _1, _2),
+        boost::bind(&usrp1_impl::rx_dsp_set, this, _1, _2));
+
+    rx_dsp_set(DSP_PROP_HOST_RATE, _clock_ctrl->get_master_clock_freq() / 16);
+}
+
+/***********************************************************************
+ * RX DDC Get
+ **********************************************************************/
+void usrp1_impl::rx_dsp_get(const wax::obj &key, wax::obj &val)
+{
+    switch(key.as<dsp_prop_t>()){
+    case DSP_PROP_NAME:
+        val = std::string("usrp1 ddc0");
+        return;
+
+    case DSP_PROP_OTHERS:
+        val = prop_names_t();
+        return;
+
+    case DSP_PROP_FREQ_SHIFT:
+        val = _rx_dsp_freq;
+        return;
+
+    case DSP_PROP_CODEC_RATE:
+        val = _clock_ctrl->get_master_clock_freq();
+        return;
+
+    case DSP_PROP_HOST_RATE:
+        val = _clock_ctrl->get_master_clock_freq()/_rx_dsp_decim;
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+
+}
+
+/***********************************************************************
+ * RX DDC Set
+ **********************************************************************/
+void usrp1_impl::rx_dsp_set(const wax::obj &key, const wax::obj &val)
+{
+    switch(key.as<dsp_prop_t>()) {
+    case DSP_PROP_FREQ_SHIFT: {
+            double new_freq = val.as<double>();
+            boost::uint32_t reg_word = dsp_type1::calc_cordic_word_and_update(
+                new_freq, _clock_ctrl->get_master_clock_freq());
+
+            //TODO TODO TODO TODO TODO TODO TODO TODO TODO 
+            //
+            // Handle multiple receive channels / DDC's
+            //
+            //TODO TODO TODO TODO TODO TODO TODO TODO TODO
+            _iface->poke32(FR_RX_FREQ_0, reg_word);
+            _iface->poke32(FR_RX_FREQ_1, reg_word);
+            _iface->poke32(FR_RX_FREQ_2, reg_word);
+            _iface->poke32(FR_RX_FREQ_3, reg_word);
+
+            _rx_dsp_freq = new_freq;
+            return;
+        }
+    case DSP_PROP_HOST_RATE: {
+            unsigned int rate =
+                    _clock_ctrl->get_master_clock_freq() / val.as<double>();
+
+            if ((rate & 0x01) || (rate < 4) || (rate > 256)) {
+                std::cerr << "Decimation must be even and between 4 and 256"
+                          << std::endl;
+                return;
+            }
+
+            _rx_dsp_decim = rate;
+            //TODO Poll every 100ms. Make it selectable?
+            _rx_samps_per_poll_interval = 0.1 * _clock_ctrl->get_master_clock_freq() / rate;
+
+            _iface->poke32(FR_DECIM_RATE, _rx_dsp_decim/2 - 1);
+        }
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+
+}
+
+/***********************************************************************
+ * TX DUC Initialization
+ **********************************************************************/
+void usrp1_impl::tx_dsp_init(void)
+{
+    _tx_dsp_proxy = wax_obj_proxy::make(
+                          boost::bind(&usrp1_impl::tx_dsp_get, this, _1, _2),
+                          boost::bind(&usrp1_impl::tx_dsp_set, this, _1, _2));
+
+    //initial config and update
+    tx_dsp_set(DSP_PROP_HOST_RATE, _clock_ctrl->get_master_clock_freq() * 2 / 16);
+}
+
+/***********************************************************************
+ * TX DUC Get
+ **********************************************************************/
+void usrp1_impl::tx_dsp_get(const wax::obj &key, wax::obj &val)
+{
+    switch(key.as<dsp_prop_t>()) {
+    case DSP_PROP_NAME:
+        val = std::string("usrp1 duc0");
+        return;
+
+    case DSP_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case DSP_PROP_FREQ_SHIFT:
+        val = _tx_dsp_freq;
+        return;
+
+    case DSP_PROP_CODEC_RATE:
+        val = _clock_ctrl->get_master_clock_freq() * 2;
+        return;
+
+    case DSP_PROP_HOST_RATE:
+        val = _clock_ctrl->get_master_clock_freq() * 2 / _tx_dsp_interp;
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+
+}
+
+/***********************************************************************
+ * TX DUC Set
+ **********************************************************************/
+void usrp1_impl::tx_dsp_set(const wax::obj &key, const wax::obj &val)
+{
+    switch(key.as<dsp_prop_t>()) {
+
+    //TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO
+    //
+    // Set both codec frequencies until we have duality properties 
+    //
+    //TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO
+    case DSP_PROP_FREQ_SHIFT: {
+            double new_freq = val.as<double>();
+            _codec_ctrls[DBOARD_SLOT_A]->set_duc_freq(new_freq);
+            _codec_ctrls[DBOARD_SLOT_B]->set_duc_freq(new_freq);
+            _tx_dsp_freq = new_freq;
+            return;
+        }
+
+    case DSP_PROP_HOST_RATE: {
+            unsigned int rate =
+                    _clock_ctrl->get_master_clock_freq() * 2 / val.as<double>();
+
+            if ((rate & 0x01) || (rate < 8) || (rate > 512)) {
+                std::cerr << "Interpolation rate must be even and between 8 and 512"
+                          << std::endl;
+                return;
+            }
+
+            _tx_dsp_interp = rate;
+
+            //TODO Poll every 100ms. Make it selectable? 
+            _tx_samps_per_poll_interval = 0.1 * _clock_ctrl->get_master_clock_freq() * 2 / rate;
+
+            _iface->poke32(FR_INTERP_RATE, _tx_dsp_interp / 4 - 1);
+            return;
+        }
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+
+}
diff --git a/host/lib/usrp/usrp1/io_impl.cpp b/host/lib/usrp/usrp1/io_impl.cpp
new file mode 100644
index 000000000..92e8bc20a
--- /dev/null
+++ b/host/lib/usrp/usrp1/io_impl.cpp
@@ -0,0 +1,326 @@
+//
+// 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 "../../transport/vrt_packet_handler.hpp"
+#include "usrp_commands.h"
+#include "usrp1_impl.hpp"
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/transport/convert_types.hpp>
+#include <uhd/transport/bounded_buffer.hpp>
+#include <boost/bind.hpp>
+#include <boost/format.hpp>
+#include <boost/asio.hpp>
+#include <boost/bind.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace uhd::transport;
+namespace asio = boost::asio;
+
+struct usrp1_send_state {
+    uhd::transport::managed_send_buffer::sptr send_buff;
+    size_t bytes_written;
+    size_t underrun_poll_samp_count;
+
+    size_t bytes_free()
+    {
+        if (send_buff != NULL)
+            return send_buff->size() - bytes_written;
+        else
+            return 0;
+    }
+};
+
+struct usrp1_recv_state {
+    uhd::transport::managed_recv_buffer::sptr recv_buff;
+    size_t bytes_read;
+    size_t overrun_poll_samp_count;
+
+    size_t bytes_avail()
+    {
+        if (recv_buff != NULL)
+            return recv_buff->size() - bytes_read;
+        else
+            return 0;
+    }
+};
+
+/***********************************************************************
+ * IO Implementation Details
+ **********************************************************************/
+struct usrp1_impl::io_impl {
+    io_impl();
+    ~io_impl(void);
+
+    //state handling for buffer management 
+    usrp1_recv_state recv_state;
+    usrp1_send_state send_state;
+
+    //send transport management 
+    bool get_send_buffer(zero_copy_if::sptr zc_if);
+    size_t copy_convert_send_samps(const void *buff, size_t num_samps,
+                              size_t sample_offset, const io_type_t io_type,
+                              otw_type_t otw_type);
+    bool conditional_buff_commit(bool force);
+    bool check_underrun(usrp_ctrl::sptr ctrl_if,
+                        size_t poll_interval, bool force);
+
+    //recv transport management 
+    bool get_recv_buffer(zero_copy_if::sptr zc_if);
+    size_t copy_convert_recv_samps(void *buff, size_t num_samps,
+                              size_t sample_offset, const io_type_t io_type,
+                              otw_type_t otw_type);
+    bool check_overrun(usrp_ctrl::sptr ctrl_if,
+                        size_t poll_interval, bool force);
+};
+
+usrp1_impl::io_impl::io_impl()
+{
+    send_state.send_buff = uhd::transport::managed_send_buffer::sptr();
+    recv_state.recv_buff = uhd::transport::managed_recv_buffer::sptr();
+}
+
+usrp1_impl::io_impl::~io_impl(void)
+{
+   /* NOP */
+}
+
+void usrp1_impl::io_init(void)
+{
+    _rx_otw_type.width = 16;
+    _rx_otw_type.shift = 0;
+    _rx_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
+
+    _tx_otw_type.width = 16;
+    _tx_otw_type.shift = 0;
+    _tx_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
+
+    _io_impl = UHD_PIMPL_MAKE(io_impl, ());
+}
+
+/***********************************************************************
+ * Data Send
+ **********************************************************************/
+bool usrp1_impl::io_impl::get_send_buffer(zero_copy_if::sptr zc_if)
+{
+    if (send_state.send_buff == NULL) {
+
+        send_state.send_buff = zc_if->get_send_buff();
+        if (send_state.send_buff == NULL)
+            return false;
+
+        send_state.bytes_written = 0;
+    }
+
+    return true;
+}
+
+size_t usrp1_impl::io_impl::copy_convert_send_samps(const void *buff,
+                                                    size_t num_samps,
+                                                    size_t sample_offset,
+                                                    const io_type_t io_type,
+                                                    otw_type_t otw_type)
+{
+    UHD_ASSERT_THROW(send_state.bytes_free() % otw_type.get_sample_size() == 0);
+
+    size_t samps_free = send_state.bytes_free() / otw_type.get_sample_size();
+    size_t copy_samps = std::min(num_samps - sample_offset, samps_free); 
+
+    const boost::uint8_t *io_mem =
+        reinterpret_cast<const boost::uint8_t *>(buff);
+
+    boost::uint8_t *otw_mem = send_state.send_buff->cast<boost::uint8_t *>();
+
+    convert_io_type_to_otw_type(io_mem + sample_offset * io_type.size,
+                                io_type,
+                                otw_mem + send_state.bytes_written,
+                                otw_type,
+                                copy_samps);
+
+    send_state.bytes_written += copy_samps * otw_type.get_sample_size();
+    send_state.underrun_poll_samp_count += copy_samps;
+
+    return copy_samps;
+}
+
+bool usrp1_impl::io_impl::conditional_buff_commit(bool force)
