External FIFO tested in simulation and on USRP2 from decimation 64->8 with current head UHD code.

Apparently operation is "flawless" but more regression and corner case regression could and should be done.
Tristate drivers have been added at the top level of the hierarchy for the SRAM databus as is considered good
practice for both Xilinx and ASIC design flows and so both top level and core fils have been touched.

1 files changed, 130 insertions, 0 deletions

diff --git a/usrp2/extramfifo/ila.xco b/usrp2/extramfifo/ila.xco
new file mode 100644
index 000000000..c8d4d2f75
--- /dev/null
+++ b/usrp2/extramfifo/ila.xco
@@ -0,0 +1,130 @@
+##############################################################
+#
+# Xilinx Core Generator version 12.1
+# Date: Wed Jul 21 18:51:14 2010
+#
+##############################################################
+#
+#  This file contains the customisation parameters for a
+#  Xilinx CORE Generator IP GUI. It is strongly recommended
+#  that you do not manually alter this file as it may cause
+#  unexpected and unsupported behavior.
+#
+##############################################################
+#
+# BEGIN Project Options
+SET addpads = false
+SET asysymbol = true
+SET busformat = BusFormatAngleBracketNotRipped
+SET createndf = false
+SET designentry = Verilog
+SET device = xc3s2000
+SET devicefamily = spartan3
+SET flowvendor = Other
+SET formalverification = false
+SET foundationsym = false
+SET implementationfiletype = Ngc
+SET package = fg456
+SET removerpms = false
+SET simulationfiles = Structural
+SET speedgrade = -5
+SET verilogsim = true
+SET vhdlsim = false
+# END Project Options
+# BEGIN Select
+SELECT ILA_(ChipScope_Pro_-_Integrated_Logic_Analyzer) family Xilinx,_Inc. 1.03.a
+# END Select
+# BEGIN Parameters
+CSET component_name=ila
+CSET counter_width_1=Disabled
+CSET counter_width_10=Disabled
+CSET counter_width_11=Disabled
+CSET counter_width_12=Disabled
+CSET counter_width_13=Disabled
+CSET counter_width_14=Disabled
+CSET counter_width_15=Disabled
+CSET counter_width_16=Disabled
+CSET counter_width_2=Disabled
+CSET counter_width_3=Disabled
+CSET counter_width_4=Disabled
+CSET counter_width_5=Disabled
+CSET counter_width_6=Disabled
+CSET counter_width_7=Disabled
+CSET counter_width_8=Disabled
+CSET counter_width_9=Disabled
+CSET data_port_width=0
+CSET data_same_as_trigger=true
+CSET enable_storage_qualification=true
+CSET enable_trigger_output_port=false
+CSET exclude_from_data_storage_1=false
+CSET exclude_from_data_storage_10=false
+CSET exclude_from_data_storage_11=false
+CSET exclude_from_data_storage_12=false
+CSET exclude_from_data_storage_13=false
+CSET exclude_from_data_storage_14=false
+CSET exclude_from_data_storage_15=false
+CSET exclude_from_data_storage_16=false
+CSET exclude_from_data_storage_2=false
+CSET exclude_from_data_storage_3=false
+CSET exclude_from_data_storage_4=false
+CSET exclude_from_data_storage_5=false
+CSET exclude_from_data_storage_6=false
+CSET exclude_from_data_storage_7=false
+CSET exclude_from_data_storage_8=false
+CSET exclude_from_data_storage_9=false
+CSET match_type_1=basic
+CSET match_type_10=basic
+CSET match_type_11=basic
+CSET match_type_12=basic
+CSET match_type_13=basic
+CSET match_type_14=basic
+CSET match_type_15=basic
+CSET match_type_16=basic
+CSET match_type_2=basic
+CSET match_type_3=basic
+CSET match_type_4=basic
+CSET match_type_5=basic
+CSET match_type_6=basic
+CSET match_type_7=basic
+CSET match_type_8=basic
+CSET match_type_9=basic
+CSET match_units_1=1
+CSET match_units_10=1
+CSET match_units_11=1
+CSET match_units_12=1
+CSET match_units_13=1
+CSET match_units_14=1
+CSET match_units_15=1
+CSET match_units_16=1
+CSET match_units_2=1
+CSET match_units_3=1
+CSET match_units_4=1
+CSET match_units_5=1
+CSET match_units_6=1
+CSET match_units_7=1
+CSET match_units_8=1
+CSET match_units_9=1
+CSET max_sequence_levels=1
+CSET number_of_trigger_ports=4
+CSET sample_data_depth=512
+CSET sample_on=Rising
+CSET trigger_port_width_1=8
+CSET trigger_port_width_10=8
+CSET trigger_port_width_11=8
+CSET trigger_port_width_12=8
+CSET trigger_port_width_13=8
+CSET trigger_port_width_14=8
+CSET trigger_port_width_15=8
+CSET trigger_port_width_16=8
+CSET trigger_port_width_2=8
+CSET trigger_port_width_3=8
+CSET trigger_port_width_4=4
+CSET trigger_port_width_5=8
+CSET trigger_port_width_6=8
+CSET trigger_port_width_7=8
+CSET trigger_port_width_8=8
+CSET trigger_port_width_9=8
+CSET use_rpms=true
+# END Parameters
+GENERATE
+# CRC: 66151c7c