X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f
Date: Sun, 13 Aug 2006 23:05:26 -0400
Message-Id: <200608140305.k7E35Qiq023044@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: OliverSzasz AT oncotherm DOT org
CC: djgpp AT delorie DOT com
In-reply-to: 
	<714817CA32ED3143B96B69D0D3574C5A311B64 AT server DOT oncotherm DOT oncotherm DOT org>
	(OliverSzasz AT oncotherm DOT org)
Subject: Re: copy from physical memory
References:  <714817CA32ED3143B96B69D0D3574C5A311B64 AT server DOT oncotherm DOT oncotherm DOT org>
Errors-To: nobody AT delorie DOT com


Most DPMI servers don't support the physical mapping calls.  For DJGPP,
there's two ways of doing it:

1. If the address is in DOS memory, use dosmemget() or dosmemput().

2. Otherwise, the easiest way to do it is to use the "nearptr"
   routines (see <sys/nearptr.h> and related docs).  This gives you
   essentially unlimited access to the physical address space,
   assuming your OS allows such things.