+{
+    if (send_state.bytes_written % 512)
+        return false;
+
+    if (force || send_state.bytes_free() == 0) {
+        send_state.send_buff->commit(send_state.bytes_written);
+        send_state.send_buff = uhd::transport::managed_send_buffer::sptr();
+        return true;
+    }
+    
+    return false;
+}
+
+bool usrp1_impl::io_impl::check_underrun(usrp_ctrl::sptr ctrl_if,
+                                         size_t poll_interval,
+                                         bool force)
+{
+    unsigned char underrun = 0;
+
+    bool ready_to_poll = send_state.underrun_poll_samp_count > poll_interval;
+
+    if (force || ready_to_poll) {
+        int ret = ctrl_if->usrp_control_read(VRQ_GET_STATUS,
+                                             0,
+                                             GS_TX_UNDERRUN,
+                                             &underrun, sizeof(char));
+        if (ret < 0)
+            std::cerr << "USRP: underrun check failed" << std::endl;
+        if (underrun)
+            std::cerr << "U" << std::flush;
+
+        send_state.underrun_poll_samp_count = 0;
+    }
+
+    return (bool) underrun;
+}
+
+size_t usrp1_impl::send(const std::vector<const void *> &buffs,
+                        size_t num_samps,
+                        const tx_metadata_t &,
+                        const io_type_t &io_type,
+                        send_mode_t)
+{
+    UHD_ASSERT_THROW(buffs.size() == 1);
+
+    size_t total_samps_sent = 0;
+
+    while (total_samps_sent < num_samps) {
+        if (!_io_impl->get_send_buffer(_data_transport))
+            return 0;
+
+        total_samps_sent += _io_impl->copy_convert_send_samps(buffs[0],
+                                                              num_samps,
+                                                              total_samps_sent,
+                                                              io_type,
+                                                              _tx_otw_type);
+        if (total_samps_sent == num_samps)
+            _io_impl->conditional_buff_commit(true);
+        else
+            _io_impl->conditional_buff_commit(false);
+
+        _io_impl->check_underrun(_ctrl_transport,
+                                 _tx_samps_per_poll_interval, false);
+    }
+
+    return total_samps_sent;
+}
+
+/***********************************************************************
+ * Data Recv
+ **********************************************************************/
+bool usrp1_impl::io_impl::get_recv_buffer(zero_copy_if::sptr zc_if)
+{
+    if ((recv_state.recv_buff == NULL) || (recv_state.bytes_avail() == 0)) {
+
+        recv_state.recv_buff = zc_if->get_recv_buff();
+        if (recv_state.recv_buff == NULL)
+            return false;
+
+        recv_state.bytes_read = 0;
+    }
+
+    return true;
+}
+
+size_t usrp1_impl::io_impl::copy_convert_recv_samps(void *buff,
+                                                    size_t num_samps,
+                                                    size_t sample_offset,
+                                                    const io_type_t io_type,
+                                                    otw_type_t otw_type)
+{
+    UHD_ASSERT_THROW(recv_state.bytes_avail() % otw_type.get_sample_size() == 0);
+
+    size_t samps_avail = recv_state.bytes_avail() / otw_type.get_sample_size();
+    size_t copy_samps = std::min(num_samps - sample_offset, samps_avail); 
+
+    const boost::uint8_t *otw_mem =
+        recv_state.recv_buff->cast<const boost::uint8_t *>();
+
+    boost::uint8_t *io_mem = reinterpret_cast<boost::uint8_t *>(buff);
+
+    convert_otw_type_to_io_type(otw_mem + recv_state.bytes_read,
+                                otw_type,
+                                io_mem + sample_offset * io_type.size,
+                                io_type,
+                                copy_samps);
+
+    recv_state.bytes_read += copy_samps * otw_type.get_sample_size();
+    recv_state.overrun_poll_samp_count += copy_samps;
+
+    return copy_samps;
+}
+
+bool usrp1_impl::io_impl::check_overrun(usrp_ctrl::sptr ctrl_if,
+                                        size_t poll_interval,
+                                        bool force)
+{
+    unsigned char overrun = 0;
+
+    bool ready_to_poll = recv_state.overrun_poll_samp_count > poll_interval;
+
+    if (force || ready_to_poll) {
+        int ret = ctrl_if->usrp_control_read(VRQ_GET_STATUS,
+                                             0,
+                                             GS_RX_OVERRUN,
+                                             &overrun, sizeof(char));
+        if (ret < 0)
+            std::cerr << "USRP: overrrun check failed" << std::endl;
+        if (overrun)
+            std::cerr << "O" << std::flush;
+
+        recv_state.overrun_poll_samp_count = 0;
+    }
+
+    return (bool) overrun;
+}
+
+size_t usrp1_impl::recv(const std::vector<void *> &buffs,
+                        size_t num_samps,
+                        rx_metadata_t &,
+                        const io_type_t &io_type,
+                        recv_mode_t,
+                        size_t)
+{
+    UHD_ASSERT_THROW(buffs.size() == 1);
+
+    size_t total_samps_recv = 0;
+
+    while (total_samps_recv < num_samps) {
+
+        if (!_io_impl->get_recv_buffer(_data_transport))
+            return 0;
+
+        total_samps_recv += _io_impl->copy_convert_recv_samps(buffs[0],
+                                                              num_samps,
+                                                              total_samps_recv,
+                                                              io_type,
+                                                              _rx_otw_type);
+        _io_impl->check_overrun(_ctrl_transport,
+                                _rx_samps_per_poll_interval, false);
+    }
+
+    return total_samps_recv; 
+}
diff --git a/host/lib/usrp/usrp1/mboard_impl.cpp b/host/lib/usrp/usrp1/mboard_impl.cpp
new file mode 100644
index 000000000..a90532cb8
--- /dev/null
+++ b/host/lib/usrp/usrp1/mboard_impl.cpp
@@ -0,0 +1,382 @@
+//
+// 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 "usrp1_impl.hpp"
+#include "usrp_commands.h"
+#include "fpga_regs_standard.h"
+#include "fpga_regs_common.h"
+#include "usrp_i2c_addr.h"
+#include <uhd/usrp/misc_utils.hpp>
+#include <uhd/usrp/mboard_props.hpp>
+#include <uhd/usrp/dboard_props.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <uhd/utils/warning.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/utils/images.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/foreach.hpp>
+#include <boost/bind.hpp>
+#include <boost/thread/thread.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Calculate the RX mux value:
+ *    The I and Q mux values are intentionally reversed to flip I and Q
+ *    to account for the reversal in the type conversion routines.
+ **********************************************************************/
+static int calc_rx_mux_pair(int adc_for_i, int adc_for_q){
+    return (adc_for_i << 2) | (adc_for_q << 0); //shift reversal here
+}
+
+/*!
+ *    3                   2                   1                   0
+ *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-----------------------+-------+-------+-------+-------+-+-----+
+ * |      must be zero     | Q3| I3| Q2| I2| Q1| I1| Q0| I0|Z| NCH |
+ * +-----------------------+-------+-------+-------+-------+-+-----+
+ */
+static boost::uint32_t calc_rx_mux(
+    const subdev_spec_t &subdev_spec, wax::obj mboard
+){
+    //create look-up-table for mapping dboard name and connection type to ADC flags
+    static const int ADC0 = 0, ADC1 = 1, ADC2 = 2, ADC3 = 3;
+    static const uhd::dict<std::string, uhd::dict<subdev_conn_t, int> > name_to_conn_to_flag = boost::assign::map_list_of
+        ("A", boost::assign::map_list_of
+            (SUBDEV_CONN_COMPLEX_IQ, calc_rx_mux_pair(ADC0, ADC1)) //I and Q
+            (SUBDEV_CONN_COMPLEX_QI, calc_rx_mux_pair(ADC1, ADC0)) //I and Q
+            (SUBDEV_CONN_REAL_I,     calc_rx_mux_pair(ADC0, ADC0)) //I and Q (Q identical but ignored Z=1)
+            (SUBDEV_CONN_REAL_Q,     calc_rx_mux_pair(ADC1, ADC1)) //I and Q (Q identical but ignored Z=1)
+        )
+        ("B", boost::assign::map_list_of
+            (SUBDEV_CONN_COMPLEX_IQ, calc_rx_mux_pair(ADC2, ADC3)) //I and Q
+            (SUBDEV_CONN_COMPLEX_QI, calc_rx_mux_pair(ADC3, ADC2)) //I and Q
+            (SUBDEV_CONN_REAL_I,     calc_rx_mux_pair(ADC2, ADC2)) //I and Q (Q identical but ignored Z=1)
+            (SUBDEV_CONN_REAL_Q,     calc_rx_mux_pair(ADC3, ADC3)) //I and Q (Q identical but ignored Z=1)
+        )
+    ;
+
+    //extract the number of channels
+    size_t nchan = subdev_spec.size();
+
+    //calculate the channel flags
+    int channel_flags = 0;
+    size_t num_reals = 0, num_quads = 0;
+    BOOST_FOREACH(const subdev_spec_pair_t &pair, subdev_spec){
+        wax::obj dboard = mboard[named_prop_t(MBOARD_PROP_RX_DBOARD, pair.db_name)];
+        wax::obj subdev = dboard[named_prop_t(DBOARD_PROP_SUBDEV, pair.sd_name)];
+        subdev_conn_t conn = subdev[SUBDEV_PROP_CONNECTION].as<subdev_conn_t>();
+        switch(conn){
+        case SUBDEV_CONN_COMPLEX_IQ:
+        case SUBDEV_CONN_COMPLEX_QI: num_quads++; break;
+        case SUBDEV_CONN_REAL_I:
+        case SUBDEV_CONN_REAL_Q:     num_reals++; break;
+        }
+        channel_flags = (channel_flags << 4) | name_to_conn_to_flag[pair.db_name][conn];
+    }
+
+    //calculate Z:
+    //    for all real sources: Z = 1
+    //    for all quadrature sources: Z = 0
+    //    for mixed sources: warning + Z = 0
+    int Z = (num_quads > 0)? 0 : 1;
+    if (num_quads != 0 and num_reals != 0) uhd::print_warning(
+        "Mixing real and quadrature rx subdevices is not supported.\n"
+        "The Q input to the real source(s) will be non-zero.\n"
+    );
+
+    //calculate the rx mux value
+    return ((channel_flags & 0xffff) << 4) | ((Z & 0x1) << 3) | ((nchan & 0x7) << 0);
+}
+
+/***********************************************************************
+ * Calculate the TX mux value:
+ *    The I and Q mux values are intentionally reversed to flip I and Q
+ *    to account for the reversal in the type conversion routines.
