Message-ID: <33C08F31.2A78@lausd.k12.ca.us>
Date: Sun, 06 Jul 1997 23:39:45 -0700
From: "csantill AT lausd DOT k12 DOT ca DOT us" <csantill AT lausd DOT k12 DOT ca DOT us>
MIME-Version: 1.0
To: djgpp AT delorie DOT com
Subject: New Approach to VGA MEM
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from: csantill AT lausd DOT k12 DOT ca DOT us

I want to map an array to VGA mem but I'm not sure how.
I don't want to turn off memory protection either.
I've seen this done w/a BASIC compiler(PowerBasic).

This is want I want to do instintively but I know it's wrong:
// initialize vid_mem as [200][320] char array at 0xA0000
unsigned char *vid_mem[200][320]=(unsigned char *)0xA0000

This seems more correct though but untested:
// initialize p as [64000] char array at 0xA0000
unsigned char *p[64000]=(unsigned char *)0xA0000
// initialize vid_mem as [200][320] array at &p[0] which should be
0xA0000
unsigned char vid_mem[200][320]=(unsigned char *)&p

Another thing I consider is creating a struct at 0xA0000 & pointing
vid_mem
at that.

Can anyone tell where to go(& please don't tell me the FAQ because that
like
answering a question w/a question)?