From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 1 Aug 1995 23:24:47 -0400 From: jmk@plan9.att.com jmk@plan9.att.com Subject: aux/vga Topicbox-Message-UUID: 1119df0c-eac8-11e9-9e20-41e7f4b1d025 Message-ID: <19950802032447.JczzxhUvDwRTmBSHoHmh4FhQpOojhzwmBNDob4phGlU@z> the S3 chip (which one is it?) thinks it can do 2x8-bit pixels at a time at the higher resolutions, but it sounds like it's a standard 8-bit dac and it can't do that (the dac you gave looks like a typo), so you see the image twice. the highest clock you can use is 80MHz in this case. still, it shouldn't be allowed to happen, but the insides of aux/vga are a twisty mess. more information please. ------ original message follows ------ >>From cse.psu.edu!9fans-outgoing-owner Tue Aug 1 21:44:20 EDT 1995 Received: by psuvax1.cse.psu.edu id <34120>; Tue, 1 Aug 1995 21:18:14 -0400 Received: from staff.cs.su.OZ.AU ([129.78.8.1]) by psuvax1.cse.psu.edu with SMTP id <34143>; Tue, 1 Aug 1995 20:42:01 -0400 Received: from plan9.cs.su.oz.au by staff.cs.su.OZ.AU (mail from boyd for 9fans@cse.psu.edu) with MHSnet (insertion MHSnet site: staff.cs.su.oz.au); Wed, 02 Aug 1995 09:46:22 +1000 Received: from lore.plan9.cs.su.oz.au. by staff.cs.su.OZ.AU.; Wed, 02 Aug 1995 09:46:20 +1000 From: Boyd Roberts Date: Tue, 1 Aug 1995 19:19:14 -0400 To: 9fans@cse.psu.edu Subject: aux/vga Message-ID: <199508020919.5148.9.babig@plan9.cs.su.oz.au> Sender: owner-9fans@cse.psu.edu Precedence: bulk Reply-To: 9fans@cse.psu.edu I have a problem with aux/vga and my Quadtel S3 video board. The standard /lib/vgadb entry wasn't working so I looked at the board and saw it had a att20c40-80 chip in in so I changed the ramdac entry, and then reordered link=3clock ... so it was before the ramdac entry (don't ask me how I worked this out :-) and changed the clock field to be icd2061a. Then I run aux/vga -l and the weirdest thing happens: I get two half screens, side by side, which are identical; the mouse tracks in both and 8 1/2 runs fine. I think I'm close at this stage, but I'm at a loss to understand what's happening (the only thing I know about PC hardware is that diskette rhymes with whiskette). Any clues? The aux/vga and /lib/vgadb I have come from the pre-release that we have here.