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Add v0.7 source

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TomW 2013-04-21 14:54:35 +01:00
commit 3c253c2cf8
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64
src/vid_tkd8001_ramdac.c Normal file
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@ -0,0 +1,64 @@
/*Trident TKD8001 RAMDAC emulation*/
#include "ibm.h"
#include "video.h"
#include "vid_svga.h"
#include "vid_tkd8001_ramdac.h"
static int tkd8001_state=0;
static uint8_t tkd8001_ctrl;
void tkd8001_ramdac_out(uint16_t addr, uint8_t val)
{
// pclog("OUT RAMDAC %04X %02X %04X:%04X\n",addr,val,CS,pc);
switch (addr)
{
case 0x3C6:
if (tkd8001_state == 4)
{
tkd8001_state = 0;
tkd8001_ctrl = val;
switch (val>>5)
{
case 0: case 1: case 2: case 3:
bpp = 8;
break;
case 5:
bpp = 15;
break;
case 6:
bpp = 24;
break;
case 7:
bpp = 16;
break;
}
return;
}
// tkd8001_state = 0;
break;
case 0x3C7: case 0x3C8: case 0x3C9:
tkd8001_state = 0;
break;
}
svga_out(addr,val);
}
uint8_t tkd8001_ramdac_in(uint16_t addr)
{
// pclog("IN RAMDAC %04X %04X:%04X\n",addr,CS,pc);
switch (addr)
{
case 0x3C6:
if (tkd8001_state == 4)
{
//tkd8001_state = 0;
return tkd8001_ctrl;
}
tkd8001_state++;
break;
case 0x3C7: case 0x3C8: case 0x3C9:
tkd8001_state = 0;
break;
}
return svga_in(addr);
}