Path: utzoo!utgpu!watmath!clyde!att!rutgers!gatech!bloom-beacon!oberon!sm.unisys.com!csun!csuna!abcscnge
From: abcscnge@csuna.UUCP (Scott "The Pseudo-Hacker" Neugroschl)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Can you use Expanded memory as Extended?
Summary: Kudos to Intel, questions on PS/2
Keywords: PC/AT, RAM, memory, expanded, extended, EMS
Message-ID: <1538@csuna.UUCP>
Date: 11 Jan 89 04:59:06 GMT
References: <3129@dalcs.UUCP> <3136@ima.ima.isc.com>
Reply-To: abcscnge@csuna.UUCP (Scott "The Pseudo Hacker" Neugroschl)
Distribution: na
Organization: California State University, Northridge
Lines: 19

In article <3136@ima.ima.isc.com> johnl@ima.UUCP (John R. Levine) writes:
>If you are asking if it's possible to flip memory back and forth between
>extended and expanded without taking apart your computer, it happens for
>free on PS/2 boards and otherwise is as far as I can tell unavailable.

Intel did it right with the AboveBoard 286.  There are _NO_ DIP switches, NO
jumpers.  The board comes with software to program a EEPROM on the board.
From software, you can choose any AboveBoard in your computer and configure
it however you like.  I don't know why more companies don't use this scheme.
In fact, I don't know why IBM didn't use if for the MicroChannel, since not
all PS/2's run DOS, how does the POS software know where to find the .ADF file?
Intel's method (S/W programmable EEPROM) seems to be much more intelligent.


-- 
Scott "The Pseudo-Hacker" Neugroschl
UUCP:  ...!sm.unisys.com!csun!csuna!abcscnge
-- "Beat me, whip me, make me code in Ada"
-- Disclaimers?  We don't need no stinking disclaimers!!!