Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.berkeley.edu.BERKELEY.EDU
Path: utzoo!watmath!clyde!burl!ulysses!ucbvax.berkeley.edu!cory!iverson
From: iverson@cory.BERKELEY.EDU (Tim Iverson)
Newsgroups: net.micro,net.micro.pc
Subject: Fast AT xtals?  How about fast XT xtals?
Message-ID: <11541@ucbvax.berkeley.edu.BERKELEY.EDU>
Date: Fri, 24-Jan-86 23:06:16 EST
Article-I.D.: ucbvax.11541
Posted: Fri Jan 24 23:06:16 1986
Date-Received: Sun, 26-Jan-86 03:52:40 EST
References: <11540@ucbvax.berkeley.edu.BERKELEY.EDU>
Sender: usenet@ucbvax.berkeley.edu.BERKELEY.EDU
Reply-To: iverson@cory.UUCP (Tim Iverson)
Organization: University of California, Berkeley
Lines: 17
Xref: watmath net.micro:13588 net.micro.pc:6674


	After reading the articles on improving the speed of the AT with
faster chips and faster xtals, I am wondering if this is possible for the
PC and the XT.

	I have replaced the 5Mhz 8088 with an 8Mhz V20, which works fine.
But, when I replaced the clock chip with the one for the V20, I got a blank
screen on cold-boot - not even a cursor.  The V20 type clock chip divides the
xtal frequency by 1/2 instead of 1/3 and has a 50% duty instead of 33%.  All
of this is fine for the V20, so something else must be going wrong.  If I had
a 'scope, I could tell you more, but I don't.

	Any clues to resolving this problem would be appreciated.

Thanks,
Tim Iverson.
(iverson@cory.berkeley.edu)