+ **********************************************************************/
+static int calc_tx_mux_pair(int chn_for_i, int chn_for_q){
+    return (chn_for_i << 4) | (chn_for_q << 0); //shift reversal here
+}
+
+/*!
+ *    3                   2                   1                   0
+ *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-----------------------+-------+-------+-------+-------+-+-----+
+ * |                       | DAC1Q | DAC1I | DAC0Q | DAC0I |0| NCH |
+ * +-----------------------------------------------+-------+-+-----+
+ */
+static boost::uint32_t calc_tx_mux(
+    const subdev_spec_t &subdev_spec, wax::obj mboard
+){
+    //create look-up-table for mapping channel number and connection type to flags
+    static const int ENB = 1 << 3, CHAN_I0 = 0, CHAN_Q0 = 1, CHAN_I1 = 2, CHAN_Q1 = 3;
+    static const uhd::dict<size_t, uhd::dict<subdev_conn_t, int> > chan_to_conn_to_flag = boost::assign::map_list_of
+        (0, boost::assign::map_list_of
+            (SUBDEV_CONN_COMPLEX_IQ, calc_tx_mux_pair(CHAN_I0 | ENB, CHAN_Q0 | ENB))
+            (SUBDEV_CONN_COMPLEX_QI, calc_tx_mux_pair(CHAN_Q0 | ENB, CHAN_I0 | ENB))
+            (SUBDEV_CONN_REAL_I,     calc_tx_mux_pair(CHAN_I0 | ENB, 0            ))
+            (SUBDEV_CONN_REAL_Q,     calc_tx_mux_pair(0,             CHAN_I0 | ENB))
+        )
+        (1, boost::assign::map_list_of
+            (SUBDEV_CONN_COMPLEX_IQ, calc_tx_mux_pair(CHAN_I1 | ENB, CHAN_Q1 | ENB))
+            (SUBDEV_CONN_COMPLEX_QI, calc_tx_mux_pair(CHAN_Q1 | ENB, CHAN_I1 | ENB))
+            (SUBDEV_CONN_REAL_I,     calc_tx_mux_pair(CHAN_I1 | ENB, 0            ))
+            (SUBDEV_CONN_REAL_Q,     calc_tx_mux_pair(0,             CHAN_I1 | ENB))
+        )
+    ;
+
+    //extract the number of channels
+    size_t nchan = subdev_spec.size();
+
+    //calculate the channel flags
+    int channel_flags = 0, chan = 0;
+    BOOST_FOREACH(const subdev_spec_pair_t &pair, subdev_spec){
+        wax::obj dboard = mboard[named_prop_t(MBOARD_PROP_TX_DBOARD, pair.db_name)];
+        wax::obj subdev = dboard[named_prop_t(DBOARD_PROP_SUBDEV, pair.sd_name)];
+        subdev_conn_t conn = subdev[SUBDEV_PROP_CONNECTION].as<subdev_conn_t>();
+
+        //combine the channel flags: shift for slot A vs B
+        if (pair.db_name == "A") channel_flags |= chan_to_conn_to_flag[chan][conn] << 0;
+        if (pair.db_name == "B") channel_flags |= chan_to_conn_to_flag[chan][conn] << 8;
+
+        //increment for the next channel
+        chan++;
+    }
+
+    //calculate the tx mux value
+    return ((channel_flags & 0xffff) << 4) | ((nchan & 0x7) << 0);
+}
+
+/*!
+ * Capabilities Register
+ *
+ *    3                   2                   1                   0
+ *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-----------------------------------------------+-+-----+-+-----+
+ * |               Reserved                        |T|DUCs |R|DDCs |
+ * +-----------------------------------------------+-+-----+-+-----+
+ */
+static int num_ddcs(boost::uint32_t regval)
+{
+    return (regval >> 0) & 0x0007;
+}
+
+static int num_ducs(boost::uint32_t regval)
+{
+    return (regval >> 4) & 0x0007;
+}
+
+static bool has_rx_halfband(boost::uint32_t regval)
+{
+    return (regval >> 3) & 0x0001;
+}
+
+static bool has_tx_halfband(boost::uint32_t regval)
+{
+    return (regval >> 7) & 0x0001;
+}
+
+/***********************************************************************
+ * Mboard Initialization
+ **********************************************************************/
+void usrp1_impl::mboard_init(void)
+{
+    _mboard_proxy = wax_obj_proxy::make(
+                     boost::bind(&usrp1_impl::mboard_get, this, _1, _2),
+                     boost::bind(&usrp1_impl::mboard_set, this, _1, _2));
+
+    // Normal mode with no loopback or Rx counting
+    _iface->poke32(FR_MODE, 0x00000000);
+    _iface->poke32(FR_DEBUG_EN, 0x00000000);
+    _iface->poke32(FR_RX_SAMPLE_RATE_DIV, 0x00000001);
+    _iface->poke32(FR_TX_SAMPLE_RATE_DIV, 0x00000003);
+    _iface->poke32(FR_DC_OFFSET_CL_EN, 0x0000000f);
+
+    // Reset offset correction registers
+    _iface->poke32(FR_ADC_OFFSET_0, 0x00000000);
+    _iface->poke32(FR_ADC_OFFSET_1, 0x00000000);
+    _iface->poke32(FR_ADC_OFFSET_2, 0x00000000);
+    _iface->poke32(FR_ADC_OFFSET_3, 0x00000000);
+
+    // Set default for RX format to 16-bit I&Q and no half-band filter bypass
+    _iface->poke32(FR_RX_FORMAT, 0x00000300);
+
+    // Set default for TX format to 16-bit I&Q
+    _iface->poke32(FR_TX_FORMAT, 0x00000000);
+
+    // TODO TODO TODO TODO TODO TODO TODO TODO TODO TODO 
+    // 
+    // Do something useful with the capabilities register
+    //
+    boost::uint32_t regval = _iface->peek32(FR_RB_CAPS);
+    std::cout << "USRP1 Capabilities" << std::endl;
+    std::cout << "    number of duc's: " << num_ddcs(regval) << std::endl;
+    std::cout << "    number of ddc's: " << num_ducs(regval) << std::endl;
+    std::cout << "    rx halfband:     " << has_rx_halfband(regval) << std::endl;
+    std::cout << "    tx halfband:     " << has_tx_halfband(regval) << std::endl;
+}
+
+void usrp1_impl::issue_stream_cmd(const stream_cmd_t &stream_cmd)
+{
+    if (stream_cmd.stream_mode == stream_cmd_t::STREAM_MODE_START_CONTINUOUS) {
+        _iface->write_firmware_cmd(VRQ_FPGA_SET_RX_ENABLE, true, 0, 0, 0);
+    }
+
+    if (stream_cmd.stream_mode == stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS) {
+        _iface->write_firmware_cmd(VRQ_FPGA_SET_RX_ENABLE, false, 0, 0, 0);
+    }
+}
+
+/***********************************************************************
+ * Mboard Get
+ **********************************************************************/
+static prop_names_t dboard_names = boost::assign::list_of("A")("B");
+
+void usrp1_impl::mboard_get(const wax::obj &key_, wax::obj &val)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    if(key_.type() == typeid(std::string)) {
+      if(key.as<std::string>() == "serial") {
+        uhd::byte_vector_t buf;
+        buf.insert(buf.begin(), 248);
+        boost::this_thread::sleep(boost::posix_time::milliseconds(100));
+        _iface->write_i2c(I2C_DEV_EEPROM, buf);
+        boost::this_thread::sleep(boost::posix_time::milliseconds(100));
+        buf = _iface->read_i2c(I2C_DEV_EEPROM, 8);
+        val = std::string(buf.begin(), buf.end());
+      }
+
+      return;
+   	}
+
+    //handle the get request conditioned on the key
+    switch(key.as<mboard_prop_t>()){
+    case MBOARD_PROP_NAME:
