Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site pur-ee.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!inuxc!pur-ee!ecn-ee!dunkelbe From: dunkelbe@ecn-ee.UUCP Newsgroups: net.micro.cbm Subject: Re: 1541 Disk drive woes Message-ID: <2163@pur-ee.UUCP> Date: Wed, 19-Sep-84 13:24:21 EDT Article-I.D.: pur-ee.2163 Posted: Wed Sep 19 13:24:21 1984 Date-Received: Tue, 25-Sep-84 08:02:45 EDT Sender: notes@pur-ee.UUCP Organization: Electrical Engineering Department , Purdue University Lines: 20 Nf-ID: #R:adiron:-13700:ecn-ee:19300003:000:852 Nf-From: ecn-ee!dunkelbe Sep 19 10:47:00 1984I recently purchased a copy of Multiplan, and immediately figured out that it was copy protected by the NASTY sounds it makes as it is loaded. If you listen, after a bootstrap loader is installed, the drive tries to move to track 0. The 1541 controller is not intelligent enough to remember which track it is on when it gets a 'move to track 0' command, so it moves the total number of tracks on a diskette away from the hub, usually resulting in half of the moves beating the head mechanism against the stop. Previous correspondence on this system has proposed that this is the cause of the alignment problem: the constant over-running of track 0. Solution? Load Multiplan as seldom as possible, or be willing to periodically re-align your drive (a 15 minute process requiring only a couple of screwdrivers and a good diskette). Kirk