From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 10 Aug 1995 10:01:44 -0400 From: jmk@plan9.att.com jmk@plan9.att.com Subject: more VGA stuff Topicbox-Message-UUID: 15711e44-eac8-11e9-9e20-41e7f4b1d025 Message-ID: <19950810140144.Z6XLIWwPLIhZOjMXPPq_INYANmIO3o469-RoxIvyHro@z> in order to do resolutions >1024x768 the S3 chip must be put into enhanced mode, which implies 8-bit deep. there are ways to make the hardware do colour-expansion or whatever to make 1-bit work but it doesn't fit the plan9 kernel graphics structure. brazil only deals with 1 and 8 -bit. the hardware cursor on the S3 chips only works in enhanced mode. if you have a bt485 or tvp302x ramdac that may work in the non-enhanced mode but aux/vga is currently set up not to allow the hwgc except in enhanced mode. ------ original message follows ------ >>From cse.psu.edu!9fans-outgoing-owner Thu Aug 10 04:06:12 EDT 1995 Received: by psuvax1.cse.psu.edu id <34121>; Thu, 10 Aug 1995 03:29:34 -0400 Received: from staff.cs.su.OZ.AU ([129.78.8.1]) by psuvax1.cse.psu.edu with SMTP id <34119>; Thu, 10 Aug 1995 03:28:51 -0400 Received: from sour.sw.oz.au by staff.cs.su.OZ.AU (mail from jeremy for 9fans@cse.psu.edu) with MHSnet (insertion MHSnet site: swallow.sw.oz.au); Thu, 10 Aug 1995 17:28:25 +1000 Received: from sour.sw.oz.au by swallow.sw.oz.au with SMTP id AA20859; Thu, 10 Aug 95 17:23:38 EST (4.1/Unixware) (from jeremy@sour.sw.oz.au for 9fans@cse.psu.edu) Received: by sour.sw.oz.au id AA06760; Thu, 10 Aug 1995 17:23:36 +1000 (5.65c/1.34) (from jeremy@sour.sw.oz.au for 9fans@cse.psu.edu) From: jeremy@sour.sw.oz.au (Jeremy Fitzhardinge) Message-Id: <199508100723.AA06760@sour.sw.oz.au> Subject: Re: more VGA stuff To: 9fans@cse.psu.edu Date: Thu, 10 Aug 1995 03:23:34 -0400 In-Reply-To: <95Aug9.170332edt.45508@colossus.cse.psu.edu> from "jmk@plan9.att.com" at Aug 9, 95 04:46:09 pm Organization: Softway Pty Ltd X-Face: '6U=%Tv\k1l-:?\$C[D@G 7(vl~w8&y}!f\bh#wL#n,TGKh>T.c7eT5-y)Hl'i;A1z$9?*lD.k}yqshddFb l[EC}c=;uc%x'}uh3E91p&oE > There is a new version of aux/vga available for pickup by ftp, look in the > pcdist/vga subdirectory (yesterday's vga.386 and vgadb have been removed). > A description is in the file 'CHANGES'. I tried out the Aug 8th version of aux/vga, and it worked much better. The fickering pixels went away, and I got a good clear 1184x888x8 image with a 100MHz dot clock. However, when I used a 1 (or 4) bit deep mode, it seemed as though only every second pixel was being displayed. Is this something else which needs to be addressed when pixel multiplexing is turned on in the ramdac? I also noticed that a hardware cursor is not supported except in 8 bit deep screens; is this a limitation of the #9 GXE64 card, or in aux/vga (or the kernel driver)? I'll try the new version out soon, but I didn't see anything in the changes file which might relate to the 1 bit screen problem, so I thought I'd mention it. Thanks, J