Matthew Stanley 2767018b46 fix: SIO pad detection + input override + CARD driver seeds ...

Root cause: BIOS pad handler polls I_STAT bit 7 waiting for SIO ACK
IRQ. sio_tick() was only called from psx_check_interrupts and SIO
register accesses, but I_STAT reads go through memory.c which never
called sio_tick(). The IRQ countdown was stuck during the polling
loop, causing the BIOS to time out and report "no pad found" (0xFF).

Additionally, sio_tick() in psx_check_interrupts fired the IRQ too
early — during BIOS delay loops BEFORE I_STAT bit 7 was cleared —
so the BIOS cleared it and never saw it re-appear.

Fixes:
- memory.c: Call sio_tick() on I_STAT reads (32/16/8-bit paths)
- interrupts.c: Remove sio_tick() from psx_check_interrupts
- debug_server.c: Don't clear input override on TCP disconnect
  (was wiping override before next VBlank could read it)
- debug_server.c: sio_state reports real pad_buttons via getter
- sio.c/sio.h: Add sio_get_pad_buttons() for debug server
- seeds: Add 20 new seeds for shell input and CARD driver functions

Result: Pad buffer at 0x80083E30 shows status=0x00 (pad found),
type=0x41 (digital), buttons reflect keyboard/override state.
Only 5 COP2/GTE dispatch misses remain (Phase 5).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-23 11:22:39 -07:00

..

include

fix: SIO pad detection + input override + CARD driver seeds

2026-04-23 11:22:39 -07:00

src

fix: SIO pad detection + input override + CARD driver seeds

2026-04-23 11:22:39 -07:00

CMakeLists.txt

feat: native PSX oracle — R3000A interpreter + dual CMake targets

2026-04-21 21:34:28 -07:00