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Matthew Stanley
c586badcb4
Sibling gap to the 0x08 (Stop) fix: cmd 0x07 (MotorOn) also had no case in the CDROM command switch and fell through to default -> CDIRQ_ERROR (INT5) with no error code. A game that spins the motor up (e.g. after a Stop) and waits for the MotorOn completion IRQ would never see it. Model MotorOn faithfully per psx-spx "07h MotorOn": INT3 (ACK) now with the current status, then a pending INT2 (COMPLETE) after spin-up with the motor bit set. If the motor is already spinning the hardware rejects it with INT5 (ERROR) + error code 0x20 — replicated. Matching case added in process_pending, mirroring the Stop completion. Cross-title safe: strictly additive — every game previously got a bare INT5 for MotorOn; the success path now completes correctly and the already-on rejection now carries the documented error code. Tsumu itself does not issue MotorOn (verified: still progresses past the Stop wedge, gp0_draw climbing), so this is reasoned from psx-spx + the Stop handler, not visually exercised. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>