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cirrusfb: proper "Attribute Controller Toggle Readback" register behaviour

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(Marcelo Tosatti)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4386 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-05-08 12:21:27 +00:00
parent a8c3320434
commit ca896ef389
1 changed files with 3 additions and 1 deletions
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hw/cirrus_vga.c
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@ -1626,13 +1626,15 @@ cirrus_hook_read_cr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
case 0x17: // Standard VGA case 0x17: // Standard VGA
case 0x18: // Standard VGA case 0x18: // Standard VGA
return CIRRUS_HOOK_NOT_HANDLED; return CIRRUS_HOOK_NOT_HANDLED;
case 0x24: // Attribute Controller Toggle Readback (R)
*reg_value = (s->ar_flip_flop << 7);
break;
case 0x19: // Interlace End case 0x19: // Interlace End
case 0x1a: // Miscellaneous Control case 0x1a: // Miscellaneous Control
case 0x1b: // Extended Display Control case 0x1b: // Extended Display Control
case 0x1c: // Sync Adjust and Genlock case 0x1c: // Sync Adjust and Genlock
case 0x1d: // Overlay Extended Control case 0x1d: // Overlay Extended Control
case 0x22: // Graphics Data Latches Readback (R) case 0x22: // Graphics Data Latches Readback (R)
case 0x24: // Attribute Controller Toggle Readback (R)
case 0x25: // Part Status case 0x25: // Part Status
case 0x27: // Part ID (R) case 0x27: // Part ID (R)
*reg_value = s->cr[reg_index]; *reg_value = s->cr[reg_index];