Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site utcsrgv.UUCP Path: utzoo!utcsrgv!peterr From: peterr@utcsrgv.UUCP (Peter Rowley) Newsgroups: net.micro.pc Subject: Bug on PC motherboard Message-ID: <1738@utcsrgv.UUCP> Date: Tue, 12-Jul-83 21:35:15 EDT Article-I.D.: utcsrgv.1738 Posted: Tue Jul 12 21:35:15 1983 Date-Received: Tue, 12-Jul-83 22:54:13 EDT Organization: CSRG, University of Toronto Lines: 24 I asked the Toronto Computerland about the colour bug, and they even said they phoned IBM about it, but they were of no help. So I checked the new tech. ref. manual at the IBM Product Centre. The circuit containing the crystal has changed. Here are schematic fragments, from the Aug 81 tech. ref. man. and the latest, 1983 ed.: -------- ----------- X1|----+---- X1|-----+------ | | | | | | 8284A | 10pF 5-50pF var. 8284A | 510ohm 5-30pF var. | | | | | | | ----+ | gnd | | | | | | XTAL 14.31818MHz | gnd XTAL 14.31818MHz | | | | | X2|--------- | 510ohm | | | | | | X2|-----+------ -------- ----------- 1981 1983 Do you know of any other hardware bugs that IBM has fixed?