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This commit is contained in:
Akamaki
2025-02-18 22:46:18 +09:00
parent 5314f519ad
commit 2c78e7bb2f
4 changed files with 23 additions and 7 deletions
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src/floppy/fdc.c
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@@ -740,7 +740,7 @@ fdc_write(uint16_t addr, uint8_t val, void *priv)
drive = real_drive(fdc, fdc->dor & 3);
fdc_update_rwc(fdc, drive, (val & 0x30) >> 4);
}
/* Bit 2: FIFO test mode (PS/55 only? This is not documented in neither the PS/2 HITR nor the 82077AA datasheet.)
/* Bit 2: FIFO test mode (PS/55 5550-S,T only. Undocumented)
The Power-on Self Test of PS/55 writes and verifies 8 bytes of FIFO buffer through I/O 3F5h.
If it fails, then floppy drives will be treated as DD drives. */
if (fdc->flags & FDC_FLAG_PS2_MCA) {