+        val = std::string("usrp1 mboard");
+        return;
+
+    case MBOARD_PROP_OTHERS:
+        val = prop_names_t();
+        return;
+
+    case MBOARD_PROP_RX_DBOARD:
+        uhd::assert_has(dboard_names, key.name, "dboard name");
+        if (key.name == "A") val = _rx_dboard_proxies[DBOARD_SLOT_A]->get_link();
+        if (key.name == "B") val = _rx_dboard_proxies[DBOARD_SLOT_B]->get_link();
+        return;
+
+    case MBOARD_PROP_RX_DBOARD_NAMES:
+        val = dboard_names;
+        return;
+
+    case MBOARD_PROP_TX_DBOARD:
+        uhd::assert_has(dboard_names, key.name, "dboard name");
+        if (key.name == "A") val = _tx_dboard_proxies[DBOARD_SLOT_A]->get_link();
+        if (key.name == "B") val = _tx_dboard_proxies[DBOARD_SLOT_B]->get_link();
+        return;
+
+    case MBOARD_PROP_TX_DBOARD_NAMES:
+        val = dboard_names;
+        return;
+
+    case MBOARD_PROP_RX_DSP:
+        UHD_ASSERT_THROW(key.name == "");
+        val = _rx_dsp_proxy->get_link();
+        return;
+
+    case MBOARD_PROP_RX_DSP_NAMES:
+        val = prop_names_t(1, "");
+        return;
+
+    case MBOARD_PROP_TX_DSP:
+        UHD_ASSERT_THROW(key.name == "");
+        val = _tx_dsp_proxy->get_link();
+        return;
+
+    case MBOARD_PROP_TX_DSP_NAMES:
+        val = prop_names_t(1, "");
+        return;
+
+    case MBOARD_PROP_CLOCK_CONFIG:
+        val = _clock_config;
+        return;
+
+    case MBOARD_PROP_RX_SUBDEV_SPEC:
+        val = _rx_subdev_spec;
+        return;
+
+    case MBOARD_PROP_TX_SUBDEV_SPEC:
+        val = _tx_subdev_spec;
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * Mboard Set
+ **********************************************************************/
+void usrp1_impl::mboard_set(const wax::obj &key, const wax::obj &val)
+{
+    if(key.type() == typeid(std::string)) {
+      if(key.as<std::string>() == "load_eeprom") {
+        std::string usrp1_eeprom_image = val.as<std::string>();
+        std::cout << "USRP1 EEPROM image: " << usrp1_eeprom_image << std::endl;
+        _ctrl_transport->usrp_load_eeprom(val.as<std::string>());
+      }
+
+      if(key.as<std::string>() == "serial") {
+        std::string sernum = val.as<std::string>();
+        uhd::byte_vector_t buf(sernum.begin(), sernum.end());
+        buf.insert(buf.begin(), 248);
+        _iface->write_i2c(I2C_DEV_EEPROM, buf);
+      }
+
+      return;
+   	}
+
+    //handle the get request conditioned on the key
+    switch(key.as<mboard_prop_t>()){
+
+    case MBOARD_PROP_STREAM_CMD:
+        issue_stream_cmd(val.as<stream_cmd_t>());
+        return;
+
+    case MBOARD_PROP_RX_SUBDEV_SPEC:
+        _rx_subdev_spec = val.as<subdev_spec_t>();
+        verify_rx_subdev_spec(_rx_subdev_spec, _mboard_proxy->get_link());
+        //sanity check
+        UHD_ASSERT_THROW(_rx_subdev_spec.size() <= 2);
+        //set the mux and set the number of rx channels
+        _iface->poke32(FR_RX_MUX, calc_rx_mux(_rx_subdev_spec, _mboard_proxy->get_link()));
+        return;
+
+    case MBOARD_PROP_TX_SUBDEV_SPEC:
+        _tx_subdev_spec = val.as<subdev_spec_t>();
+        verify_tx_subdev_spec(_tx_subdev_spec, _mboard_proxy->get_link());
+        //sanity check
+        UHD_ASSERT_THROW(_tx_subdev_spec.size() <= 2);
+        //set the mux and set the number of tx channels
+        _iface->poke32(FR_TX_MUX, calc_tx_mux(_tx_subdev_spec, _mboard_proxy->get_link()));
+        return;
+
+    default: UHD_THROW_PROP_SET_ERROR();
+    }
+}
diff --git a/host/lib/usrp/usrp1/usrp1_ctrl.cpp b/host/lib/usrp/usrp1/usrp1_ctrl.cpp
new file mode 100644
index 000000000..451129ef5
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_ctrl.cpp
@@ -0,0 +1,446 @@
+//
+// 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 "usrp1_ctrl.hpp"
+#include "usrp_commands.h" 
+#include <uhd/transport/usb_control.hpp>
+#include <boost/functional/hash.hpp>
+#include <boost/thread/thread.hpp>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include <cstring>
+
+using namespace uhd;
+
+enum firmware_code {
+    USRP_FPGA_LOAD_SUCCESS,
+    USRP_FPGA_ALREADY_LOADED,
+    USRP_FIRMWARE_LOAD_SUCCESS,
+    USRP_FIRMWARE_ALREADY_LOADED
+};
+
+#define FX2_FIRMWARE_LOAD 0xa0
+
+/***********************************************************************
+ * Helper Functions
+ **********************************************************************/
+/*!
+ * Create a file hash
+ * The hash will be used to identify the loaded firmware and fpga image 
+ * \param filename file used to generate hash value
+ * \return hash value in a size_t type
+ */
+static size_t generate_hash(const char *filename)
+{
+    std::ifstream file(filename);
+    if (!file)
+        std::cerr << "error: cannot open input file " << filename << std::endl;
+
+    size_t hash = 0;
+
+    char ch;
+    while (file.get(ch)) {
+        boost::hash_combine(hash, ch);
+    }
+
+    if (!file.eof())
+        std::cerr << "error: file error " << filename << std::endl;
+
+    file.close(); 
+    return hash; 
+}
+
+
+/*!
+ * Verify checksum of a Intel HEX record 
+ * \param record a line from an Intel HEX file
+ * \return true if record is valid, false otherwise 
+ */
+static bool checksum(std::string *record)
+{
+
+    size_t len = record->length();
+    unsigned int i;
+    unsigned char sum = 0;
+    unsigned int val;
+
+    for (i = 1; i < len; i += 2) {
+        std::istringstream(record->substr(i, 2)) >> std::hex >> val;
+        sum += val;
+    }
+
+    if (sum == 0)
+       return true;
+    else
+       return false;
+}
+
+
+/*!
+ * Parse Intel HEX record
+ *
+ * \param record a line from an Intel HEX file
+ * \param len output length of record
+ * \param addr output address
+ * \param type output type
+ * \param data output data
+ * \return true if record is sucessfully read, false on error
+ */
+bool parse_record(std::string *record, unsigned int &len,
+                  unsigned int &addr, unsigned int &type,
+                  unsigned char* data)
+{
+    unsigned int i;
+    std::string _data;
+    unsigned int val;
+
+    if (record->substr(0, 1) != ":")
+        return false;
+
+    std::istringstream(record->substr(1, 2)) >> std::hex >> len;
+    std::istringstream(record->substr(3, 4)) >> std::hex >> addr;
+    std::istringstream(record->substr(7, 2)) >> std::hex >> type;
+
+    for (i = 0; i < len; i++) {
+        std::istringstream(record->substr(9 + 2 * i, 2)) >> std::hex >> val;
+        data[i] = (unsigned char) val;
+    } 
+
+    return true;
+}
+
+
+/*!
