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Fixed a DMA list processing quirk, this fixes most black squares in background drawing

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This commit is contained in:
Angelo Salese 2009-12-07 16:57:13 +00:00
parent 3d7b47d280
commit b20c8a4100
1 changed files with 31 additions and 9 deletions
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40
src/mame/drivers/coolridr.c
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@ -234,7 +234,7 @@ static VIDEO_UPDATE(coolridr)
UINT32 count;
int y,x;
static int color;
static UINT32 test_offs = 0x8000;
static UINT32 test_offs = 0x2000;
if(input_code_pressed(screen->machine,KEYCODE_Z))
@ -261,6 +261,9 @@ static VIDEO_UPDATE(coolridr)
if(input_code_pressed_once(screen->machine,KEYCODE_S))
color--;
if(test_offs > 0x100000*4)
test_offs = 0;
count = test_offs/4;
popmessage("%08x %04x",test_offs,color);
@ -272,7 +275,6 @@ static VIDEO_UPDATE(coolridr)
int tile;
tile = (h1_vram[count] & 0x0fff0000) >> 16;
//int colour = tile>>12;
drawgfx_opaque(bitmap,cliprect,gfx,tile,color,0,0,(x+0)*16,y*16);
tile = (h1_vram[count] & 0x00000fff) >> 0;
@ -387,23 +389,43 @@ static void sysh1_dma_transfer( const address_space *space, UINT16 dma_index )
do{
src = (framebuffer_vram[(0+dma_index)/4] & 0x0fffffff);
dst = (framebuffer_vram[(4+dma_index)/4] & 0xfffff);
size = framebuffer_vram[(8+dma_index)/4]*2;
dst = (framebuffer_vram[(4+dma_index)/4]);
size = framebuffer_vram[(8+dma_index)/4];
type = (framebuffer_vram[(0+dma_index)/4] & 0xf0000000) >> 28;
if(type & 8)
printf("%08x %08x %08x %08x\n",src,dst,size,type);
if(type == 0xc || type == 0xd || type == 0xe)
printf("* %08x %08x %08x %08x\n",src,dst,size,type);
else if(type != 0 && type != 0x4)
printf("%08x %08x %08x %08x\n",src,dst,size,type);
if(type == 0x3 || type == 0x4)
{
//type 3 sets a DMA param, type 4 sets some kind of table? Skip it for now
dma_index+=4;
continue;
}
if(type == 0xc)
dst |= 0x3000000; //to videoram, FIXME: unknown offset
{
dst &= 0xfffff;
dst |= 0x3000000; //to videoram, FIXME: unknown offset
size*=2;
}
if(type == 0xd)
{
dst &= 0xfffff;
dst |= 0x3d00000; //to charram, FIXME: unknown offset
size*=2;
}
if(type == 0xe)
{
dst &= 0xfffff;
dst |= 0x3c00000; //to paletteram FIXME: unknown offset
//printf("%08x %08x %08x %08x\n",src,dst,size,type);
//size/=2;
if((src & 0xff00000) == 0x3e00000)
return; //FIXME: kludge to avoid palette corruption
//debugger_break(space->machine);
@ -423,7 +445,7 @@ static void sysh1_dma_transfer( const address_space *space, UINT16 dma_index )
//printf("%08x %08x %08x %08x\n",src,dst,size,type);
}
if(type == 0x0)
if(type == 0x00)
end_dma_mark = 1; //end of DMA list
dma_index+=0xc;