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Enable double scan for cga videomodes in vga

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1879
This commit is contained in:
Sjoerd van der Berg 2004-07-08 17:13:10 +00:00
parent 8126b4002c
commit f84843769b
1 changed files with 6 additions and 3 deletions
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9
src/ints/int10_modes.cpp
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@ -20,9 +20,9 @@ VideoModeBlock ModeList_VGA[]={
{ 0x001 ,M_TEXT ,320 ,400 ,40 ,25 ,9 ,16 ,8 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x002 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB8000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x003 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB8000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x004 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x005 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x006 ,M_CGA2 ,640 ,200 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK },
{ 0x004 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE},
{ 0x005 ,M_CGA4 ,320 ,200 ,40 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE},
{ 0x006 ,M_CGA2 ,640 ,200 ,80 ,25 ,8 ,8 ,4 ,0xB8000 ,0x0800 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE },
{ 0x007 ,M_TEXT ,640 ,400 ,80 ,25 ,9 ,16 ,4 ,0xB0000 ,0x1000 ,100 ,449 ,80 ,400 ,0 },
{ 0x00D ,M_EGA16 ,320 ,200 ,40 ,25 ,8 ,8 ,8 ,0xA0000 ,0x2000 ,50 ,449 ,40 ,400 ,_EGA_HALF_CLOCK | _EGA_LINE_DOUBLE },
@ -465,6 +465,9 @@ bool INT10_SetVideoMode(Bitu mode) {
case M_LIN8:
underline=0x60; //Seems to enable the every 4th clock on my s3
break;
case M_CGA4:
max_scanline|=1;
break;
}
IO_Write(crtc_base,0x09);IO_Write(crtc_base+1,max_scanline);
IO_Write(crtc_base,0x14);IO_Write(crtc_base+1,underline);