+ * USRP control implementation for device discovery and configuration
+ */
+class usrp_ctrl_impl : public usrp_ctrl {
+public:
+    usrp_ctrl_impl(uhd::transport::usb_control::sptr ctrl_transport)
+    {
+        _ctrl_transport = ctrl_transport;
+    }
+
+
+    ~usrp_ctrl_impl(void)
+    {
+        /* NOP */
+    }
+
+
+    int usrp_load_firmware(std::string filestring, bool force)
+    {
+        const char *filename = filestring.c_str();
+
+        size_t hash = generate_hash(filename);
+
+        size_t loaded_hash;
+        if (usrp_get_firmware_hash(loaded_hash) < 0) {
+            std::cerr << "firmware hash retrieval failed" << std::endl;
+            return -1;
+        }
+
+        if (!force && (hash == loaded_hash))
+            return USRP_FIRMWARE_ALREADY_LOADED;
+
+        //FIXME: verify types
+        unsigned int len;
+        unsigned int addr;
+        unsigned int type;
+        unsigned char data[512];
+
+        int ret;
+        std::ifstream file;
+        file.open(filename, std::ifstream::in);
+
+        if (!file.good()) {
+            std::cerr << "cannot open firmware input file" << std::endl;
+            return -1; 
+        }
+
+        unsigned char reset_y = 1;
+        unsigned char reset_n = 0;
+
+        //hit the reset line
+        usrp_control_write(FX2_FIRMWARE_LOAD, 0xe600, 0,
+                           &reset_y, 1);
+ 
+        while (!file.eof()) {
+           std::string record;
+           file >> record;
+      
+            //check for valid record 
+            if (!checksum(&record) || 
+                    !parse_record(&record, len, addr, type, data)) {
+                std::cerr << "error: bad record" << std::endl;
+                file.close();
+                return -1;
+            }
+
+            //type 0x00 is data
+            if (type == 0x00) {
+               ret = usrp_control_write(FX2_FIRMWARE_LOAD, addr, 0,
+                                        data, len);
+               if (ret < 0) {
+                    std::cerr << "error: usrp_control_write failed: ";
+                    std::cerr << ret << std::endl;
+                    file.close();
+                    return -1; 
+                }
+            }  
+            //type 0x01 is end 
+            else if (type == 0x01) {
+                usrp_control_write(FX2_FIRMWARE_LOAD, 0xe600, 0,
+                                   &reset_n, 1);
+                usrp_set_firmware_hash(hash);
+                file.close();
+
+                //wait for things to settle
+                boost::this_thread::sleep(boost::posix_time::milliseconds(1000));
+
+                return USRP_FIRMWARE_LOAD_SUCCESS; 
+            }
+            //type anything else is unhandled
+            else {
+                std::cerr << "error: unsupported record" << std::endl;
+                file.close();
+                return -1; 
+            }
+        }
+
+        //file did not end 
+        std::cerr << "error: bad record" << std::endl;
+        file.close();
+        return -1;
+    }
+
+
+    int usrp_load_fpga(std::string filestring)
+    {
+        const char *filename = filestring.c_str();
+
+        size_t hash = generate_hash(filename);
+
+        size_t loaded_hash;
+        if (usrp_get_fpga_hash(loaded_hash) < 0) {
+            std::cerr << "fpga hash retrieval failed" << std::endl;
+            return -1;
+        }
+
+        if (hash == loaded_hash)
+            return USRP_FPGA_ALREADY_LOADED;
+        const int ep0_size = 64;
+        unsigned char buf[ep0_size];
+        int ret;
+
+        FILE *fp;
+        if ((fp = fopen(filename, "rb")) == NULL) {
+            std::cerr << "cannot open fpga input file" << std::endl;
+            fclose(fp);
+            return -1;
+        }
+
+        if (usrp_control_write_cmd(VRQ_FPGA_LOAD, 0, FL_BEGIN) < 0) {
+            std::cerr << "fpga load error" << std::endl;
+            fclose(fp);
+            return -1;
+        }
+
+        ssize_t n;
+        while ((n = fread(buf, 1, sizeof(buf), fp)) > 0) {
+            ret = usrp_control_write(VRQ_FPGA_LOAD, 0, FL_XFER,
+                                     buf, n);
+            if (ret != n) {
+                std::cerr << "fpga load error " << ret << std::endl;
+                fclose(fp);
+                return -1;
+            }
+        }
+ 
+        if (usrp_control_write_cmd(VRQ_FPGA_LOAD, 0, FL_END) < 0) {
+            std::cerr << "fpga load error" << std::endl;
+            fclose(fp);
+            return -1;
+        }
+
+        usrp_set_fpga_hash(hash);
+        fclose(fp);
+        return 0; 
+    }
+
+    int usrp_load_eeprom(std::string filestring)
+    {
+        const char *filename = filestring.c_str();
+        const uint16_t i2c_addr = 0x50;
+
+        //FIXME: verify types
+        int len;
+        unsigned int addr;
+        unsigned char data[256];
+        unsigned char sendbuf[17];
+
+        int ret;
+        std::ifstream file;
+        file.open(filename, std::ifstream::in);
+
+        if (!file.good()) {
+            std::cerr << "cannot open EEPROM input file" << std::endl;
+            return -1; 
+        }
+
+        file.read((char *)data, 256);
+        len = file.gcount();
+
+        if(len == 256) {
+          std::cerr << "error: image size too large" << std::endl;
+          file.close();
+          return -1;
+        }
+
+        const int pagesize = 16;
+        addr = 0;
+        while(len > 0) {
+          sendbuf[0] = addr;
+          memcpy(sendbuf+1, &data[addr], len > pagesize ? pagesize : len);
+          ret = usrp_i2c_write(i2c_addr, sendbuf, (len > pagesize ? pagesize : len)+1);
+          if (ret < 0) {
+            std::cerr << "error: usrp_i2c_write failed: ";
+            std::cerr << ret << std::endl;
+            file.close();
+            return -1; 
+          }
+          addr += pagesize;
+          len -= pagesize;
+          boost::this_thread::sleep(boost::posix_time::milliseconds(100));
+        }
+        file.close();
+        return 0;
+    }
+
+
+    int usrp_set_led(int led_num, bool on)
+    {
+        return usrp_control_write_cmd(VRQ_SET_LED, on, led_num);
+    }
+
+
+    int usrp_get_firmware_hash(size_t &hash)
+    {
+        return usrp_control_read(0xa0, USRP_HASH_SLOT_0_ADDR, 0, 
+                                 (unsigned char*) &hash, sizeof(size_t));
+    }
+
+
+    int usrp_set_firmware_hash(size_t hash)
+    {
+        return usrp_control_write(0xa0, USRP_HASH_SLOT_0_ADDR, 0,
+                                  (unsigned char*) &hash, sizeof(size_t));
+
+    }
+
+
+    int usrp_get_fpga_hash(size_t &hash)
+    {
+        return usrp_control_read(0xa0, USRP_HASH_SLOT_1_ADDR, 0,
+                                 (unsigned char*) &hash, sizeof(size_t));
+    }
+
+
+    int usrp_set_fpga_hash(size_t hash)
+    {
+        return usrp_control_write(0xa0, USRP_HASH_SLOT_1_ADDR, 0,
+                                  (unsigned char*) &hash, sizeof(size_t));
+    }
+
+    int usrp_tx_enable(bool on)
+    {
+        return usrp_control_write_cmd(VRQ_FPGA_SET_TX_ENABLE, on, 0);
+    }
+
+
+    int usrp_rx_enable(bool on)
+    {
+        return usrp_control_write_cmd(VRQ_FPGA_SET_RX_ENABLE, on, 0); 
+    }
+
+
+    int usrp_tx_reset(bool on)
+    {
+        return usrp_control_write_cmd(VRQ_FPGA_SET_TX_RESET, on, 0); 
+    }
+
+
+    int usrp_control_write(boost::uint8_t request,
+                           boost::uint16_t value,
+                           boost::uint16_t index,
+                           unsigned char *buff,
+                           boost::uint16_t length)
+    {
+        return _ctrl_transport->submit(VRT_VENDOR_OUT,     // bmReqeustType
+                                       request,            // bRequest
+                                       value,              // wValue
+                                       index,              // wIndex
+                                       buff,               // data
+                                       length);            // wLength 
+    }
+
+
+    int usrp_control_read(boost::uint8_t request,
+                          boost::uint16_t value,
+                          boost::uint16_t index,
+                          unsigned char *buff,
+                          boost::uint16_t length)
+    {
+        return _ctrl_transport->submit(VRT_VENDOR_IN,      // bmReqeustType
+                                       request,            // bRequest
+                                       value,              // wValue
+                                       index,              // wIndex
+                                       buff,               // data
+                                       length);            // wLength
+    }
+
+
+    int usrp_control_write_cmd(uint8_t request, uint16_t value, uint16_t index)
+    {
+        return usrp_control_write(request, value, index, 0, 0);
+    }
+
+    int usrp_i2c_write(boost::uint16_t i2c_addr, unsigned char *buf, boost::uint16_t len)
+    {
+        return usrp_control_write(VRQ_I2C_WRITE, i2c_addr, 0, buf, len);
+    }
+
+    int usrp_i2c_read(boost::uint16_t i2c_addr, unsigned char *buf, boost::uint16_t len)
+    {
+        return usrp_control_read(VRQ_I2C_READ, i2c_addr, 0, buf, len);
+    }
+
+
+
+private:
+    uhd::transport::usb_control::sptr _ctrl_transport;
+};
+
+/***********************************************************************
+ * Public make function for usrp_ctrl interface
+ **********************************************************************/
+usrp_ctrl::sptr usrp_ctrl::make(uhd::transport::usb_control::sptr ctrl_transport){
+    return sptr(new usrp_ctrl_impl(ctrl_transport));
+}
+
diff --git a/host/lib/usrp/usrp1/usrp1_ctrl.hpp b/host/lib/usrp/usrp1/usrp1_ctrl.hpp
new file mode 100644
index 000000000..a02d9f96c
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_ctrl.hpp
@@ -0,0 +1,163 @@
+//
+// 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_USRP_CTRL_HPP
+#define INCLUDED_USRP_CTRL_HPP
+
+#include <uhd/transport/usb_control.hpp> 
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+
+class usrp_ctrl : boost::noncopyable{
+public:
+    typedef boost::shared_ptr<usrp_ctrl> sptr;
+
+    /*!
+     * Make a usrp control object from a control transport
+     * \param ctrl_transport a USB control transport
+     * \return a new usrp control object
+     */
+    static sptr make(uhd::transport::usb_control::sptr ctrl_transport);
+
+    /*!
+     * Load firmware in Intel HEX Format onto device 
+     * \param filename name of firmware file
+     * \param force reload firmware if already loaded
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_load_firmware(std::string filename,
+                                   bool force = false) = 0;
+
+    /*!
+     * Load fpga file onto usrp 
+     * \param filename name of fpga image 
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_load_fpga(std::string filename) = 0;
+
+    /*!
+     * Load USB descriptor file in Intel HEX format into EEPROM
+     * \param filename name of EEPROM image 
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_load_eeprom(std::string filestring) = 0;
+
+    /*!
+     * Set led usrp 
+     * \param led_num which LED to control (0 or 1)
+     * \param on turn LED on or off
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_set_led(int led_num, bool on) = 0;
+
+    /*!
+     * Get firmware hash 
+     * \param hash a size_t hash value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_get_firmware_hash(size_t &hash) = 0;
+
+    /*!
+     * Set firmware hash 
+     * \param hash a size_t hash value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_set_firmware_hash(size_t hash) = 0;
+                              
+    /*!
+     * Get fpga hash 
+     * \param hash a size_t hash value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_get_fpga_hash(size_t &hash) = 0;
+
+    /*!
+     * Set fpga hash 
+     * \param hash a size_t hash value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_set_fpga_hash(size_t hash) = 0;
+
+    /*!
+     * Set rx enable or disable 
+     * \param on enable or disable value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_rx_enable(bool on) = 0;
+
+    /*!
+     * Set rx enable or disable 
+     * \param on enable or disable value
+     * \return 0 on success, error code otherwise
+     */
+    virtual int usrp_tx_enable(bool on) = 0;
+
+    /*!
+     * Submit an IN transfer 
+     * \param request device specific request 
+     * \param value device specific field
+     * \param index device specific field
+     * \param buff buffer to place data
+     * \return number of bytes read or error 
+     */
+    virtual int usrp_control_read(boost::uint8_t request,
+                                  boost::uint16_t value,
+                                  boost::uint16_t index,
+                                  unsigned char *buff,
+                                  boost::uint16_t length) = 0;
+
+    /*!
