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Re-organisation of video emulation.

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This commit is contained in:
TomW 2013-06-24 20:42:35 +01:00
commit 58085bcc87
86 changed files with 8087 additions and 7229 deletions
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158
src/vid_ati28800.c
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@ -1,161 +1,183 @@
/*ATI 28800 emulation (VGA Charger)*/
#include <stdlib.h>
#include "ibm.h"
#include "device.h"
#include "io.h"
#include "video.h"
#include "vid_ati28800.h"
#include "vid_ati_eeprom.h"
#include "vid_svga.h"
#include "vid_svga_render.h"
static uint8_t ati_regs[256];
static int ati_index;
void ati28800_out(uint16_t addr, uint8_t val, void *priv)
typedef struct ati28800_t
{
svga_t svga;
ati_eeprom_t eeprom;
uint8_t regs[256];
int index;
} ati28800_t;
void ati28800_out(uint16_t addr, uint8_t val, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_t *svga = &ati28800->svga;
uint8_t old;
pclog("ati28800_out : %04X %02X %04X:%04X\n", addr, val, CS,pc);
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga_miscout&1)) addr ^= 0x60;
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1))
addr ^= 0x60;
switch (addr)
{
case 0x1ce:
ati_index = val;
ati28800->index = val;
break;
case 0x1cf:
ati_regs[ati_index] = val;
switch (ati_index)
ati28800->regs[ati28800->index] = val;
switch (ati28800->index)
{
case 0xb2:
case 0xbe:
if (ati_regs[0xbe] & 8) /*Read/write bank mode*/
if (ati28800->regs[0xbe] & 8) /*Read/write bank mode*/
{
svgarbank = ((ati_regs[0xb2] >> 5) & 7) * 0x10000;
svgawbank = ((ati_regs[0xb2] >> 1) & 7) * 0x10000;
svga->read_bank = ((ati28800->regs[0xb2] >> 5) & 7) * 0x10000;
svga->write_bank = ((ati28800->regs[0xb2] >> 1) & 7) * 0x10000;
}
else /*Single bank mode*/
svgarbank = svgawbank = ((ati_regs[0xb2] >> 1) & 7) * 0x10000;
svga->read_bank = svga->write_bank = ((ati28800->regs[0xb2] >> 1) & 7) * 0x10000;
break;
case 0xb3:
ati_eeprom_write(val & 8, val & 2, val & 1);
ati_eeprom_write(&ati28800->eeprom, val & 8, val & 2, val & 1);
break;
}
break;
case 0x3D4:
crtcreg = val & 0x3f;
svga->crtcreg = val & 0x3f;
return;
case 0x3D5:
if (crtcreg <= 7 && crtc[0x11] & 0x80) return;
old=crtc[crtcreg];
crtc[crtcreg]=val;
if (old!=val)
if (svga->crtcreg <= 7 && svga->crtc[0x11] & 0x80) return;
old = svga->crtc[svga->crtcreg];
svga->crtc[svga->crtcreg] = val;
if (old != val)
{
if (crtcreg<0xE || crtcreg>0x10)
if (svga->crtcreg < 0xe || svga->crtcreg > 0x10)
{
fullchange=changeframecount;
svga_recalctimings();
fullchange = changeframecount;
svga_recalctimings(svga);
}
}
break;
}
svga_out(addr, val, NULL);
svga_out(addr, val, svga);
}
uint8_t ati28800_in(uint16_t addr, void *priv)
uint8_t ati28800_in(uint16_t addr, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_t *svga = &ati28800->svga;
uint8_t temp;
if (addr != 0x3da) pclog("ati28800_in : %04X ", addr);
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga_miscout&1)) addr ^= 0x60;
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1)) addr ^= 0x60;
switch (addr)
{
case 0x1ce:
temp = ati_index;
temp = ati28800->index;
break;
case 0x1cf:
switch (ati_index)
switch (ati28800->index)
{
case 0xb7:
temp = ati_regs[ati_index] & ~8;
if (ati_eeprom_read())
temp = ati28800->regs[ati28800->index] & ~8;
if (ati_eeprom_read(&ati28800->eeprom))
temp |= 8;
break;
default:
temp = ati_regs[ati_index];
temp = ati28800->regs[ati28800->index];
break;
}
break;
case 0x3c2:
if ((vgapal[0].r + vgapal[0].g + vgapal[0].b) >= 0x50)
if ((svga->vgapal[0].r + svga->vgapal[0].g + svga->vgapal[0].b) >= 0x50)
temp = 0;
else
temp = 0x10;
break;
case 0x3D4:
temp = crtcreg;
temp = svga->crtcreg;
break;
case 0x3D5:
temp = crtc[crtcreg];
temp = svga->crtc[svga->crtcreg];
break;
default:
temp = svga_in(addr, NULL);
temp = svga_in(addr, svga);
break;
}
if (addr != 0x3da) pclog("%02X %04X:%04X\n", temp, CS,pc);
return temp;
}
void ati28800_recalctimings()
void ati28800_recalctimings(svga_t *svga)
{
ati28800_t *ati28800 = (ati28800_t *)svga->p;
pclog("ati28800_recalctimings\n");
if (!scrblank && (ati_regs[0xb0] & 0x20)) /*Extended 256 colour modes*/
if (!svga->scrblank && (ati28800->regs[0xb0] & 0x20)) /*Extended 256 colour modes*/
{
pclog("8bpp_highres\n");
svga_render = svga_render_8bpp_highres;
svga_rowoffset <<= 1;
svga_ma <<= 1;
svga->render = svga_render_8bpp_highres;
svga->rowoffset <<= 1;
svga->ma <<= 1;
}
}
int ati28800_init()
void *ati28800_init()
{
svga_recalctimings_ex = ati28800_recalctimings;
svga_vram_limit = 1 << 19; /*512kb*/
vrammask = 0x7ffff;
svgawbank = svgarbank = 0;
bpp = 8;
svga_miscout = 1;
ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
memset(ati28800, 0, sizeof(ati28800_t));
io_sethandler(0x01ce, 0x0002, ati28800_in, NULL, NULL, ati28800_out, NULL, NULL, NULL);
ati_eeprom_load("ati28800.nvr", 0);
return svga_init();
svga_init(&ati28800->svga, ati28800, 1 << 19, /*512kb*/
ati28800_recalctimings,
ati28800_in, ati28800_out,
NULL);
io_sethandler(0x01ce, 0x0002, ati28800_in, NULL, NULL, ati28800_out, NULL, NULL, ati28800);
io_sethandler(0x03c0, 0x0020, ati28800_in, NULL, NULL, ati28800_out, NULL, NULL, ati28800);
ati28800->svga.miscout = 1;
ati_eeprom_load(&ati28800->eeprom, "ati28800.nvr", 0);
return ati28800;
}
GFXCARD vid_ati28800 =
void ati28800_close(void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_close(&ati28800->svga);
free(ati28800);
}
void ati28800_speed_changed(void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_recalctimings(&ati28800->svga);
}
device_t ati28800_device =
{
"ATI-28800",
ati28800_init,
/*IO at 3Cx/3Dx*/
ati28800_out,
ati28800_in,
/*IO at 3Ax/3Bx*/
video_out_null,
video_in_null,
svga_poll,
svga_recalctimings,
svga_write,
video_write_null,
video_write_null,
svga_read,
video_read_null,
video_read_null
ati28800_close,
ati28800_speed_changed,
svga_add_status_info
};