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Correct S3 class code.

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Limit S3 attribute registers to those actually present.
Don't update current position registers at the end of BitBlt command.
Fixes S3 on SUSE 6.3.
This commit is contained in:
TomW 2015-10-11 20:36:18 +01:00
commit d574a4f5eb
1 changed files with 8 additions and 3 deletions
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11
src/vid_s3.c
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@ -257,6 +257,11 @@ uint8_t s3_in(uint16_t addr, void *p)
// if (addr != 0x3da) pclog("S3 in %04X %08x:%02x\n", addr, CS, pc);
switch (addr)
{
case 0x3c1:
if (svga->attraddr > 0x14)
return 0xff;
break;
case 0x3c5:
if (svga->seqaddr >= 0x10 && svga->seqaddr < 0x20)
return svga->seqregs[svga->seqaddr];
@ -1587,8 +1592,8 @@ void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat
if (cpu_input/* && (s3->accel.multifunc[0xa] & 0xc0) == 0x80*/) return;
if (s3->accel.sy < 0)
{
s3->accel.cur_x = s3->accel.cx;
s3->accel.cur_y = s3->accel.cy;
// s3->accel.cur_x = s3->accel.cx;
// s3->accel.cur_y = s3->accel.cy;
return;
}
}
@ -1837,7 +1842,7 @@ uint8_t s3_pci_read(int func, int addr, void *p)
case 0x08: return 0; /*Revision ID*/
case 0x09: return 0; /*Programming interface*/
case 0x0a: return 0x01; /*Supports VGA interface*/
case 0x0a: return 0x00; /*Supports VGA interface*/
case 0x0b: return 0x03;
case 0x10: return 0x00; /*Linear frame buffer address*/