Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!jarthur!usc!venera.isi.edu!gremlin!nrtc!wdarden
From: wdarden@nrtc.nrtc.northrop.com (Bill Darden <wdarden>)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: 8088 4.77MHz -> NEC V20 8MHz
Message-ID: <8334@gremlin.nrtc.northrop.com>
Date: 18 Jul 90 23:16:10 GMT
References: <2330@kannel.lut.fi>
Sender: news@gremlin.nrtc.northrop.com
Reply-To: wdarden@nrtc.nrtc.northrop.com (Bill Darden)
Distribution: comp
Organization: Northrop Research & Technology Center, Palos Verdes, CA
Lines: 17

In article <2330@kannel.lut.fi> riiali@kannel.lut.fi (Pekka Riiali) writes:
>
>I have a Tandon XT with 4.77 MHz 8088 processor. I'd like to know
>if it is possible to change the processor to 8 MHz NEC V20. Half of
>the memory chips are 64-15RS and the other half are 256-12. I guess
>that there will be some problems with the slow memory.
>Any kind of help is appreciated.

Your problem will not be the speed of the memory chips.  You will
need to provide a second oscillator circuit into the 8284 and control
the switching of it.  The other problem *might* be the speed of the
other chips.  It will be cheaper to buy an 8 MHz XT mother board,
since you already have your DRAM.

Good luck,

BiLL.....