Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxj!houxm!whuxlm!harpo!decvax!genrad!teddy!panda!talcott!harvard!seismo!brl-tgr!tgr!POURNE@Mit-Mc.ARPA From: Jerry E. Pournelle Newsgroups: net.micro.cpm Subject: macrotech board update... Message-ID: <7671@brl-tgr.ARPA> Date: Thu, 24-Jan-85 03:31:47 EST Article-I.D.: brl-tgr.7671 Posted: Thu Jan 24 03:31:47 1985 Date-Received: Sun, 27-Jan-85 07:14:22 EST Sender: news@brl-tgr.ARPA Organization: Ballistic Research Lab Lines: 16 fascinating. One of the real difficulties is that there are KNOWN bugs in the B-step revs of the 80286 chip; so many that CompuPro refuses to sell a 286 board except for "development", and warns users. Macrotech and Gifford think they have fixed or wired around all the problems, and perhaps they have, although your strange experiences make one wonder. Dual processors were a great idea in their time. After some thought, though, I am converting my system to a new CompuPro 80286/287 board (as of now they are shipping the C-step 80286 chip, which doesn't have the problems of the b step) and a Z-80 SPUZ slave Z-80 p[rocessor. This will run both processors at once, and if fed a z-80 .com file that runs and the 286 is available for other simultaneous work. Seems more advanced than a dual processor. But I will also keep a vanilla z-80 around to write books with until I'm sure... jep