PCem

changeset 159:7dbd14c4adac

find changesets by author, revision, files, or words in the commit message
Restricted available range of attribute and sequencer registers on ViRGE, XFree86 now detects card correctly.
author TomW
date Thu Sep 18 21:14:15 2014 +0100
parents 153d673e767a
children 5bddbc972079
files src/vid_s3_virge.c
diffstat 1 files changed, 10 insertions(+), 2 deletions(-) [+]
line diff
     1.1 --- a/src/vid_s3_virge.c	Wed Sep 17 21:50:57 2014 +0100
     1.2 +++ b/src/vid_s3_virge.c	Thu Sep 18 21:14:15 2014 +0100
     1.3 @@ -383,15 +383,23 @@
     1.4  //        if (addr != 0x3da) pclog("S3 in %04X %04X:%08X  ", addr, CS, pc);
     1.5          switch (addr)
     1.6          {
     1.7 +                case 0x3c1:
     1.8 +                if (svga->attraddr > 0x14)
     1.9 +                        ret = 0xff;
    1.10 +                else
    1.11 +                        ret = svga_in(addr, svga);
    1.12 +                break; 
    1.13                  //case 0x3C6: case 0x3C7: case 0x3C8: case 0x3C9:
    1.14  //                pclog("Read RAMDAC %04X  %04X:%04X\n", addr, CS, pc);
    1.15                  //return sdac_ramdac_in(addr);
    1.16  
    1.17                  case 0x3c5:
    1.18 -                if (svga->seqaddr >= 0x10)
    1.19 +                if (svga->seqaddr >= 8)
    1.20                          ret = svga->seqregs[svga->seqaddr & 0x1f];
    1.21 +                else if (svga->seqaddr <= 4)
    1.22 +                        ret = svga_in(addr, svga);
    1.23                  else
    1.24 -                        ret = svga_in(addr, svga);
    1.25 +                        ret = 0xff;
    1.26                  break;
    1.27  
    1.28                  case 0x3D4: