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From: eyal AT ise DOT canberra DOT edu DOT au (Eyal Lebedinsky)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Graphics in V2
Date: 19 Dec 1995 20:28:39 GMT
Organization: Eyal at home
Lines: 22
Sender: eyal AT e5 DOT pcug DOT org DOT au (Eyal Lebedinsky)
Message-ID: <4b779n$3rk@supreme.pcug.org.au>
References: <DJ4M4F DOT Fq3 AT jade DOT mv DOT net>
NNTP-Posting-Host: ts97.pcug.org.au
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

In article <DJ4M4F DOT Fq3 AT jade DOT mv DOT net>, wroberts AT aug DOT com writes:
|> >What address is the VGA buffer mapped to in V2 ?
|> >
|> >I've tried writing to 0xD0000000, 0xD1000000, and 0xA0000000 - all 
|> >the r/w video address mentioned in the docs.
|> >
|> Here's a snippet of code that uses the _farpokeb() function to plot a pixel:
[snippet deleted]

The example given gains access to the real-mode VGA frame memory. This is not what
the original poster was asking (and not what I, too, am looking for).

Go32 had a feature where the full video memory was mapped into a known virtual
address (it was 0xd0000000). You simply wrote to it, and if you hit a bank which
was not mapped then go32 (using the current video driver) will take care of it.

With v2 this virtual address gives a memory protection fault.

Anyone knows how to set up the same feature with v2?

--
Eyal Lebedinsky		(eyal AT ise DOT canberra DOT edu DOT au, eyal AT pcug DOT org DOT au)