pub const DEFAULT_SETUP_SPINS: u32 = _; // 1_024u32Expand description
Setup delay (bounded STAT reads) after asserting the select line, before the
first clock. The original SCPH-1200 gives NO response without it and a clean
5A41 digital read with it; fast clones tolerate it either way (silicon,
2026-06-22). The on-console sweep put the floor between 384 (no response) and
768 (clean) under a 5-polls-per-frame stress harder than the in-game one poll
per frame, so 1024 is a comfortable margin while keeping the per-poll
busy-wait small. Production retains this measured setup margin and also
waits for each non-final byte’s ACK readiness; the BIOS likewise paces bytes.