+     * Submit an OUT transfer 
+     * \param request device specific request 
+     * \param value device specific field
+     * \param index device specific field
+     * \param buff buffer of data to be sent 
+     * \return number of bytes written or error 
+     */
+    virtual int usrp_control_write(boost::uint8_t request,
+                                   boost::uint16_t value,
+                                   boost::uint16_t index,
+                                   unsigned char *buff,
+                                   boost::uint16_t length) = 0;
+
+    /*!
+     * Perform an I2C write
+     * \param i2c_addr I2C device address
+     * \param buf data to be written 
+     * \param len length of data in bytes
+     * \return number of bytes written or error 
+     */
+
+    virtual int usrp_i2c_write(boost::uint16_t i2c_addr,
+                               unsigned char *buf, 
+                               boost::uint16_t len) = 0;
+
+    /*!
+     * Perform an I2C read
+     * \param i2c_addr I2C device address
+     * \param buf data to be read 
+     * \param len length of data in bytes
+     * \return number of bytes read or error 
+     */
+
+    virtual int usrp_i2c_read(boost::uint16_t i2c_addr,
+                               unsigned char *buf, 
+                               boost::uint16_t len) = 0;
+
+};
+
+#endif /* INCLUDED_USRP_CTRL_HPP */
diff --git a/host/lib/usrp/usrp1/usrp1_iface.cpp b/host/lib/usrp/usrp1/usrp1_iface.cpp
new file mode 100644
index 000000000..4bc18dd16
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_iface.cpp
@@ -0,0 +1,261 @@
+//
+// 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 "usrp1_iface.hpp"
+#include "usrp_commands.h"
+#include <uhd/utils/assert.hpp>
+#include <uhd/utils/byteswap.hpp>
+#include <boost/format.hpp>
+#include <stdexcept>
+#include <iostream>
+#include <iomanip>
+
+using namespace uhd;
+using namespace uhd::transport;
+
+static const bool iface_debug = false;
+
+class usrp1_iface_impl : public usrp1_iface{
+public:
+    /*******************************************************************
+     * Structors
+     ******************************************************************/
+    usrp1_iface_impl(usrp_ctrl::sptr ctrl_transport)
+    {
+        _ctrl_transport = ctrl_transport; 
+    }
+
+    ~usrp1_iface_impl(void)
+    {
+        /* NOP */
+    }
+
+    /*******************************************************************
+     * Peek and Poke
+     ******************************************************************/
+    void poke32(boost::uint32_t addr, boost::uint32_t value)
+    {
+        boost::uint32_t swapped = byteswap(value);
+
+        if (iface_debug) {
+            std::cout.fill('0');
+            std::cout << "poke32(";
+            std::cout << std::dec << std::setw(2) << addr << ", 0x";
+            std::cout << std::hex << std::setw(8) << value << ")" << std::endl;
+        }
+
+        boost::uint8_t w_index_h = SPI_ENABLE_FPGA & 0xff;
+        boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_1) & 0xff;
+
+        int ret =_ctrl_transport->usrp_control_write(
+                                          VRQ_SPI_WRITE,
+                                          addr & 0x7f,
+                                          (w_index_h << 8) | (w_index_l << 0),
+                                          (unsigned char*) &swapped,
+                                          sizeof(boost::uint32_t));
+
+        if (ret < 0)
+            std::cerr << "USRP: failed memory write: " << ret << std::endl;
+    }
+
+    void poke16(boost::uint32_t, boost::uint16_t)
+    {
+        //fpga only handles 32 bit writes
+        std::cerr << "USRP: unsupported operation: poke16()" << std::endl;
+    }
+
+    boost::uint32_t peek32(boost::uint32_t addr)
+    {
+        uint32_t value_out;
+
+        boost::uint8_t w_index_h = SPI_ENABLE_FPGA & 0xff;
+        boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_1) & 0xff;
+
+        int ret = _ctrl_transport->usrp_control_read(
+                                          VRQ_SPI_READ,
+                                          0x80 | (addr & 0x7f),
+                                          (w_index_h << 8) | (w_index_l << 0),
+                                          (unsigned char*) &value_out,
+                                          sizeof(boost::uint32_t));
+
+        if (ret < 0)
+            std::cerr << "USRP: failed memory read: " << ret << std::endl;
+
+        return byteswap(value_out);
+    }
+
+    boost::uint16_t peek16(boost::uint32_t addr)
+    {
+        uint32_t val = peek32(addr);
+        return boost::uint16_t(val & 0xff);
+    }
+
+    /*******************************************************************
+     * I2C
+     ******************************************************************/
+    static const size_t max_i2c_data_bytes = 64;
+
+    //TODO: make this handle EEPROM page sizes. right now you can't write over a 16-byte boundary.
+    //to accomplish this you'll have to have addr offset as a separate parameter.
+
+    void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes)
+    {
+        UHD_ASSERT_THROW(bytes.size() < max_i2c_data_bytes);
+
+        unsigned char buff[max_i2c_data_bytes];
+        std::copy(bytes.begin(), bytes.end(), buff);
+
+        int ret = _ctrl_transport->usrp_i2c_write(addr & 0xff,
+                                             buff,
+                                             bytes.size());
+
+        // TODO throw and catch i2c failures during eeprom read
+        if (iface_debug && (ret < 0))
+            std::cerr << "USRP: failed i2c write: " << ret << std::endl;
+    }
+
+    byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes)
+    {
+        UHD_ASSERT_THROW(num_bytes < max_i2c_data_bytes);
+
+        unsigned char buff[max_i2c_data_bytes];
+        int ret = _ctrl_transport->usrp_i2c_read(addr & 0xff,
+                                            buff,
+                                            num_bytes);
+
+        // TODO throw and catch i2c failures during eeprom read
+        if (iface_debug && ((ret < 0) || (unsigned)ret < (num_bytes))) {
+            std::cerr << "USRP: failed i2c read: " << ret << std::endl;
+            return byte_vector_t(num_bytes, 0xff); 
+        }
+
+        byte_vector_t out_bytes;
+        for (size_t i = 0; i < num_bytes; i++)
+            out_bytes.push_back(buff[i]);
+
+        return out_bytes; 
+    }
+
+    /*******************************************************************
+     * SPI
+     *
+     * For non-readback transactions use the SPI_WRITE command, which is
+     * simpler and uses the USB control buffer for OUT data. No data
+     * needs to be returned.
+     *
+     * For readback transactions use SPI_TRANSACT, which places up to
+     * 4 bytes of OUT data in the device request fields and uses the
+     * control buffer for IN data.
+     ******************************************************************/
+    boost::uint32_t transact_spi(int which_slave,
+                                 const spi_config_t &,
+                                 boost::uint32_t bits,
+                                 size_t num_bits,
+                                 bool readback)
+    {
+        UHD_ASSERT_THROW((num_bits <= 32) && !(num_bits % 8));
+        size_t num_bytes = num_bits / 8;
+
+        // Byteswap on num_bytes
+        unsigned char buff[4] = { 0 };
+        for (size_t i = 1; i <= num_bytes; i++)
+            buff[num_bytes - i] = (bits >> ((i - 1) * 8)) & 0xff;
+
+        if (readback) {
+            boost::uint8_t w_len_h = which_slave & 0xff;
+            boost::uint8_t w_len_l = num_bytes & 0xff;
+
+            int ret = _ctrl_transport->usrp_control_read(
+                                         VRQ_SPI_TRANSACT,
+                                         (buff[0] << 8) | (buff[1] << 0), 
+                                         (buff[2] << 8) | (buff[3] << 0),
+                                         buff,
+                                         (w_len_h << 8) | (w_len_l << 0));
+
+            if (ret < 0) {
+                std::cout << "USRP: failed SPI readback transaction: "
+                          << std::dec << ret << std::endl;
+            }
+
+            boost::uint32_t val = (((boost::uint32_t)buff[0]) <<  0) |
+                                  (((boost::uint32_t)buff[1]) <<  8) |
+                                  (((boost::uint32_t)buff[2]) << 16) |
+                                  (((boost::uint32_t)buff[3]) << 24);
+            return val; 
+        }
+        else {
+            boost::uint8_t w_index_h = which_slave & 0xff;
+            boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_0) & 0xff;
+
+            int ret =_ctrl_transport->usrp_control_write(
+                                          VRQ_SPI_WRITE,
+                                          0x00,
+                                          (w_index_h << 8) | (w_index_l << 0),
+                                          buff, num_bytes);
+
+            if (ret < 0) {
+                std::cout << "USRP: failed SPI transaction: "
+                          << std::dec << ret << std::endl;
+            }
+
+            return 0;
+        }
+    }
+
+    /*******************************************************************
+     * Firmware 
+     *
+     * This call is deprecated.
+     ******************************************************************/
+    void write_firmware_cmd(boost::uint8_t request,
+                            boost::uint16_t value,
+                            boost::uint16_t index,
+                            unsigned char *buff,
+                            boost::uint16_t length)
+    {
+        int ret;
+
+        if (request & 0x80) {
+            ret = _ctrl_transport->usrp_control_read(request,
+                                                     value,
+                                                     index,
+                                                     buff,
+                                                     length);
+        }
+        else {
+            ret = _ctrl_transport->usrp_control_write(request,
+                                                      value,
+                                                      index,
+                                                      buff,
+                                                      length);
+        }
+
+        if (ret < 0)
+            std::cerr << "USRP: failed firmware command: " << ret << std::endl;
+    }
+
+private:
+    usrp_ctrl::sptr _ctrl_transport;
+};
+
+/***********************************************************************
+ * Public Make Function
+ **********************************************************************/
+usrp1_iface::sptr usrp1_iface::make(usrp_ctrl::sptr ctrl_transport)
+{
+    return sptr(new usrp1_iface_impl(ctrl_transport));
+}
diff --git a/host/lib/usrp/usrp1/usrp1_iface.hpp b/host/lib/usrp/usrp1/usrp1_iface.hpp
new file mode 100644
index 000000000..9a3fdd6bc
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_iface.hpp
@@ -0,0 +1,100 @@
+//
+// 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_USRP1_IFACE_HPP
+#define INCLUDED_USRP1_IFACE_HPP
+
+#include <uhd/types/serial.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+#include "usrp1_ctrl.hpp"
+
+/*!
