FallenSigh 4d3adc6b57 refactor(kg): split polymem into 3 banks {a, se, t} (async, stage 2a) ...

Replace the single async-read polymem[0:28*256-1] with 3 polynomial-indexed
banks (bank_a A_hat / bank_se s_hat||e_hat / bank_t t_hat), addressed by
abs_slot - base_slot. Still async-read here -- a pure refactor that validates
bank sizing and base-relative addressing with zero timing change before
stage 2b converts them to registered sd_bram + read-ahead pipelines.

11/11 KAT PASS, byte-exact, 0 file-not-found.

2026-06-28 15:55:26 +08:00

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