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From: drs@bnl.UUCP
Newsgroups: net.micro.pc
Subject: Large address spaces on the PC
Message-ID: <423@bnl.UUCP>
Date: Thu, 19-Apr-84 21:03:09 EST
Article-I.D.: bnl.423
Posted: Thu Apr 19 21:03:09 1984
Date-Received: Sun, 22-Apr-84 08:53:15 EST
Lines: 22

Has anyone had any strange experiences when the memory in a PC was increased?

Today I installed a Tecmar Captain board which expanded the amount of RAM to
the maximum 640K permitted on the XT.  DOS boots up correctly, but a program
which has been running well for ages now almost immediately crashes with a
"Stack Overflow" message, and attempts to recompile a small Pascal program
with the IBM pascal compiler aborts with a "Compiler out of memory" error
message! <insert the sound of teeth grinding>

To make matters worse, I can make the first problem vanish by running the
program from DEBUG, or by setting the swithes on the board to show < 512K
total memory.  It may also eliminate the seconde.  I don't suspect the Tecmar
hardware since a friend of mine installed one with the same result.

The Venix operating system seems to be unaffected.  Any help would be
appreciated.  I'll post the solution since anyone running unix on this
machine needs all the memory they can get!  

				Dave Stampf
				Applied Math. Dept.
				Brookhaven Natl. Lab.
				Upton, N.Y. 11973 (516 282 4148)