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document where RGB framebuffer controls appear to be

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This commit is contained in:
David Haywood 2013-02-22 22:52:01 +00:00
parent 8216e009b4
commit 6ed1482ce2
1 changed files with 107 additions and 59 deletions
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166
src/mame/drivers/coolridr.c
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@ -1277,6 +1277,9 @@ WRITE32_MEMBER(coolridr_state::sysh1_blit_mode_w)
printf("blitter mode with mask 0x0000f000\n");
//if (m_blitterMode<0x80) printf("blitter set screen %d mode %02x addr? %04x\n", (data&0x00800000)>>23, ((data & 0x00ff0000)>>16)-0x30, data & 0x00000fff);
// form 0xacMM-xxx ac = fixed value for this mode? MM = modes above. -xxx = some kind of offset? but it doesn't increment for each blit like the textOffset / paletteOffset stuff, investigate
}
@ -1428,6 +1431,8 @@ WRITE32_MEMBER(coolridr_state::sysh1_fb_data_w)
copybitmap(m_screen2_bitmap, m_temp_bitmap_sprites2[i], 0, 0, 0, 0, visarea);
m_temp_bitmap_sprites2[i].fill(0, visarea);
}
//printf("frame\n");
}
}
else
@ -1505,71 +1510,114 @@ void coolridr_state::sysh1_dma_transfer( address_space &space, UINT16 dma_index
size = m_framebuffer_vram[(8+dma_index)/4];
type = (m_framebuffer_vram[(0+dma_index)/4] & 0xf0000000) >> 28;
#if 0
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);
#endif
if(type == 0x3 || type == 0x4)
switch (type)
{
//type 3 sets a DMA state->m_param, type 4 sets some kind of table? Skip it for now
dma_index+=4;
continue;
case 0x0:
end_dma_mark = 1; //end of DMA list
break;
default:
// on startup
//unhandled dma type 01 03e09b80
//unhandled dma type 02 03e0dc00
//unhandled dma type 02 07e0ee00
printf("unhandled dma type %02x %08x\n", type, src);
dma_index+=4;
break;
case 0x3:
//type 3 sets a DMA state->m_param, type 4 sets some kind of table? Skip it for now
/* per screen - on transitions */
if (src & 0x04000000)
{
//printf("screen 2 unhandled dma type %02x %08x\n", type, src& ~0x04000000);
}
else
{
//printf("screen 1 unhandled dma type %02x %08x\n", type, src& ~0x04000000);
}
dma_index+=4;
break;
case 0x4:
/* per screen - on transitions */
/* some kind of brightness effect for the sprites? */
if (src & 0x04000000)
{
// screen 2...
//printf("screen 2 unhandled dma type %02x %08x\n", type, src& ~0x04000000);
}
else
{
// screen 1
//printf("screen 1 unhandled dma type %02x %08x\n", type, src& ~0x04000000);
}
//type 3 sets a DMA state->m_param, type 4 sets some kind of table? Skip it for now
dma_index+=4;
break;
case 0xc:
dst &= 0xfffff;
dst |= 0x3000000; //to videoram, FIXME: unknown offset
size*=2;
for(s_i=0;s_i<size;s_i+=4)
{
space.write_dword(dst,space.read_dword(src));
dst+=4;
src+=4;
}
dma_index+=0xc;
break;
case 0xd:
dst &= 0xfffff;
dst |= 0x3d00000; //to charram, FIXME: unknown offset
size*=2;
for(s_i=0;s_i<size;s_i+=4)
{
space.write_dword(dst,space.read_dword(src));
dst+=4;
src+=4;
}
dma_index+=0xc;
break;
case 0xe:
dst &= 0xfffff;
dst |= 0x3c00000; //to paletteram FIXME: unknown offset
//size/=2;
// this is used when transfering palettes written by the blitter? maybe?
// it might be a better indication of where blitter command 0xe0 should REALLY write data (at 0x3e00000)...
if((src & 0xff00000) == 0x3e00000)
{
src &= 0xfffff;
src |= 0x3c00000;
}
for(s_i=0;s_i<size;s_i+=4)
{
space.write_dword(dst,space.read_dword(src));
dst+=4;
src+=4;
}
dma_index+=0xc;
break;
}
if(type == 0xc)
{
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
//size/=2;
// this is used when transfering palettes written by the blitter? maybe?
// it might be a better indication of where blitter command 0xe0 should REALLY write data (at 0x3e00000)...
if((src & 0xff00000) == 0x3e00000)
{
src &= 0xfffff;
src |= 0x3c00000;
}
// return; //FIXME: kludge to avoid palette corruption
//debugger_break(space.machine());
}
if(type == 0xc || type == 0xd || type == 0xe)
{
for(s_i=0;s_i<size;s_i+=4)
{
space.write_dword(dst,space.read_dword(src));
dst+=4;
src+=4;
}
}
else
{
//printf("%08x %08x %08x %08x\n",src,dst,size,type);
}
if(type == 0x00)
end_dma_mark = 1; //end of DMA list
dma_index+=0xc;
}while(!end_dma_mark );
}