More Ram for DOS-73?

Ken Mandelberg km at emory.uucp
Thu Jul 14 23:09:12 AEST 1988


I remember this being discussed a while back, but didn't pay enough
attention at the time.

The DOS-73 card for the Unix-PC/3B1 has 512K of RAM on it.  However,
some of that RAM is used by "DOS-73" itself (presumably for the
hardware emulation and communication with UNIX), so the board does not
look like a full 512K MS-DOS machine to DOS software. Specifically
"chdsk" only sees 483K of total memory with 425K available. I suppose
on a real 512K MS-DOS machine it would say 512K total memory.

Well some MS-DOS software is written so that if it expects to run on a
machine with at least 512K of ram, it just won't run if it thinks there
is less. I'm in the position right now of fighting one of those
programs.

Does anyone know of any way to squeeze a little more memory onto the
board, or otherwise get around the problem?
-- 
Ken Mandelberg      |  {decvax,sun!sunatl,gatech}!emory!km  UUCP
Emory University    |  km at emory                             BITNET
Dept of Math and CS |  km at emory.ARPA                        ARPA,CSNET
Atlanta, GA 30322   |  Phone: (404) 727-7963



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