Found while building the vcd-wrapped widget (#1385, epic #1377).
What: fpga/openxc7-synth/tmu.v:146 loads $readmemb({MEM_FILE_PREFIX, "_wide.mem"}, bank_mem_wide) -- the single (2*K)-bit "WIDE BRAM" layout. The directory holds only the old per-bank files (tmu_test_w_b00.mem .. tmu_test_w_b15.mem, tmu_w_b{1,2,3}_{up,down}_bNN.mem); no *_wide.mem is committed.
Effect (measured): with Icarus Verilog 12.0,
iverilog -g2012 -s tmu_tb -o sim.vvp fpga/openxc7-synth/tmu_tb.v fpga/openxc7-synth/tmu.v
vvp -n sim.vvp
tmu_tb passes 0 of 8 checks, with X outputs (the weight memory is never loaded). hardware/rtl-root/tmu_tb.v has the same dependency.
Fix options: commit the *_wide.mem files generated from the per-bank files (bank b00 in the low 2 bits, per the comment at tmu.v:138-141), or have the testbench generate them; then rerun tmu_tb and record 8 of 8.
The widget ships this run labelled "fails in this repo" and will be re-recorded when this is fixed.
Other testbenches seen failing in the same sweep (not investigated): tb_hslm_ternary_mac (2 errors, X neurons), embedding_lookup_tb ("FAILED: 2431 errors in 6 tests").
Found while building the
vcd-wrappedwidget (#1385, epic #1377).What:
fpga/openxc7-synth/tmu.v:146loads$readmemb({MEM_FILE_PREFIX, "_wide.mem"}, bank_mem_wide)-- the single (2*K)-bit "WIDE BRAM" layout. The directory holds only the old per-bank files (tmu_test_w_b00.mem..tmu_test_w_b15.mem,tmu_w_b{1,2,3}_{up,down}_bNN.mem); no*_wide.memis committed.Effect (measured): with Icarus Verilog 12.0,
tmu_tbpasses 0 of 8 checks, with X outputs (the weight memory is never loaded).hardware/rtl-root/tmu_tb.vhas the same dependency.Fix options: commit the
*_wide.memfiles generated from the per-bank files (bank b00 in the low 2 bits, per the comment at tmu.v:138-141), or have the testbench generate them; then reruntmu_tband record 8 of 8.The widget ships this run labelled "fails in this repo" and will be re-recorded when this is fixed.
Other testbenches seen failing in the same sweep (not investigated):
tb_hslm_ternary_mac(2 errors, X neurons),embedding_lookup_tb("FAILED: 2431 errors in 6 tests").