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Implemented the remaining things that were missing on the Toshiba T1x00 FDC.

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OBattler
2018-09-22 18:17:24 +02:00
parent 492da45c31
commit 6256e193d6
1 changed files with 12 additions and 5 deletions
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17
src/floppy/fdc.c
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@@ -9,7 +9,7 @@
* Implementation of the NEC uPD-765 and compatible floppy disk
* controller.
*
* Version: @(#)fdc.c 1.0.10 2018/09/22
* Version: @(#)fdc.c 1.0.11 2018/09/22
*
* Authors: Miran Grca, <mgrca8@gmail.com>
* Sarah Walker, <tommowalker@tommowalker.co.uk>
@@ -1188,7 +1188,7 @@ fdc_write(uint16_t addr, uint8_t val, void *priv)
}
return;
case 7:
if (!(fdc->flags & FDC_FLAG_AT))
if (!(fdc->flags & FDC_FLAG_TOSHIBA) && !(fdc->flags & FDC_FLAG_AT))
return;
fdc->rate = val & 0x03;
if (fdc->flags & FDC_FLAG_PS1)
@@ -1334,13 +1334,20 @@ fdc_read(uint16_t addr, void *priv)
} else
ret = 0x00;
} else {
if (fdc->dor & (0x10 << drive))
ret = (fdd_changed[drive] || drive_empty[drive]) ? 0x80 : 0x00;
else
if (fdc->dor & (0x10 << drive)) {
if ((drive == 1) && (fdc->flags & FDC_FLAG_TOSHIBA))
ret = 0x00;
else
ret = (fdd_changed[drive] || drive_empty[drive]) ? 0x80 : 0x00;
} else
ret = 0x00;
if (fdc->flags & FDC_FLAG_DISKCHG_ACTLOW) /*PC2086/3086 seem to reverse this bit*/
ret ^= 0x80;
/* 0 = ????, 1 = Ext. FDD off, 2 = Ext. FDD = FDD A, 3 = Ext. FDD = FDD B */
if (fdc->flags & FDC_FLAG_TOSHIBA)
ret |= (3 << 5);
ret |= 0x01;
}