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Article #42072

vga register access...

#42072
From: Michael Ginsberg
Date: Sat, 10 Feb 1990 00:46
24 lines
1594 bytes
I've got a VRAM VGA board with 512K on it... it can access up to 1024x768
in 16 color, and my monitor has no problem with this...

I can switch it's mode via INT's from under DOS, but...

I'm running Mach, a unix type OS, and can't do the INTs... The people I work
with tell me that I can access the modes by putting stuff in the registers on
the board directly... They know how to do this, they just need the numbers...

So: can anyone give me the numbers for 800x600 [which is a standard vga+ mode
that my card can handle, along with any norman vga+ board] as well as the
extended 1024x768x16 color mode?

Thanks, and please reply via mail since I don't always read this board...

--Michael Ginsberg
Carnegie Mellon University, Pittsburgh, Pennsylvania, USA

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!mg32+
From: mg32+@andrew.cmu.edu (Michael Ginsberg)
Newsgroups: comp.sys.ibm.pc
Subject: vga register access...
Message-ID: <kZoqFCK00WB94DE0o_@andrew.cmu.edu>
Date: 10 Feb 90 00:46:06 GMT
Organization: Class of '92, Carnegie Mellon, Pittsburgh, PA
Lines: 24