Article View: comp.sys.atari.st
Article #7061Re: Drive question
From: Howard Chu
Date: Tue, 16 Jan 1990 17:31
Date: Tue, 16 Jan 1990 17:31
19 lines
1602 bytes
1602 bytes
In article <5948@umd5.umd.edu> matthews@umd5.umd.edu (Mike Matthews) writes: >In article <1871@mrsvr.UUCP> krieg@jupiter.UUCP (Andrew Krieg) writes: >>I have had this weird quirk in my ST system ever since I got it (3 years ago) >>and I am wondering if it is normal. I have a 520 ST, a single sided disk and > >It is. More elaborately... There's only one set of data and control lines that go to both disk drives. A particular drive is chosen by the proper number (0 or 1) appearing on the drive select lines. (The controller is capable of addressing 4 floppies, but there are only enough lines on the ST interface to address 2. Oh well.) In any case, the Motor On command gets fed to both drives, so both will start spinning. However, since only one drive's "select" signal will ever be active at a time, the other drive sits there, the light doesn't come on, it doesn't respond to other commands, etc... -- -=- PrayerMail: Send 100Mbits to holyghost@father.son[127.0.0.1] and You Too can have a Personal Electronic Relationship with God!
Technical Details
Message-ID:
<10664@stag.math.lsa.umich.edu>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!umich!samsung!usc!zaphod.mps.ohio-state.edu!math.lsa.umich.edu!hycReferences:
<1871@mrsvr.UUCP> <5948@umd5.umd.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!umich!samsung!usc!zaphod.mps.ohio-state.edu!math.lsa.umich.edu!hyc
From: hyc@math.lsa.umich.edu (Howard Chu)
Newsgroups: comp.sys.atari.st
Subject: Re: Drive question
Message-ID: <10664@stag.math.lsa.umich.edu>
Date: 16 Jan 90 17:31:52 GMT
References: <1871@mrsvr.UUCP> <5948@umd5.umd.edu>
Sender: news@math.lsa.umich.edu
Reply-To: hyc@math.lsa.umich.edu (Howard Chu)
Organization: University of Michigan Math Dept., Ann Arbor
Lines: 19
UUCP-Path: {mailrus,umix}!um-math!hyc