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Mail Archives: djgpp/1992/09/18/05:41:23

Date: Fri, 18 Sep 1992 09:47:48 +0100
From: "Neil J Long, Dept of Materials" <long AT vax DOT ox DOT ac DOT uk>
To: DJGPP AT SUN DOT SOE DOT CLARKSON DOT EDU
Cc: long AT vax DOT ox DOT ac DOT uk
Subject: accessing PC memory at D000:0000 directly

HI
Could someone point me at a specific doc or just send me a couple of lines of
example code so that I can read/write to a data acquisition card which is dual
ported to the D000 segment. It is exactly like writing directly to video memory
except that I cannot see how GO32 deals with this area of memory. 
For standard PC C compilers I set a (char far) pointer to 0xd000000.
thanks
Neil Long


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