Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!ut-emx!boerner
From: boerner@ut-emx.UUCP (Brendan B. Boerner)
Newsgroups: comp.sys.ibm.pc
Subject: what to do about 384K of extended memory?
Message-ID: <13692@ut-emx.UUCP>
Date: 3 Jun 89 23:18:30 GMT
Organization: UT Austin Computation Center, Microcomputer Services
Lines: 18

Suppose you bought a computer, such as an IBM PS/2 Model 60 for
instance, which comes with 1Meg of RAM.  You then have 640K of
conventional memory and 384K of extended memory.  What happens when
you buy another 512K or 1024K of extended memory?  As far as I can
tell, when adding extended memory, you can only set the DIP switches
(for non PS/2 memory boards) at every 512K mark.  It would seem that
you could a) set the board to start at address 0x180000 (1.5Meg mark)
and leave a hole between the end of the 384K which starts at the 1Meg
mark and the added extended memory, i.e. a 128K hole between 0x120000
and 0x180000 or b) set the board to start at 0x100000 and lose the
384K.  Can anyone please confirm, deny or clarify this?

Brendan
------------------
Brendan B. Boerner		Phone: 512/471-3241
Microcomputer Services		The University of Texas @ Austin
Internet: boerner@emx.utexas.edu    UUCP: ...!cs.utexas.edu!ut-emx!boerner
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