Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-06-28 17:01:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTVDM]

Browse source 
Implement the VGA AC Color Select register.
Implement INT 0x10, AH = 0x10, subfunction AL = 0x13.


svn path=/trunk/; revision=71992
This commit is contained in:
Aleksandar Andrejevic 2016-07-24 18:25:50 +00:00
parent 2a6c4f1119
commit 45fe0d3a21
2 changed files with 45 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
View file

@ -3379,6 +3379,31 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
break;
}
/* Set Video DAC Color Page */
case 0x13:
{
if (getBL() == 0)
{
/* Set the highest bit of the AC Mode Control register to BH */
IOReadB(VGA_INSTAT1_READ);
IOWriteB(VGA_AC_INDEX, VGA_AC_CONTROL_REG);
IOWriteB(VGA_AC_WRITE, (IOReadB(VGA_AC_READ) & 0x7F) | (getBH() << 7));
}
else if (getBL() == 1)
{
/* Set the AC Color Select register to BH */
IOReadB(VGA_INSTAT1_READ);
IOWriteB(VGA_AC_INDEX, VGA_AC_COLOR_SEL_REG);
IOWriteB(VGA_AC_WRITE, getBH());
}
else
{
DPRINT1("BIOS Palette Control Sub-sub-command BL = 0x%02X INVALID\n", getBL());
}
break;
}
/* Get Individual DAC Register */
case 0x15:
{

22
reactos/subsystems/mvdm/ntvdm/hardware/video/svga.c
View file

@ -946,8 +946,26 @@ static VOID VgaUpdateFramebuffer(VOID)
* if external palette access is disabled, otherwise (in case
* of palette loading) it is a blank pixel.
*/
PixelData = (VgaAcPalDisable ? VgaAcRegisters[PixelData & 0x0F]
: 0);
if (VgaAcPalDisable)
{
if (!(VgaAcRegisters[VGA_AC_CONTROL_REG] & VGA_AC_CONTROL_P54S))
{
/* Bits 4 and 5 are taken from the palette register */
PixelData = ((VgaAcRegisters[VGA_AC_COLOR_SEL_REG] << 4) & 0xC0)
| (VgaAcRegisters[PixelData & 0x0F] & 0x3F);
}
else
{
/* Bits 4 and 5 are taken from the color select register */
PixelData = (VgaAcRegisters[VGA_AC_COLOR_SEL_REG] << 4)
| (VgaAcRegisters[PixelData & 0x0F] & 0x0F);
}
}
else
{
PixelData = 0;
}
}
/* Take into account DoubleVision mode when checking for pixel updates */