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From: marb@sphinx.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: IBM PS/2 clock speed
Message-ID: <2258@sphinx.uchicago.edu>
Date: Wed, 2-Sep-87 17:42:44 EDT
Article-I.D.: sphinx.2258
Posted: Wed Sep  2 17:42:44 1987
Date-Received: Fri, 4-Sep-87 03:25:15 EDT
Organization: U. Chicago Computation Center
Lines: 25
Keywords: PS/2, clock



I was recently asked this question and haven't been able to find a
good answer:

Is there any way to change the clock speed in an IBM PS/2 model 30?
Either a hardware or software solution would be acceptable.
The problem: the PS/2 runs at 8 MHz and so software (games, educational
programs) that was designed to run at 4.77 MHz is too fast. (I guess the
guy who asked me this question is a frustrated asteroids player)

It has been suggested that he could program the 1C interupt, which is
called every now and then by the OS (18 times/sec?), to delay for a set
ammount of time.  Does anyone know how to do this???  

Does anyone have any other suggestions???

Please send email, and I'll post a summary.  Thanks!


Marty Billingsley         (marb@sphinx.UUCP or marb@sphinx.UChicago.edu)

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