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From: c60b-1eq@e260-1g.berkeley.edu (Noam Mendelson)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: High memory mapping (was Re: DOS 5.0)
Keywords: vga high memory
Message-ID: <1991Apr27.014615.20393@agate.berkeley.edu>
Date: 27 Apr 91 01:46:15 GMT
References: <1991Apr25.205919.3812@sj.ate.slb.com> <1991Apr25.235234.27452@agate.berkeley.edu> <18691@sdcc6.ucsd.edu>
Sender: root@agate.berkeley.edu (Charlie Root)
Organization: University of California, Berkeley
Lines: 19

In article <18691@sdcc6.ucsd.edu> hartung@crl.ucsd.edu (Jeff Hartung) writes:
>In article <1991Apr25.235234.27452@agate.berkeley.edu> c60b-1eq@e260-1a.berkeley.edu (Noam Mendelson) writes:
><You can remap up to 96K of your VGA or 256K EGA's memory as conventional
><memory (I know of at least one shareware program which does this).
>This only works until your VGA attempts to put itself into a graphics mode.
>If you're using any video RAM as conventional RAM at this time and your
>program can't trap the attempt to use a graphics mode, your system (or at
>least your program) will probably come to an abrupt halt.

Well of course; I thought that was rather obvious.  You can't use the same
memory for two purposes.  However, the program I'm referring to will make
your system think that you only have a CGA installed.  It actually works
quite intelligently.

-- 
+==========================================================================+
| Noam Mendelson   ..!ucbvax!web!c60b-1eq       | "I haven't lost my mind, |
| c60b-1eq@web.Berkeley.EDU                     |  it's backed up on tape  |
| University of California at Berkeley          |  somewhere."             |