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From: sysnett@cc.newcastle.edu.au
Newsgroups: comp.windows.ms
Subject: Tseng 4000 Win3 enhanced mode driver bug?
Message-ID: <1991Apr15.144613.9981@cc.newcastle.edu.au>
Date: 15 Apr 91 04:46:11 GMT
Organization: University of Newcastle, AUSTRALIA
Lines: 71

Recently, there have been a couple of messages posted here concerning problems
with a Tseng 4000 chipset SVGA card operating in 256 colour mode in 386
enhanced mode.

The first from Terry (terryr@uno.cs.mu.OZ.AU) in article
<1991Apr11.151004.1815@ucsvc.ucs.unimelb.edu.au> where he says

> The first is for a friend who has a 25 MHz 386 DX, (Windows 3.0)
> AMI Bios dated 3 March 89, IDE controller, TSENG VGA Card, 2 Meg of RAM,
> Quantum Hard drive 82 Meg, running Dos 3.3 with no TSR's.
> His machine reports UNRECOVERABLE APPLICATION ERROR when ever he tries to
> print a Word for Windows doc over seven pages.  Other errors include DISK
> ERROR, NO ROOM ON FIXED DRIVE, (there is 12 meg free).  Any suggestions.

I replied -

>I have a similar configuration (except with 4Mb of memory, Connor 100Mb IDE)
>and have seen the same problem until I switched video drivers back to 16 colour
>mode.
>
>You didn't say what type of Tseng chipset you have.  I have a Tseng MegaEVA
>1024 (with 1 Mb display memory and Tseng 4000 chipset).  This has a larger
>than normal video ROM so I also have the following line in my SYSTEM.INI file
>(in the [386enh] section) -
>
>	emmexclude=c400-c7ff
>
>The preliminary version of the Tseng 4000 drivers (dated 18th, 21st and 29th
>May, 1990 from the TSENG4K.ZIP file on cica) were causing me problems in 256
>colour mode using Paintbrush (incorrect loading of BMP files, new clean drawing
>surface corrupted with random pixels) as well as UAEs in Word for Windows.
>
>The Orchid ProDesigner II Windows 3 Drivers (dated 1st Sep 1990) from the
>ORCHID-PD2.ZIP file on cica - also exhibit the same problems in 256 colour
>mode. (This board uses the Tseng 4000 chipset as well).

Another from Andrew Williams (andreww@uniwa.uwa.oz.au) in article
<1991Apr13.125238.17769@uniwa.uwa.oz> says -

>	My system is a 386/25, with AMI bios, C&T chipset, Tseng ET4000
>card (from Tseng), Tsengs 1024x768x256 windows driver, 4Mb of ram, using
>himem.sys. I can display all of the images ok, even full screen, using
>Windows image viewers, but I can't install them as desktops!

Stephen Smith (smsmith@hupxa.ircc.ohio-state.edu) in article
<1991Apr13.232322.7922@magnus.acs.ohio-state.edu> replies -

>Funny that you ask this question now--another person on the net
>asked this same question a couple days ago.  Since he had the
>same monitor and card as I do (Orchid Pro II, Sony 1304), I was
>also curious if it failed on my machine.  So I converted a
>large .gif file to .bmp and tried to display it in enhanced
>mode.  It didn't work; in fact, EXACTLY the same thing happened
>to me as happened to you.  BUT, you can display large .bmp files
>in standard mode.  You just can't do it in enhanced mode.
>
>I tried a 787k .bmp file (1024x768x256) as wallpaper in standard
>mode and had NO problem.  But I also get an "unrecoverable application
>error...terminating current application" if I try the same thing
>in enhanced mode.  I also tried to do it with a 590k .bmp file
>(768x768x256) with the same results.

Does anyone else with a Tseng 4000 chipset SVGA card have similar problems?

I would particularly like to know if there are any "non-preliminary release" or
other Windows 3 SVGA drivers for the Tseng 4000 that work in 386 enhanced mode
using 256 colours.

-- 
Tony Nicholson, Network Group,          | E-mail: sysnett@cc.newcastle.EDU.AU
Computing Services, McMullin Building, Uni of Newcastle, NSW, 2308, AUSTRALIA