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cah 1f4b62454f docs: add Run 5-7 hardening results and lessons learned

- Run 5: syndrome pipeline with serial popcount (no improvement)
- Run 6: balanced popcount adder tree — TT timing MET at 50 MHz
- Run 7 series (8 attempts): LAYER_WRITE pipeline exploration
  - LAYER_WRITE split not viable (cell explosion / PnR divergence)
  - Yosys synthesis non-determinism documented
  - Hold margin sensitivity (0.4/0.2 vs 0.5/0.3) identified
  - Run 7h reproduces Run 6 by reusing golden synthesis netlist

Key finding: balanced_popcount synthesis netlist is the golden reference
for all future PnR iterations.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-10 19:42:23 -06:00

data

feat: add test vector generation for RTL verification

2026-02-25 18:36:26 -07:00

docs

docs: add Run 5-7 hardening results and lessons learned

2026-03-10 19:42:23 -06:00

model

test: add vector-driven Verilator testbench with Python model cross-check

2026-02-25 19:50:09 -07:00

rtl

fix(decoder): split CN_UPDATE into pipelined CN_STAGE1/CN_STAGE2