Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site sfmin.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!mhuxm!sftig!sfmin!jeffj
From: jeffj@sfmin.UUCP (J.S.Jonas)
Newsgroups: net.rumor
Subject: Re: Computer Horror Stories [Funny]
Message-ID: <668@sfmin.UUCP>
Date: Mon, 10-Mar-86 17:33:51 EST
Article-I.D.: sfmin.668
Posted: Mon Mar 10 17:33:51 1986
Date-Received: Wed, 12-Mar-86 03:02:23 EST
References: <14700001@hplabsb.UUCP> <476@mmm.UUCP>
Distribution: net
Organization: AT&T Bell Laboratories, Summit N.J.
Lines: 20

> Anybody remember how to walk an IBM 1130's disk drives?  I recall
> stories that the right program would start them marching across the
> room.
> 			Roger Hayes

I have very fond memories of the IBM system 1130, and the disks
(2314 disks?  2310 disks? I forgot the number) were VERY SLOW!
The head had a ratchet mechanism (I have one in my closet as a
souvenour) to step the head a track at a time.  100 tracks per inch,
203 tracks edge to edge.  It took about 1 second to seek from edge to edge,
so IBM's original disks NEVER could do that.

The Calcomp DS-12 disk drive was another matter.  It was attached to the
1130, and used an 11 platter disk.  The heads were operated on a linear
motor, and moved FAST!  I could imagine it rocking if you went from
edge to edge repeatedly!  There were other non-IBM disks that could be
used, and maybe those marched well too.  But not the original disks

			Jeff 'archiver of 1130 parts' Skot
			{ihnp4 | allegra | cbosgd } attunix ! jeffj