Path: utzoo!attcan!uunet!dino!ux1.cso.uiuc.edu!herodotus.cs.uiuc.edu!kadie
From: kadie@herodotus.cs.uiuc.edu (Carl M. Kadie)
Newsgroups: comp.sys.ibm.pc
Subject: Re: QEMM 5.0 and 1024x768 VGA problem
Message-ID: <648274288@herodotus.cs.uiuc.edu>
Date: 18 Jul 90 04:11:28 GMT
References: <17079013:36:14KRW1@lehigh.bitnet>
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 42

With the suggestions I received, I was able to get it working.

The problem was interference between QEMM and video memory.
To make matters worse, the interference caused the machine to freeze up.

The solution was to load Qemm like this:

DEVICE=C:\QEMM\QEMM.SYS on x=a000-ffff

Then I exercised all the video modes of the card. I switched
to 132x60 text mode, Hercules mode, and the high-res color
modes (using the 'chkmode' program and 'fractint'). Then
I ran desqview and other programs. [See "Analysis Procedures"
in the Qemm manual for information on this.]

Then I typed
qemm analysis 

Receiving a report like:

    Area      Size      Status
0000 - C7FF   800K   OK
C800 - EFFF   160K   Include
F000 - F0FF     4K   OK
F100 - F7FF    28K   Include
F800 - FAFF    12K   OK
FB00 - FBFF     4K   Include
FC00 - FCFF     4K   OK
FD00 - FDFF     4K   Include
FE00 - FFFF     8K   OK

Finally, I modified the qemm load line:


DEVICE=C:\QEMM\QEMM.SYS ram rom x=a000-ffff i=c800-efff i=f100-f7ff i=fb00-fbff i=fd00-fdff 


Thanks to everyone who helped,
--
Carl Kadie  --- kadie@cs.uiuc.edu
University of Illinois at Urbana-Champaign
 === Today the NEA and alt.sex, tomorrow our public libraries ===