From: rogers AT westmont DOT edu (wfrogers)
Newsgroups: comp.os.msdos.djgpp
Subject: Trouble accessing DOS upper memory
Date: 21 May 2003 22:35:44 -0700
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To: djgpp AT delorie DOT com
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I am trying to access 0xD000 using a simple C program compiled with
DJGPP and am getting

Exiting due to signal SIGSEGV
General Protection Fault at eip=0000362a

When I access video memory at 0xB800, no problem.  When I try 0xD0000,
I either get the error, or if it works, I get data which is the same
no matter what offset I use.  The purpose is to access data being
written by an ISA data aquisition card.  Thanks for any help.  WFR

Operating system Win98