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Article View: comp.sys.ibm.pc.hardware
Article #20151

Re: What's wrong with OPTi chipsets?

#20151
From: Jimmy Liberato
Date: Tue, 12 Jan 1993 18:20
14 lines
1063 bytes
dvs@ze8.rz.uni-duesseldorf.de (Wolfgang R. Mueller) writes:

>The Opti chipset is a bit inflexible concerning shadow ram allocation.
>...

This brings up a question.  Why is it that even on those systems that allow
recovery of some of the unused shadow ram, they can never readdress more than
256K?  This is curious because there is only 96K of ROMs to shadow on most
systems (C000-C7FF and F000-FFFF). 384K - 96K = 288K.  What happens to the 
other 32K?

--
Jimmy Liberato   liberato@drivax.mry.novell.com
                 ...uunet!drivax!liberato
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Message-ID: <SQRWBHT1@dri.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!drivax!liberato
References: <1993Jan7.174610.18631@murdoch.acc.Virginia.EDU> <dvs.43.726474459@ze8.rz.uni-duesseldorf.de>

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Newsgroups: comp.sys.ibm.pc.hardware
Path: arc1-ca.pugleaf.net!sparky!uunet!drivax!liberato
From: liberato@dri.com (Jimmy Liberato)
Subject: Re: What's wrong with OPTi chipsets?
Message-ID: <SQRWBHT1@dri.com>
Reply-To: liberato@drivax.mry.novell.com (Jimmy Liberato)
Organization: Novell/Desktop Systems Group, Monterey Development Center
References: <1993Jan7.174610.18631@murdoch.acc.Virginia.EDU> <dvs.43.726474459@ze8.rz.uni-duesseldorf.de>
Distribution: usa
Date: Tue, 12 Jan 93 18:20:41 GMT
Lines: 16