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Added dummy BT485 emulation for logging purposes, proper BT485 implementation to come.

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This commit is contained in:
OBattler
2016-07-23 15:34:06 +02:00
parent 455baf46f2
commit 7612b42d95
3 changed files with 206 additions and 7 deletions
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31
src/vid_s3.c
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@@ -11,11 +11,13 @@
#include "vid_s3.h"
#include "vid_svga.h"
#include "vid_svga_render.h"
#include "vid_bt485_ramdac.h"
#include "vid_sdac_ramdac.h"
enum
{
S3_VISION864,
S3_VISION964,
S3_TRIO32,
S3_TRIO64
};
@@ -66,6 +68,7 @@ typedef struct s3_t
svga_t svga;
sdac_ramdac_t ramdac;
bt485_ramdac_t bt485_ramdac;
uint8_t bank;
uint8_t ma_ext;
@@ -849,7 +852,21 @@ void s3_out(uint16_t addr, uint8_t val, void *p)
}
}
break;
//case 0x55: case 0x43:
case 0x55: case 0x43:
if (s3->chip == S3_VISION964)
{
if (svga->crtc[0x55] & 3)
{
bt485_set_rs2(svga->crtc[0x55] & 1, &s3->bt485_ramdac);
bt485_set_rs3(svga->crtc[0x55] & 2, &s3->bt485_ramdac);
}
else
{
bt485_set_rs2(svga->crtc[0x43] & 2, &s3->bt485_ramdac);
}
pclog("RS2 is now %i, RS3 is now %i\n", s3->bt485_ramdac.rs2, s3->bt485_ramdac.rs3);
}
break;
// pclog("Write CRTC R%02X %02X\n", crtcreg, val);
}
if (old != val)
@@ -2269,21 +2286,21 @@ int s3_phoenix_trio64_available()
void *s3_miro_vision964_init()
{
s3_t *s3 = s3_init("roms/VISION864P.BIN", S3_VISION864);
s3_t *s3 = s3_init("roms/mirocrystal.VBI", S3_VISION964);
s3->id = 0xc1; /*Vision864P*/
s3->id_ext = s3->id_ext_pci = 0xc1;
s3->id = 0xd1; /*Vision964P*/
s3->id_ext = s3->id_ext_pci = 0xd1;
s3->packed_mmio = 1;
s3->getclock = sdac_getclock;
s3->getclock_p = &s3->ramdac;
s3->getclock = bt485_getclock;
s3->getclock_p = &s3->bt485_ramdac;
return s3;
}
int s3_miro_vision964_available()
{
return rom_present("roms/VISION864P.BIN");
return rom_present("roms/mirocrystal.VBI");
}
void s3_close(void *p)