Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site bbnccv.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!bbnccv!sdyer From: sdyer@bbnccv.UUCP (Steve Dyer) Newsgroups: net.micro.pc Subject: Re: AT xtal anecdotes Message-ID: <129@bbnccv.UUCP> Date: Wed, 3-Jul-85 11:36:59 EDT Article-I.D.: bbnccv.129 Posted: Wed Jul 3 11:36:59 1985 Date-Received: Thu, 4-Jul-85 05:33:25 EDT References: <743@bbnccv.UUCP> <1200028@ur-univax.UUCP> Organization: Bolt Beranek and Newman, Cambridge, MA Lines: 18 > I am curious if you had the regular math coprocessor 80287 installed too. > I have heard that it normally operates at 4MHz (1/3 of the clock rate). > How does it behave at beefed up clock rates? > Thanks Rajiv Yes, I have a 287 installed also. I guess it must be running at slightly over 6MHz, since my crystal is roughly 18.4Mhz. The IBM coprocessor diagnostics and a separate set of diagnostics from MicroWay all continue to work without errors--naturally, I can't vouch for how it will behave in the long term. So far I haven't noticed any anomalous calculations. By the way, I haven't noticed any heat-related problems--I can keep the machine on all day and it continues to work. -- /Steve Dyer {decvax,linus,ima,ihnp4}!bbncca!sdyer sdyer@bbnccv.ARPA