Date: Wed, 19 Nov 1997 17:04:13 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: "Heo, Sung-Gwan" <heo AT turbotek DOT co DOT kr>
cc: djgpp AT delorie DOT com
Subject: Re: Memory mapped I/O in protected mode
In-Reply-To: <3472DA18.223AD317@turbotek.co.kr>
Message-ID: <Pine.SUN.3.91.971119170205.9459H-100000@is>
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On Wed, 19 Nov 1997, Heo, Sung-Gwan wrote:

> How do I write a program that performs memory mapped I/O in protected
> mode?
> I have a I/O card which use D000:0000 ~ D000:0800 memory space for
> memory mapped I/O, but I must program in 32bit protected mode.

Please download the DJGPP FAQ list (available as v2/faq210b.zip from the 
same place you get DJGPP) and read sections 18.4-18.6 there.  They 
explain this in detail.