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From: hgm@lanl-a.UUCP
Newsgroups: net.micro.pc
Subject: DOS 2.1 Floppy Disk Speed-up
Message-ID: <7540@lanl-a.UUCP>
Date: Fri, 18-May-84 13:35:52 EDT
Article-I.D.: lanl-a.7540
Posted: Fri May 18 13:35:52 1984
Date-Received: Sat, 19-May-84 01:43:44 EDT
Organization: Los Alamos National Laboratory
Lines: 12

The diskette parameter table for DOS 1.0 through 2.0 is described
on pages 137 through 141 of the 1983 edition of Peter Norton's book,
"Inside the IBM PC" published by Robert J. Bradey Company.
He describes a couple ways to change the table.

However, in DOS 2.1, if you change the head settle time, and
then access the floppy drives, the floppy driver (or some other
code) sets the head settle time back again. It does not seem to set other
parameters back if you have changed them.

Is there anyone who knows the driver or the code responsible for doing
this well enough to provide a patch to it?