Second bank promoted to sd_bram. Read port muxed by phase (ST_M acc t_hat
addr / ST_E ek-half byteEncode addr / dbg). The shared mux-registers that fed
both bank_se and bank_t were split: the bank_se half stays a manual reg
(m_eacc_rd / e_se_rd), the bank_t half uses sd_bram's internal read register
(bt_rd_data) -- same 1-cycle latency, so the j-select (m_jq) and ST_E coeff
select (e_rd_coeff) just pick between the two registered outputs. RMW safe:
acc read addr (m_oidx+1) leads write addr (m_oidx), no same-cycle alias.
Write port combinational. 11/11 KAT PASS incl. K=3/4 deep accumulate.
FallenSigh
5cfe8c74ca