+ * The usrp1 interface class:
+ * Provides a set of functions to implementation layer.
+ * Including spi, peek, poke, control...
+ */
+class usrp1_iface : boost::noncopyable, public uhd::i2c_iface{
+public:
+    typedef boost::shared_ptr<usrp1_iface> sptr;
+
+    /*!
+     * Make a new usrp1 interface with the control transport.
+     * \param ctrl_transport the usrp controller object
+     * \return a new usrp1 interface object
+     */
+    static sptr make(usrp_ctrl::sptr ctrl_transport);
+
+    /*!
+     * Write a register (32 bits)
+     * \param addr the address
+     * \param data the 32bit data
+     */
+    virtual void poke32(boost::uint32_t addr, boost::uint32_t data) = 0;
+
+    /*!
+     * Read a register (32 bits)
+     * \param addr the address
+     * \return the 32bit data
+     */
+    virtual boost::uint32_t peek32(boost::uint32_t addr) = 0;
+
+    /*!
+     * Write a register (16 bits)
+     * \param addr the address
+     * \param data the 16bit data
+     */
+    virtual void poke16(boost::uint32_t addr, boost::uint16_t data) = 0;
+
+    /*!
+     * read a register (16 bits)
+     * \param addr the address
+     * \return the 16bit data
+     */
+    virtual boost::uint16_t peek16(boost::uint32_t addr) = 0;
+
+    /*!
+     * Perform an spi transaction.
+     * \param which_slave the slave device number
+     * \param config spi config args
+     * \param data the bits to write
+     * \param num_bits how many bits in data
+     * \param readback true to readback a value
+     * \return spi data if readback set
+     */
+    virtual boost::uint32_t transact_spi(int which_slave,
+                                         const uhd::spi_config_t &config,
+                                         boost::uint32_t data,
+                                         size_t num_bits,
+                                         bool readback) = 0;
+
+    /*!
+     * Perform a general USB firmware OUT operation
+     * \param request 
+     * \param value
+     * \param index 
+     * \param data 
+     * \return 
+     */
+    virtual void write_firmware_cmd(boost::uint8_t request,
+                                   boost::uint16_t value,
+                                   boost::uint16_t index,
+                                   unsigned char* buff,
+                                   boost::uint16_t length) = 0;
+};
+
+#endif /* INCLUDED_USRP1_IFACE_HPP */
diff --git a/host/lib/usrp/usrp1/usrp1_impl.cpp b/host/lib/usrp/usrp1/usrp1_impl.cpp
new file mode 100644
index 000000000..a6806dbc3
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_impl.cpp
@@ -0,0 +1,236 @@
+//
+// 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 "usrp1_impl.hpp"
+#include "usrp1_ctrl.hpp"
+#include "fpga_regs_standard.h"
+#include "usrp_spi_defs.h"
+#include <uhd/transport/usb_control.hpp>
+#include <uhd/usrp/device_props.hpp>
+#include <uhd/usrp/mboard_props.hpp>
+#include <uhd/utils/warning.hpp>
+#include <uhd/utils/assert.hpp>
+#include <uhd/utils/static.hpp>
+#include <uhd/utils/images.hpp>
+#include <boost/format.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/thread/thread.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace uhd::transport;
+
+const boost::uint16_t USRP1_VENDOR_ID  = 0xfffe;
+const boost::uint16_t USRP1_PRODUCT_ID = 0x0002;
+const boost::uint16_t FX2_VENDOR_ID    = 0x04b4;
+const boost::uint16_t FX2_PRODUCT_ID   = 0x8613;
+
+const std::vector<usrp1_impl::dboard_slot_t> usrp1_impl::_dboard_slots = boost::assign::list_of
+    (usrp1_impl::DBOARD_SLOT_A)(usrp1_impl::DBOARD_SLOT_B)
+;
+
+/***********************************************************************
+ * Discovery
+ **********************************************************************/
+static device_addrs_t usrp1_find(const device_addr_t &hint)
+{
+    device_addrs_t usrp1_addrs;
+
+    //return an empty list of addresses when type is set to non-usrp1
+    if (hint.has_key("type") and hint["type"] != "usrp1") return usrp1_addrs;
+
+    //extract the firmware path for the USRP1
+    std::string usrp1_fw_image;
+    try{
+        usrp1_fw_image = find_image_path(
+            hint.has_key("fw")? hint["fw"] : "usrp1_fw.ihx"
+        );
+    }
+    catch(const std::exception &e){
+        uhd::print_warning(
+            "Could not locate USRP1 firmware.\n"
+            "Please install the images package.\n"
+        );
+        return usrp1_addrs;
+    }
+    //std::cout << "USRP1 firmware image: " << usrp1_fw_image << std::endl;
+
+    boost::uint16_t vid = hint.has_key("uninit") ? FX2_VENDOR_ID : USRP1_VENDOR_ID;
+    boost::uint16_t pid = hint.has_key("uninit") ? FX2_PRODUCT_ID : USRP1_PRODUCT_ID;
+
+    //see what we got on the USB bus
+    std::vector<usb_device_handle::sptr> device_list =
+        usb_device_handle::get_device_list(vid, pid);
+
+    if(device_list.size() == 0) return usrp1_addrs; //return nothing if no USRPs found
+
+    //find the usrps and load firmware
+    BOOST_FOREACH(usb_device_handle::sptr handle, device_list) {
+            usb_control::sptr ctrl_transport = usb_control::make(handle);
+            usrp_ctrl::sptr usrp_ctrl = usrp_ctrl::make(ctrl_transport);
+            usrp_ctrl->usrp_load_firmware(usrp1_fw_image);
+    }
+
+    //get descriptors again with serial number, but using the initialized VID/PID now since we have firmware
+    vid = USRP1_VENDOR_ID;
+    pid = USRP1_PRODUCT_ID;
+    device_list = usb_device_handle::get_device_list(vid, pid);
+
+    BOOST_FOREACH(usb_device_handle::sptr handle, device_list) {
+            device_addr_t new_addr;
+            new_addr["type"] = "usrp1";
+            new_addr["serial"] = handle->get_serial();
+            usrp1_addrs.push_back(new_addr);
+    }
+
+    return usrp1_addrs;
+}
+
+/***********************************************************************
+ * Make
+ **********************************************************************/
+static device::sptr usrp1_make(const device_addr_t &device_addr)
+{
+    //extract the FPGA path for the USRP1
+    std::string usrp1_fpga_image = find_image_path(
+        device_addr.has_key("fpga")? device_addr["fpga"] : "usrp1_fpga.rbf"
+    );
+    //std::cout << "USRP1 FPGA image: " << usrp1_fpga_image << std::endl;
+
+    //try to match the given device address with something on the USB bus
+    std::vector<usb_device_handle::sptr> device_list =
+        usb_device_handle::get_device_list(USRP1_VENDOR_ID, USRP1_PRODUCT_ID);
+
+    //create data and control transports
+    usb_zero_copy::sptr data_transport;
+    usrp_ctrl::sptr usrp_ctrl;
+
+
+    BOOST_FOREACH(usb_device_handle::sptr handle, device_list) {
+        if (handle->get_serial() == device_addr["serial"]) {
+            usb_control::sptr ctrl_transport = usb_control::make(handle);
+            usrp_ctrl = usrp_ctrl::make(ctrl_transport);
+            usrp_ctrl->usrp_load_fpga(usrp1_fpga_image);
+
+            data_transport = usb_zero_copy::make(handle,        // identifier
+                                                 6,             // IN endpoint
+                                                 2,             // OUT endpoint
+                                                 2 * (1 << 20), // buffer size
+                                                 16384);        // transfer size
+            break;
+        }
+    }
+
+    //create the usrp1 implementation guts
+    return device::sptr(new usrp1_impl(data_transport, usrp_ctrl));
+}
+
+UHD_STATIC_BLOCK(register_usrp1_device){
+    device::register_device(&usrp1_find, &usrp1_make);
+}
+
+/***********************************************************************
+ * Structors
+ **********************************************************************/
+usrp1_impl::usrp1_impl(uhd::transport::usb_zero_copy::sptr data_transport,
+                       usrp_ctrl::sptr ctrl_transport)
+ : _data_transport(data_transport), _ctrl_transport(ctrl_transport)
+{
+    _iface = usrp1_iface::make(ctrl_transport);
+
+    //create clock interface
+    _clock_ctrl = usrp1_clock_ctrl::make(_iface);
+
+    //create codec interface
+    _codec_ctrls[DBOARD_SLOT_A] = usrp1_codec_ctrl::make(
+        _iface, _clock_ctrl, SPI_ENABLE_CODEC_A
+    );
+    _codec_ctrls[DBOARD_SLOT_B] = usrp1_codec_ctrl::make(
+        _iface, _clock_ctrl, SPI_ENABLE_CODEC_B
+    );
+
+    //initialize the codecs
+    codec_init();
+
+    //initialize the mboard
+    mboard_init();
+
+    //initialize the dboards 
+    dboard_init();
+
+    //initialize the dsps
+    rx_dsp_init();
+
+    //initialize the dsps
+    tx_dsp_init();
+
+    //initialize the send/recv
+    io_init();
+
+    //turn on the transmitter
+    _ctrl_transport->usrp_tx_enable(true);
+
+    //init the subdev specs
+    this->mboard_set(MBOARD_PROP_RX_SUBDEV_SPEC, subdev_spec_t());
+    this->mboard_set(MBOARD_PROP_TX_SUBDEV_SPEC, subdev_spec_t());
+}
+
+usrp1_impl::~usrp1_impl(void){
+    /* NOP */
+}
+
+bool usrp1_impl::recv_async_msg(uhd::async_metadata_t &, size_t timeout_ms){
+    //dummy fill-in for the recv_async_msg
+    boost::this_thread::sleep(boost::posix_time::milliseconds(timeout_ms));
+    return false;
+}
+
+/***********************************************************************
+ * Device Get
+ **********************************************************************/
+void usrp1_impl::get(const wax::obj &key_, wax::obj &val)
+{
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<device_prop_t>()){
+    case DEVICE_PROP_NAME:
+        val = std::string("usrp1 device");
+        return;
+
+    case DEVICE_PROP_MBOARD:
+        UHD_ASSERT_THROW(key.name == "");
+        val = _mboard_proxy->get_link();
+        return;
+
+    case DEVICE_PROP_MBOARD_NAMES:
+        val = prop_names_t(1, ""); //vector of size 1 with empty string
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
+/***********************************************************************
+ * Device Set
+ **********************************************************************/
+void usrp1_impl::set(const wax::obj &, const wax::obj &)
+{
+    UHD_THROW_PROP_SET_ERROR();
+}
diff --git a/host/lib/usrp/usrp1/usrp1_impl.hpp b/host/lib/usrp/usrp1/usrp1_impl.hpp
new file mode 100644
index 000000000..c2f693eeb
--- /dev/null
+++ b/host/lib/usrp/usrp1/usrp1_impl.hpp
@@ -0,0 +1,197 @@
+//
+// 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 "usrp1_iface.hpp"
+#include "usrp1_ctrl.hpp"
+#include "clock_ctrl.hpp"
+#include "codec_ctrl.hpp"
+#include <uhd/device.hpp>
+#include <uhd/utils/pimpl.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/types/otw_type.hpp>
+#include <uhd/types/clock_config.hpp>
+#include <uhd/types/stream_cmd.hpp>
+#include <uhd/usrp/dboard_id.hpp>
+#include <uhd/usrp/subdev_spec.hpp>
+#include <uhd/usrp/dboard_eeprom.hpp>
+#include <uhd/usrp/dboard_manager.hpp>
+#include <uhd/transport/usb_zero_copy.hpp>
+
+#ifndef INCLUDED_USRP1_IMPL_HPP
+#define INCLUDED_USRP1_IMPL_HPP
+
+/*!
