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Port from MESS, nw

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This commit is contained in:
Angelo Salese 2012-01-23 22:12:23 +00:00
parent 20b95d1868
commit 4e9be9c5c3
1 changed files with 135 additions and 12 deletions
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147
src/emu/video/pc_vga.c
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@ -22,7 +22,8 @@
- add emulated mc6845 hook-up
- fix video update.
- rewrite video drawing functions (they are horrible)
- add emulated CGA
- fix RAM read/writes, CGA and Mono has video bugs due of corrupted vga.memory
- fix emulated CGA and Mono modes
- add VESA etc.
- (and many more ...)
@ -255,7 +256,11 @@ static void vga_vh_text(running_machine &machine, bitmap_rgb32 &bitmap, const re
pen = vga.pens[attr & 0x0f];
else
pen = vga.pens[attr >> 4];
if(!machine.primary_screen->visible_area().contains(column*width+w, line+h))
continue;
bitmapline[column*width+w] = pen;
}
if (w<width)
{
@ -264,6 +269,9 @@ static void vga_vh_text(running_machine &machine, bitmap_rgb32 &bitmap, const re
pen = vga.pens[attr & 0x0f];
else
pen = vga.pens[attr >> 4];
if(!machine.primary_screen->visible_area().contains(column*width+w, line+h))
continue;
bitmapline[column*width+w] = pen;
}
}
@ -274,6 +282,8 @@ static void vga_vh_text(running_machine &machine, bitmap_rgb32 &bitmap, const re
(h<=CRTC_CURSOR_BOTTOM)&&(h<height)&&(line+h<TEXT_LINES);
h++)
{
if(!machine.primary_screen->visible_area().contains(column*width, line+h))
continue;
bitmap.plot_box(column*width, line+h, width, 1, vga.pens[attr&0xf]);
}
}
@ -293,9 +303,6 @@ static void vga_vh_ega(running_machine &machine, bitmap_rgb32 &bitmap, const re
{
for(yi=0;yi<height;yi++)
{
if(!machine.primary_screen->visible_area().contains(0, line + yi))
return;
bitmapline = &bitmap.pix32(line + yi);
for (pos=addr, c=0, column=0; column<EGA_COLUMNS; column++, c+=8, pos=(pos+4)&0x3ffff)
@ -310,6 +317,8 @@ static void vga_vh_ega(running_machine &machine, bitmap_rgb32 &bitmap, const re
for (i = 7; i >= 0; i--)
{
pen = vga.pens[(data[0]&1) | (data[1]&2) | (data[2]&4) | (data[3]&8)];
if(!machine.primary_screen->visible_area().contains(c+i, line + yi))
continue;
bitmapline[c+i] = pen;
data[0]>>=1;
@ -356,6 +365,8 @@ static void vga_vh_vga(running_machine &machine, bitmap_rgb32 &bitmap, const rec
for(xi=0;xi<0x10;xi++)
{
xi_h = ((xi & 6) >> 1) | ((xi & 8) << 1);
if(!machine.primary_screen->visible_area().contains(c+xi, line + yi))
continue;
bitmapline[c+xi] = machine.pens[vga.memory[pos+xi_h]];
}
}
@ -382,6 +393,8 @@ static void vga_vh_vga(running_machine &machine, bitmap_rgb32 &bitmap, const rec
for(xi=0;xi<0x10;xi++)
{
xi_h = (xi & 0xe) >> 1;
if(!machine.primary_screen->visible_area().contains(c+xi, line + yi))
continue;
bitmapline[c+xi] = machine.pens[vga.memory[pos+xi_h]];
}
}
@ -390,6 +403,106 @@ static void vga_vh_vga(running_machine &machine, bitmap_rgb32 &bitmap, const rec
}
}
static void vga_vh_cga(running_machine &machine, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
UINT32 *bitmapline;
//int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
int x,y,yi;
UINT32 addr;
pen_t pen;
addr = 0;
for(y=0;y<200;y++)
{
//addr = (y) * test;
for(x=0;x<640;x+=16)
{
for(yi=0;yi<1;yi++)
{
bitmapline = &bitmap.pix32(y + yi);
/* TODO: debug dirty assignment */
{
pen = vga.pens[(vga.memory[addr] >> (6)) & 3];
bitmapline[x+0] = pen;
pen = vga.pens[(vga.memory[addr] >> (4)) & 3];
bitmapline[x+1] = pen;
pen = vga.pens[(vga.memory[addr] >> (2)) & 3];
bitmapline[x+2] = pen;
pen = vga.pens[(vga.memory[addr] >> (0)) & 3];
bitmapline[x+3] = pen;
pen = vga.pens[(vga.memory[addr+0x4000] >> (6)) & 3];
bitmapline[x+4] = pen;
pen = vga.pens[(vga.memory[addr+0x4000] >> (4)) & 3];
