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Article #17763

Directx 3 "upsets" existing DOS mode games

#17763
From: Greg Keogh
Date: Sat, 12 Apr 1997 00:00
43 lines
2269 bytes
Hello from Melbourne Australia,

It seems that installing Microsoft Directx 3 drivers on Windows 95 "upsets"
how existing games will play in DOS mode. Helpful comments upon this
technical mystery are most welcome. Details follow:

We've previously had no problems at all running many popular games such as
Wing Commander and Silent Hunter under Win95. These games would simply go
into a DOS full-screen window and run perfectly.

A few days ago we installed the flight-sim game 'USNF 97', during the
installation it detected that the Microsoft Directx 3 drivers were not
installed and asked us to confirm their installation, which we did. The
installation ran smoothly, and the 'USNF 97' game then ran beautifully.

Later we discovered that running the previously installed and working games
caused Win95 to issue the prompt:

   Program Requires MS-DOS Mode

We are then prompted to restarted the PC in DOS mode. After much
experimentation we found that existing games would only run in MS-DOS mode
with a new DOS configuration that manually loads all the CD-ROM and mouse
drivers. The games will run, but it's very tedious to set-up this
configuration for all of the existing games and restart the PC each time we
want to play a game.

We are absolutely certain that the change was caused by installing
Microsoft Directx 3 drivers. How has Directx 3 changed the way the
previously working DOS games run? Help and advice most welcome.

Please cc responses to my personal email address so I get them ASAP.

Cheers,
Greg Keogh

-----------------------------------------------------
27 Nancy Street, Cheltenham, Victoria 3192, Australia
Personal: gr...@werple.mira.net.au
Skeptics: con...@skeptics.com.au
URL: http://www.skeptics.com.au - Australian Skeptics
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From: "Greg Keogh" <[REMOVE]gr...@werple.mira.net.au>
Subject: Directx 3 "upsets" existing DOS mode games
Date: 1997/04/12
Message-ID: <01bc46e9$2e278f00$02551dcb@COMPUTER1>
X-Deja-AN: 234222882
Organization: Orthogonal Programming
Newsgroups: alt.games.wing-commander,aus.games,comp.sys.ibm.pc.games.flight-sim
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