Revision b863d514 hw/cirrus_vga.c
| b/hw/cirrus_vga.c | ||
|---|---|---|
| 1583 | 1583 |
* |
| 1584 | 1584 |
***************************************/ |
| 1585 | 1585 |
|
| 1586 |
static int |
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| 1587 |
cirrus_hook_read_cr(CirrusVGAState * s, unsigned reg_index, int *reg_value) |
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| 1586 |
static int cirrus_vga_read_cr(CirrusVGAState * s, unsigned reg_index) |
|
| 1588 | 1587 |
{
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switch (reg_index) {
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| 1590 | 1589 |
case 0x00: // Standard VGA |
| ... | ... | |
| 1612 | 1611 |
case 0x16: // Standard VGA |
| 1613 | 1612 |
case 0x17: // Standard VGA |
| 1614 | 1613 |
case 0x18: // Standard VGA |
| 1615 |
return CIRRUS_HOOK_NOT_HANDLED;
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|
| 1614 |
return s->vga.cr[s->vga.cr_index];
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|
| 1616 | 1615 |
case 0x24: // Attribute Controller Toggle Readback (R) |
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*reg_value = (s->vga.ar_flip_flop << 7); |
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break; |
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return (s->vga.ar_flip_flop << 7); |
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| 1619 | 1617 |
case 0x19: // Interlace End |
| 1620 | 1618 |
case 0x1a: // Miscellaneous Control |
| 1621 | 1619 |
case 0x1b: // Extended Display Control |
| ... | ... | |
| 1624 | 1622 |
case 0x22: // Graphics Data Latches Readback (R) |
| 1625 | 1623 |
case 0x25: // Part Status |
| 1626 | 1624 |
case 0x27: // Part ID (R) |
| 1627 |
*reg_value = s->vga.cr[reg_index]; |
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break; |
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return s->vga.cr[s->vga.cr_index]; |
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| 1629 | 1626 |
case 0x26: // Attribute Controller Index Readback (R) |
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*reg_value = s->vga.ar_index & 0x3f;
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return s->vga.ar_index & 0x3f;
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|
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break; |
| 1632 | 1629 |
default: |
| 1633 | 1630 |
#ifdef DEBUG_CIRRUS |
| 1634 | 1631 |
printf("cirrus: inport cr_index %02x\n", reg_index);
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| 1635 |
*reg_value = 0xff; |
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| 1636 | 1632 |
#endif |
| 1637 |
break;
|
|
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return 0xff;
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|
| 1638 | 1634 |
} |
| 1639 |
|
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return CIRRUS_HOOK_HANDLED; |
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| 1641 | 1635 |
} |
| 1642 | 1636 |
|
| 1643 | 1637 |
static int |
| ... | ... | |
| 2719 | 2713 |
break; |
| 2720 | 2714 |
case 0x3b5: |
| 2721 | 2715 |
case 0x3d5: |
| 2722 |
if (cirrus_hook_read_cr(c, s->cr_index, &val)) |
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break; |
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val = s->cr[s->cr_index]; |
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val = cirrus_vga_read_cr(c, s->cr_index); |
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| 2725 | 2717 |
#ifdef DEBUG_VGA_REG |
| 2726 | 2718 |
printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
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| 2727 | 2719 |
#endif |
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