To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Subject:	Accessing physical addresses again...
Date:	Thu, 04 Feb 93 09:19:34 -0600
From:	Mark Littlefield <mll AT krypton DOT jsc DOT nasa DOT gov>

Sorry to bring this up again but we've been having mail problems here and apparently I was
accidentally dropped from the list for a time so I didn't see any responses from my last
query.

What I need to do is access certain memory locations in the 0xE0000000 memory range (>256
meg).  These locations are mapped to the VME bus that our 486 is attached to.  I've look
at the docs and the sources and I don't see an obvious way of addressing physical memory
in protected mode (all of the memory gets mapped one way or another).

If there was any discussion on this topic after my last query I would appreciate it if
some kind soul would forward the responses to me.

thanks,

mark

=====================================================================
Mark L. Littlefield              Intelligent Systems Department
internet: mll AT superman DOT jsc DOT nasa DOT gov 
USsnail:  Lockheed Engineering and Sciences 
          2400 Nasa Rd 1 / MC C-19            
          Houston, TX 77058-3711
====================================================================

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