SVGA register programming

Thread View: comp.sys.ibm.pc.programmer

2 messages

[T] Back to Threads [V] Tree View [G] Group Articles

2 total messages Started by Tom Friedel Sun, 04 Mar 1990 21:11

#1446

Author: Tom Friedel
Date: Sun, 04 Mar 1990 21:11

15 lines
996 bytes

I am still looking for any information on setting SVGA modes,
mainly 256 color, with out using the BIOS.  This is by definition
chip-set specific, and is often video card specifuc.  I was also
wondering how OS/2 handles this (do they load the video BIOS?)
I've had better luck with the chip-set technical manuals than 
unassembling the BIOS, but there has to be a better way.
Commercial references welcome.

tom jdyx!tpf
 
-- 
Tom Friedel  JDyx Enterprises (404) 320-7624 tpf@jdyx.UUCP 
Unix BBS:  (404) 325-1719 <= 2400 ; (404) 321-5020 >= 2400
"Live simply, so that others may simply live."

Re: SVGA register programming

#1448

Author: Russ Nelson
Date: Mon, 05 Mar 1990 02:47

18 lines
1425 bytes

In article <1990Mar4.211117.15287@jdyx.UUCP> tpf@jdyx.UUCP (Tom Friedel) writes:

   I am still looking for any information on setting SVGA modes,
   mainly 256 color, with out using the BIOS.  This is by definition
   chip-set specific, and is often video card specific.
   I've had better luck with the chip-set technical manuals than 
   unassembling the BIOS, but there has to be a better way.

An answer:
    Have you ever seen John Bridges' VGAKIT?  It contains code to detect and
    bank switch many (all?) of the VGA chip sets.
A question:
    Where did you get chip-set technical manuals?  If you got them from the
    manufacturers, could you post the names and addresses?

--
--russ (nelson@clutx [.bitnet | .clarkson.edu])  Russ.Nelson@$315.268.6667
Violence never solves problems, it just changes them into more subtle problems

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads