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From: bridger@Rand-Unix.ARPA
Newsgroups: net.micro.cpm
Subject: Re: Question from a Novice
Message-ID: <1114@sri-arpa.UUCP>
Date: Thu, 21-Jun-84 20:50:44 EDT
Article-I.D.: sri-arpa.1114
Posted: Thu Jun 21 20:50:44 1984
Date-Received: Thu, 28-Jun-84 00:39:03 EDT
Lines: 13

From:  Bridger Mitchell <bridger@Rand-Unix.ARPA>

A contributing factor may be the BIOS firmware shipped with
the Kaypro 4's and 10's.  It doesn't correctly support the CPM disk-reset
function call.  A drive, once logged in with a double-sided disk, remains
double-sided until the next warm boot, despite any disk-reset call.
This is a pain in programs that permit disk swapping, if you have
both single and double-sided disks.

One solution is the CP/M upgrade from Plu*Perfect Systems, which does
the disk-resets correctly.

--bridger