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Mail Archives: djgpp/1997/10/21/07:24:26

Message-Id: <3.0.1.32.19971021132330.006c661c@mail.inter.net.il>
Date: Tue, 21 Oct 1997 13:23:30 +0200
To: <djgpp AT delorie DOT com>
From: Christopher Mandel <fibonaci AT parker DOT internet-zahav DOT net>
Subject: Re: problems with VESA
In-Reply-To: <3.0.1.32.19971019185918.006c262c@mail.inter.net.il>
Mime-Version: 1.0

At 06:59 PM 10/19/97 +0200, you wrote:
>I'm trying to implement the VBE functions with DJGPP, but I've run into
>some problems, I'm a bit new to this so I'd appreciate some help.
>When I call the function to get the VBE mode info block, I get "VBE2" in
>the VbeSignature field (I thought that you always get VESA), and 0 in all
>the other fields. Under what circumstances can such a thing happen? I'm
>running in Windows95 in a dos box.
>Also, when I try to call the function to set the VBE graphics mode in RHIDE
>while tracing, the screen goes darker, the mode I am trying to set is 111h,
>a valid mode. When I try to call that function while NOT tracing, it
>crashes and Windows tells me that it executed an invalid instruction. How
>could it execute an invalid instruction? I don't think DJGPP outputs
>invalid instructions and if it did wouldn't I get the same error while
>tracing? I must be missing something.
>
>	Thanks,
>			Christopher.
>
>
>
>
I'm sorry but I made a mistake, I meant VBE info block, not mode info
block. Perhaps posting the source would help?

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