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https://github.com/NawfalMotii79/PLFM_RADAR.git
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Jason
98ec9cb6a5
The WR_DOPPLER_DATA emit advanced mag_rd_addr at end of phase 1 (LSB byte) but BRAM has 1-cycle read latency, so phase 0 of the next pair re-read the prior cell. Result: wire pair K = (HIGH(bram[K-1]), LOW(bram[K])) — adjacent cells silently swapped their high bytes whenever the high byte differed. Footprint was 30 of 24576 cells (peak rows + high-byte transitions in the noise floor); max diff 6656 LSB on the target row. Fix: advance the BRAM read address at end of phase 0 (MSB) so BRAM has 2 cycles between addr-set and the next pair's MSB read. Same pattern existed in WR_RANGE_DATA — silently broken (regression skips range stream); fixed for symmetry. After fix, both iverilog and remote Vivado 2025.2 xsim emit a bit-exact match against the Python golden. Tighten E12.14 / E12.6.b to strict zero tolerance and rename the "PR-AA pending" notes to indicate the fix has landed. Target-cell window check (E12.15) now points at the exact (rb, db) bin. Verification: * iverilog A6 in-TB: doppler_mismatches=0/24576 (16/16 PASS) * iverilog A6 parse strict: 28/28 PASS * Vivado 2025.2 xsim A6 in-TB: doppler_mismatches=0/24576 (16/16 PASS) * Vivado 2025.2 xsim A6 parse strict: 28/28 PASS * Full regression: 41 passed, 0 failed, 0 skipped / 41 total