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Fix the tandy crt page register to also work in text modes

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1839
This commit is contained in:
Sjoerd van der Berg 2004-06-18 08:16:43 +00:00
parent 2d644554c4
commit 35b0cc060c
1 changed files with 7 additions and 8 deletions
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15
src/hardware/vga_draw.cpp
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@ -35,7 +35,8 @@ static Bit8u TempLine[1280];
static Bit8u * VGA_Draw_1BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
line*=8*1024;Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=vga.draw.blocks;x>0;x--) {
Bitu val=vga.mem.linear[vidstart+line];vidstart=(vidstart+1)&0x1fff;
Bitu val=vga.mem.linear[vidstart+line];
vidstart=(vidstart+1)&0x1dfff;
*draw++=CGA_2_Table[val >> 4];
*draw++=CGA_2_Table[val & 0xf];
}
@ -45,7 +46,8 @@ static Bit8u * VGA_Draw_1BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
static Bit8u * VGA_Draw_2BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
line*=8*1024;Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=0;x<vga.draw.blocks;x++) {
Bitu val=vga.mem.linear[vidstart+line];vidstart=(vidstart+1)&0x1fff;
Bitu val=vga.mem.linear[vidstart+line];
vidstart=(vidstart+1)&0x1dfff;
*draw++=CGA_4_Table[val];
}
return TempLine;
@ -57,7 +59,7 @@ static Bit8u convert16[16]={
};
static Bit8u * VGA_Draw_4BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
Bit8u * reader=&vga.mem.linear[(vga.tandy.disp_bank << 14) + vidstart + (line * 8 * 1024)];
Bit8u * reader=&vga.mem.linear[vidstart + (line * 8 * 1024)];
Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=0;x<vga.draw.blocks;x++) {
Bitu val1=*reader++;Bitu val2=*reader++;
@ -70,7 +72,7 @@ static Bit8u * VGA_Draw_4BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
}
static Bit8u * VGA_Draw_4BPP_Line_Double(Bitu vidstart,Bitu panning,Bitu line) {
Bit8u * reader=&vga.mem.linear[(vga.tandy.disp_bank << 14) + vidstart + (line * 8 * 1024)];
Bit8u * reader=&vga.mem.linear[vidstart + (line * 8 * 1024)];
Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=0;x<vga.draw.blocks;x++) {
Bitu val1=*reader++;Bitu val2=*reader++;
@ -131,10 +133,6 @@ static Bit8u * VGA_Draw_VGA_Line_HWMouse(Bitu vidstart, Bitu panning, Bitu line)
}
}
static Bit32u FontMask[2]={0xffffffff,0x0};
static Bit8u * VGA_TEXT_Draw_Line(Bitu vidstart,Bitu panning,Bitu line) {
Bit32u * draw=(Bit32u *)TempLine;
@ -233,6 +231,7 @@ static void VGA_VerticalTimer(Bitu val) {
vga.draw.address=(vga.draw.address*2)&0x1fff;
break;
}
if (machine==MCH_TANDY) vga.draw.address+=vga.tandy.disp_bank << 14;
if (RENDER_StartUpdate()) {
PIC_AddEvent(VGA_DrawPart,vga.draw.micro.parts,vga.draw.parts_lines);
}