Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!tektronix!hplabs!sri-unix!Wiedemann@RADC-MULTICS.ARPA From: Wiedemann@RADC-MULTICS.ARPA Newsgroups: net.micro Subject: BDOS Help Needed Message-ID: <12205@sri-arpa.UUCP> Date: Wed, 8-Aug-84 08:27:00 EDT Article-I.D.: sri-arpa.12205 Posted: Wed Aug 8 08:27:00 1984 Date-Received: Fri, 10-Aug-84 08:09:08 EDT Lines: 18 We have a vintage Imsai 8085 S-100 system with two 8" SS/SD drives here that we are configuring as an RCPM system for out local clup. (Mohwk Valley Microcomputer Club) All the software is finished and runs well. I purchased and installed the Optronics Technology timeout board on the disk drives to reduce disk/head wear,since this board will be operational 24 hours a day. Here's the problem: The timeout board triggers on the "drive select" line from the controller. When it sees this signal, it turns the 115VAC back on to the spindle motor. Several seconds after the loss of this signal, the board will power the spindle motor down. This system uses "Fischer-Freitas" CP/M 2.2. I need to find someone who has worked with this BDOS and can point me in the direction of how to patch it to bring the drive select down after a disk read. I'd do it myself, but time is at a premium right now and I'd like to get this board on line. Thanx much, in advance! Wolf Wiedemann RADC-MULTICS