+ * Simple wax obj proxy class:
+ * Provides a wax obj interface for a set and a get function.
+ * This allows us to create nested properties structures
+ * while maintaining flattened code within the implementation.
+ */
+class wax_obj_proxy : public wax::obj {
+public:
+    typedef boost::function<void(const wax::obj &, wax::obj &)>       get_t;
+    typedef boost::function<void(const wax::obj &, const wax::obj &)> set_t;
+    typedef boost::shared_ptr<wax_obj_proxy> sptr;
+
+    static sptr make(const get_t &get, const set_t &set){
+        return sptr(new wax_obj_proxy(get, set));
+    }
+
+private:
+    get_t _get; set_t _set;
+    wax_obj_proxy(const get_t &get, const set_t &set): _get(get), _set(set) {};
+    void get(const wax::obj &key, wax::obj &val) {return _get(key, val);}
+    void set(const wax::obj &key, const wax::obj &val) {return _set(key, val);}
+};
+
+/*!
+ * USRP1 implementation guts:
+ * The implementation details are encapsulated here.
+ * Handles properties on the mboard, dboard, dsps...
+ */
+class usrp1_impl : public uhd::device {
+public:
+    //! used everywhere to differentiate slots/sides...
+    enum dboard_slot_t{
+        DBOARD_SLOT_A = 'A',
+        DBOARD_SLOT_B = 'B'
+    };
+    //and a way to enumerate through a list of the above...
+    static const std::vector<dboard_slot_t> _dboard_slots;
+
+    //structors
+    usrp1_impl(uhd::transport::usb_zero_copy::sptr data_transport,
+               usrp_ctrl::sptr ctrl_transport);
+
+    ~usrp1_impl(void);
+
+    //the io interface
+    size_t send(const std::vector<const void *> &,
+                size_t,
+                const uhd::tx_metadata_t &,
+                const uhd::io_type_t &,
+                send_mode_t);
+
+    size_t recv(const std::vector<void *> &,
+                size_t, uhd::rx_metadata_t &,
+                const uhd::io_type_t &,
+                recv_mode_t,
+                size_t timeout);
+
+    size_t get_max_send_samps_per_packet(void) const { return 0; }
+    size_t get_max_recv_samps_per_packet(void) const { return 0; }
+    bool recv_async_msg(uhd::async_metadata_t &, size_t);
+
+private:
+    /*!
+     * Make a usrp1 dboard interface.
+     * \param iface the usrp1 interface object
+     * \param clock the clock control interface
+     * \param codec the codec control interface
+     * \param dboard_slot the slot identifier
+     * \param rx_dboard_id the db id for the rx board (used for evil dbsrx purposes)
+     * \return a sptr to a new dboard interface
+     */
+    static uhd::usrp::dboard_iface::sptr make_dboard_iface(
+        usrp1_iface::sptr iface,
+        usrp1_clock_ctrl::sptr clock,
+        usrp1_codec_ctrl::sptr codec,
+        dboard_slot_t dboard_slot,
+        const uhd::usrp::dboard_id_t &rx_dboard_id
+    );
+
+    //interface to ioctls and file descriptor
+    usrp1_iface::sptr _iface;
+
+    //handle io stuff
+    UHD_PIMPL_DECL(io_impl) _io_impl;
+    void io_init(void);
+    void issue_stream_cmd(const uhd::stream_cmd_t &stream_cmd);
+    void handle_overrun(size_t);
+
+    //underrun and overrun poll intervals
+    size_t _rx_samps_per_poll_interval;
+    size_t _tx_samps_per_poll_interval; 
+
+    //otw types
+    uhd::otw_type_t _rx_otw_type;
+    uhd::otw_type_t _tx_otw_type;
+
+    //configuration shadows
+    uhd::clock_config_t _clock_config;
+    uhd::usrp::subdev_spec_t _rx_subdev_spec, _tx_subdev_spec;
+
+    //clock control
+    usrp1_clock_ctrl::sptr _clock_ctrl;
+
+    //ad9862 codec control interface
+    uhd::dict<dboard_slot_t, usrp1_codec_ctrl::sptr> _codec_ctrls;
+
+    //codec properties interfaces
+    void codec_init(void);
+    void rx_codec_get(const wax::obj &, wax::obj &, dboard_slot_t);
+    void rx_codec_set(const wax::obj &, const wax::obj &, dboard_slot_t);
+    void tx_codec_get(const wax::obj &, wax::obj &, dboard_slot_t);
+    void tx_codec_set(const wax::obj &, const wax::obj &, dboard_slot_t);
+    uhd::dict<dboard_slot_t, wax_obj_proxy::sptr> _rx_codec_proxies, _tx_codec_proxies;
+
+    //device functions and settings
+    void get(const wax::obj &, wax::obj &);
+    void set(const wax::obj &, const wax::obj &);
+
+    //mboard functions and settings
+    void mboard_init(void);
+    void mboard_get(const wax::obj &, wax::obj &);
+    void mboard_set(const wax::obj &, const wax::obj &);
+    wax_obj_proxy::sptr _mboard_proxy;
+
+    //xx dboard functions and settings
+    void dboard_init(void);
+    uhd::dict<dboard_slot_t, uhd::usrp::dboard_manager::sptr> _dboard_managers;
+    uhd::dict<dboard_slot_t, uhd::usrp::dboard_iface::sptr> _dboard_ifaces;
+
+    //rx dboard functions and settings
+    uhd::dict<dboard_slot_t, uhd::usrp::dboard_eeprom_t> _rx_db_eeproms;
+    void rx_dboard_get(const wax::obj &, wax::obj &, dboard_slot_t);
+    void rx_dboard_set(const wax::obj &, const wax::obj &, dboard_slot_t);
+    uhd::dict<dboard_slot_t, wax_obj_proxy::sptr> _rx_dboard_proxies;
+
+    //tx dboard functions and settings
+    uhd::dict<dboard_slot_t, uhd::usrp::dboard_eeprom_t> _tx_db_eeproms;
+    void tx_dboard_get(const wax::obj &, wax::obj &, dboard_slot_t);
+    void tx_dboard_set(const wax::obj &, const wax::obj &, dboard_slot_t);
+    uhd::dict<dboard_slot_t, wax_obj_proxy::sptr> _tx_dboard_proxies;
+
+    //rx dsp functions and settings
+    void rx_dsp_init(void);
+    void rx_dsp_get(const wax::obj &, wax::obj &);
+    void rx_dsp_set(const wax::obj &, const wax::obj &);
+    double _rx_dsp_freq; size_t _rx_dsp_decim;
+    wax_obj_proxy::sptr _rx_dsp_proxy;
+
+    //tx dsp functions and settings
+    void tx_dsp_init(void);
+    void tx_dsp_get(const wax::obj &, wax::obj &);
+    void tx_dsp_set(const wax::obj &, const wax::obj &);
+    double _tx_dsp_freq; size_t _tx_dsp_interp;
+    wax_obj_proxy::sptr _tx_dsp_proxy;
+
+    //transports
+    uhd::transport::usb_zero_copy::sptr _data_transport;
+    usrp_ctrl::sptr _ctrl_transport;
+};
+
+#endif /* INCLUDED_USRP1_IMPL_HPP */