valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

add true 720x400/360x400 vga textmodes for vga-only setting (8+1x16 font)

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3000
This commit is contained in:
Sebastian Strohhäcker 2007-09-28 15:40:46 +00:00
parent e7db5a262e
commit b0855c4d63
1 changed files with 41 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
src/hardware/vga_draw.cpp
View file

@ -407,6 +407,40 @@ skip_cursor:
return TempLine;
}
static Bit8u * VGA_TEXT_Draw_Line_9(Bitu vidstart, Bitu line) {
Bits font_addr;
Bit8u * draw=(Bit8u *)TempLine;
const Bit8u *vidmem = &vga.tandy.draw_base[vidstart];
Bitu bitpos=0;
for (Bitu cx=0;cx<vga.draw.blocks;cx++) {
Bit8u chr=vidmem[cx*2];
Bit8u col=vidmem[cx*2+1];
Bit8u font=vga.draw.font_tables[(col >> 3)&1][chr*32+line];
Bit8u fg=col&0xf;
Bit8u bg=(Bit8u)(TXT_BG_Table[col>>4]&0xff);
if (FontMask[col>>7]==0) font=0;
*draw++=(font&0x80)?fg:bg; *draw++=(font&0x40)?fg:bg;
*draw++=(font&0x20)?fg:bg; *draw++=(font&0x10)?fg:bg;
*draw++=(font&0x08)?fg:bg; *draw++=(font&0x04)?fg:bg;
*draw++=(font&0x02)?fg:bg;
Bit8u last=(font&0x01)?fg:bg;
*draw++=last;
*draw++=((chr<0xc0) || (chr>0xdf)) ? bg : last;
}
if (!vga.draw.cursor.enabled || !(vga.draw.cursor.count&0x8)) goto skip_cursor;
font_addr = (vga.draw.cursor.address-vidstart) >> 1;
if (font_addr>=0 && font_addr<(Bits)vga.draw.blocks) {
if (line<vga.draw.cursor.sline) goto skip_cursor;
if (line>vga.draw.cursor.eline) goto skip_cursor;
draw=&TempLine[font_addr*9];
Bit8u fg=vga.tandy.draw_base[vga.draw.cursor.address+1]&0xf;
*draw++=fg; *draw++=fg; *draw++=fg; *draw++=fg;
*draw++=fg; *draw++=fg; *draw++=fg; *draw++=fg;
}
skip_cursor:
return TempLine;
}
static void VGA_VerticalDisplayEnd(Bitu val) {
// vga.config.retrace=true;
vga.config.real_start=vga.config.display_start & ((2*1024*1024)-1);
@ -931,8 +965,13 @@ void VGA_SetupDrawing(Bitu val) {
aspect_ratio=1.0;
vga.draw.blocks=width;
doublewidth=(vga.seq.clocking_mode & 0x8) > 0;
width<<=3; /* 8 bit wide text font */
VGA_DrawLine=VGA_TEXT_Draw_Line;
if ((IS_VGA_ARCH) && (svgaCard==SVGA_None)) {
width*=9; /* 9 bit wide text font */
VGA_DrawLine=VGA_TEXT_Draw_Line_9;
} else {
width<<=3; /* 8 bit wide text font */
VGA_DrawLine=VGA_TEXT_Draw_Line;
}
break;
case M_HERC_GFX:
aspect_ratio=1.5;