bitmapline[x+5] = pen;
pen = vga.pens[(vga.memory[addr+0x4000] >> (2)) & 3];
bitmapline[x+6] = pen;
pen = vga.pens[(vga.memory[addr+0x4000] >> (0)) & 3];
bitmapline[x+7] = pen;
pen = vga.pens[(vga.memory[addr+1] >> (6)) & 3];
bitmapline[x+8] = pen;
pen = vga.pens[(vga.memory[addr+1] >> (4)) & 3];
bitmapline[x+9] = pen;
pen = vga.pens[(vga.memory[addr+1] >> (2)) & 3];
bitmapline[x+10] = pen;
pen = vga.pens[(vga.memory[addr+1] >> (0)) & 3];
bitmapline[x+11] = pen;
pen = vga.pens[(vga.memory[addr+1+0x4000] >> (6)) & 3];
bitmapline[x+12] = pen;
pen = vga.pens[(vga.memory[addr+1+0x4000] >> (4)) & 3];
bitmapline[x+13] = pen;
pen = vga.pens[(vga.memory[addr+1+0x4000] >> (2)) & 3];
bitmapline[x+14] = pen;
pen = vga.pens[(vga.memory[addr+1+0x4000] >> (0)) & 3];
bitmapline[x+15] = pen;
}
}
//popmessage("%02x %02x %02x %02x %02x %02x %02x %02x",vga.memory[0],vga.memory[1],vga.memory[2],vga.memory[3],vga.memory[4],vga.memory[5],vga.memory[6],vga.memory[7]);
addr+=2;
}
}
}
static void vga_vh_mono(running_machine &machine, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
UINT32 *bitmapline;
//int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
int x,xi,y,yi;
UINT32 addr;
pen_t pen;
addr = 0;
for(y=0;y<200;y++)
{
//addr = (y) * test;
for(x=0;x<640;x+=8)
{
for(yi=0;yi<1;yi++)
{
bitmapline = &bitmap.pix32(y + yi);
for(xi=0;xi<8;xi++)
{
pen = vga.pens[(vga.memory[addr] >> (xi)) & 1];
bitmapline[x+xi] = pen;
}
}
//popmessage("%02x %02x %02x %02x %02x %02x %02x %02x",vga.memory[0],vga.memory[1],vga.memory[2],vga.memory[3],vga.memory[4],vga.memory[5],vga.memory[6],vga.memory[7]);
addr++;
}
}
}
static UINT8 pc_vga_choosevideomode(running_machine &machine)
{
int i;
@ -426,7 +539,7 @@ static UINT8 pc_vga_choosevideomode(running_machine &machine)
if (vga.svga_intf.choosevideomode)
{
return 4;
return 6;
}
else if (!GRAPHIC_MODE)
{
@ -445,12 +558,20 @@ static UINT8 pc_vga_choosevideomode(running_machine &machine)
//*width = VGA_COLUMNS * 8;
return 2;
}
else if (vga.gc.data[5]&0x20)
{
return 3;
}
else if ((vga.gc.data[6]&0x0c) == 0x0c)
{
return 4;
}
else
{
//proc = vga_vh_ega;
//*height = LINES;
//*width = EGA_COLUMNS * 8;
return 3;
return 5;
}
}
@ -471,8 +592,10 @@ SCREEN_UPDATE_RGB32( pc_video )
case 0: bitmap.fill(get_black_pen(screen.machine()), cliprect);break;
case 1: vga_vh_text(screen.machine(), bitmap, cliprect); break;
case 2: vga_vh_vga (screen.machine(), bitmap, cliprect); break;
case 3: vga_vh_ega (screen.machine(), bitmap, cliprect); break;
case 4: vga.svga_intf.choosevideomode(screen.machine(), bitmap, cliprect, vga.sequencer.data, vga.crtc.data, vga.gc.data, &w, &h); break;
case 3: vga_vh_cga (screen.machine(), bitmap, cliprect); break;
case 4: vga_vh_mono(screen.machine(), bitmap, cliprect); break;
case 5: vga_vh_ega (screen.machine(), bitmap, cliprect); break;
case 6: vga.svga_intf.choosevideomode(screen.machine(), bitmap, cliprect, vga.sequencer.data, vga.crtc.data, vga.gc.data, &w, &h); break;
}
return 0;
@ -726,6 +849,10 @@ static void recompute_params(running_machine &machine)
hclock_m = (!GRAPHIC_MODE) ? CHAR_WIDTH : 8;
/* safety check */
if(!vga.crtc.horz_disp_end || !vga.crtc.vert_disp_end || !vga.crtc.horz_total || !vga.crtc.vert_total)
return;
rectangle visarea(0, ((vga.crtc.horz_disp_end + 1) * hclock_m)-1, 0, vga.crtc.vert_disp_end);
vblank_period = (vga.crtc.vert_total + 2);
@ -1247,10 +1374,6 @@ void pc_vga_reset(running_machine &machine)
/* TODO: real defaults */
vga.crtc.line_compare = 0x3ff;
vga.crtc.horz_total = 0xff;
vga.crtc.vert_total = 0xff;
vga.crtc.horz_disp_end = 0xff;
vga.crtc.vert_disp_end = 0x3ff;
}
void pc_vga_init(running_machine &machine, const struct pc_vga_interface *vga_intf, const struct pc_svga_interface *svga_intf)