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From: ins_aeas@jhunix.UUCP (Earle A .Sugar)
Newsgroups: net.micro,net.micro.pc
Subject: Changing IBM PC clock crystals
Message-ID: <2135@jhunix.UUCP>
Date: Sat, 8-Mar-86 23:10:23 EST
Article-I.D.: jhunix.2135
Posted: Sat Mar  8 23:10:23 1986
Date-Received: Wed, 12-Mar-86 21:38:47 EST
Distribution: net
Organization: The Johns Hopkins University
Lines: 31
Xref: watmath net.micro:14015 net.micro.pc:7361

I have heard that it is possible to speed up an IBM PC by replacing the
stock clock crystal with a faster one.  Has anybody actually done this?
I wouldn't doubt that IBM designed the PC to run at a higher clock 
speed and released it with a lower one to increase quality  control.
If anybody has done this, how are various drivers (particularly 
the disk drive driver) that use software timing loops affected?
Of course, if I really wanted a major project, I could have clock
speed cut in half when the disk drive is being active, but I doubt
that my boss would appreciate her PC being bastardized like that.
She is looking for a cheap way to speed up her PC, which is extremely
slow for the heavy database work she does.  Because of university politics,
she has not been able to get an AT or a faster compatible.  
     If it is not feasible to just swap crystals, does anybody know of
a cheap speedup board that is reasonably priced (most seem to be 
in the >$500 range).  8087 support is not necessary.

adthanksvance

-- 
______________________________________________________________________________

Earle A. Sugar
Disclaimer:"Nobody else here at JHU ever agrees with my opinions"
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