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Let CGA Modes use vga timings

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1639
This commit is contained in:
Sjoerd van der Berg 2004-02-02 09:27:34 +00:00
parent 3c2770a8f0
commit f449c47830
2 changed files with 24 additions and 28 deletions
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7
src/hardware/vga_draw.cpp
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@ -293,10 +293,10 @@ void VGA_SetupDrawing(void) {
break;
case M_CGA4:
case M_CGA16: //Let is use 320x200 res and double pixels myself
aspect_ratio/=2; //Hack for half the vtotal in cga mode
scaleh=2;scalew=2;
vga.draw.blocks=width;
width<<=2;
height/=2;
pitch=width;
vga.draw.lines_scaled=1;
vga.draw.address_line_total=2;
@ -304,8 +304,7 @@ void VGA_SetupDrawing(void) {
VGA_DrawLine=(vga.mode == M_CGA4) ? VGA_CGA4_Draw_Line : VGA_CGA16_Draw_Line;
break;
case M_CGA2:
aspect_ratio/=2; //Hack for half the vtotal in cga mode
scaleh=2;
scaleh=2;height/=2;
vga.draw.address_line_total=2;
vga.draw.blocks=width;
width<<=3;
@ -332,7 +331,7 @@ void VGA_SetupDrawing(void) {
vga.draw.address_add=160;
vga.draw.address_line_total=4;
vga.draw.lines_scaled=1;
width<<=2;
width<<=2;height/=2;
pitch=width;
VGA_DrawLine=VGA_TANDY16_Draw_Line;
break;