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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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108
src/vid_vga.c
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@ -1,92 +1,116 @@
/*IBM VGA emulation*/
#include <stdlib.h>
#include "ibm.h"
#include "device.h"
#include "io.h"
#include "video.h"
#include "vid_svga.h"
#include "vid_vga.h"
void vga_out(uint16_t addr, uint8_t val, void *priv)
typedef struct vga_t
{
svga_t svga;
} vga_t;
void vga_out(uint16_t addr, uint8_t val, void *p)
{
vga_t *vga = (vga_t *)p;
svga_t *svga = &vga->svga;
uint8_t old;
pclog("vga_out : %04X %02X %04X:%04X %02X %i\n", addr, val, CS,pc, ram[0x489], ins);
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 0x3D4:
crtcreg = val & 0x1f;
svga->crtcreg = val & 0x1f;
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 vga_in(uint16_t addr, void *priv)
uint8_t vga_in(uint16_t addr, void *p)
{
vga_t *vga = (vga_t *)p;
svga_t *svga = &vga->svga;
uint8_t temp;
if (addr != 0x3da) pclog("vga_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 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;
}
int vga_init()
void *vga_init()
{
svga_recalctimings_ex = NULL;
svga_vram_limit = 1 << 18; /*256kb*/
vrammask = 0x3ffff;
svgawbank = svgarbank = 0;
bpp = 8;
svga_miscout = 1;
return svga_init();
vga_t *vga = malloc(sizeof(vga_t));
memset(vga, 0, sizeof(vga_t));
svga_init(&vga->svga, vga, 1 << 18, /*256kb*/
NULL,
vga_in, vga_out,
NULL);
io_sethandler(0x03c0, 0x0020, vga_in, NULL, NULL, vga_out, NULL, NULL, vga);
vga->svga.bpp = 8;
vga->svga.miscout = 1;
return vga;
}
GFXCARD vid_vga =
void vga_close(void *p)
{
vga_t *vga = (vga_t *)p;
svga_close(&vga->svga);
free(vga);
}
void vga_speed_changed(void *p)
{
vga_t *vga = (vga_t *)p;
svga_recalctimings(&vga->svga);
}
device_t vga_device =
{
"VGA",
vga_init,
/*IO at 3Cx/3Dx*/
vga_out,
vga_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
vga_close,
vga_speed_changed,
svga_add_status_info
};