Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!munnari.oz.au!uniwa!andreww
From: andreww@uniwa.uwa.oz (Andrew John Williams)
Newsgroups: comp.windows.ms
Subject: Re: Flicker. . .in 1024x768x256 w/Nec 3D
Message-ID: <1991Feb14.094439.8372@uniwa.uwa.oz>
Date: 14 Feb 91 09:44:39 GMT
References: <91042.221913MXP122@psuvm.psu.edu> <15085@uudell.dell.com> <12162@ur-cc.UUCP> <15093@uudell.dell.com> <1991Feb13.140718.26550@athena.mit.edu> <12183@ur-cc.UUCP>
Organization: University of Western Australia
Lines: 35

nsus_cif@troi.cc.rochester.edu (Nick Susch) writes:

>Ok, let me see if I can explain this again, and see if any one can help
>me. If I run a 1024x768 mode program *when windows isn't running* it
>works fine. When I start windows *in 386 enhanced mode* (at any
>resolution for the actual windows desktop screen) and then run the same
>program that goes into 1024x768 mode from windows (in full screen mode, of
>course) I get an annoying flicker. Its update is *much* slower then 30Hz.
>If is more like 5Hz. Trust me, it is that bad! I also (obviosly) get the
>problem if I run the windows desktop in 1024x768 mode.

>My computer is a 386/25Mhz, with 4Meg ram, and an ET4000 SVGA card. (The
>entire card was made at Tseng.) If anyone knows why this is happening,
>please let me know, thanks.

I also have a 386/25 with a Tseng ET4000 card, (but not enough memory to
run in enhanced mode :-(   ). Firstly, I am pretty sure the Tseng card
interlaces at a 47Hz rate or so, not 30 or 60 Hz. I haven't got the
specs here, unfortunately (I think it was 98Hz field rate). When I
loaded a 1024x768 driver, I got terrible flicker, but this was easily
solved by loading one of the other color default color sets in the
control panel- I guess the default has an nasty cross-hatch pattern.
With the new color set, it is perfectly usable, with only a slight
flicker visible on window border lines.

>"And when I have understanding    |   /\/ick Susch - University of Rochester
> of computers, I will be the      |   nsus_cif@uhura.cc.rochester.edu
>               supreme being!"    |   nsus_cif@uordbv.bitnet
>  - Evil (from "Time Bandits")    |   ... !rochester!ur-cc!nsus_cif

		Andrew Williams
		Physics Department,
		University of Western Australia.
		(andrew@earwax.uwa.oz.au,   OR
		andreww@uniwa.uwa.oz.au )