Track-By-Track - a 38 and 40 track 5.25" disk formatter

This disk formatter, like others, can trash your disks.  Use it with care.

Track-By-Track differs from other formattters in that the user can control which
tracks are formatted.  This is useful in two situations:

1) formatting disks to use 38 or 40 tracks.  All Apple II 5.25" disk drives can
use 38 tracks and most can use 40.  This gives you 8.6% or 14% more storage per
disk.

2) Restoring damaged disks.  If one sector goes bad, you can reinitialize it's
track and avoid reinitializing entire disks - if you know what you're doing.

If you have neither of the above needs, Track-by-Track is inferior to other disk
formatters.

Version 0.6 exists as an executable binary file (BIN).  You can run it from
BASIC.SYSTEM or similar shells.  Since it trashes large portions of memory,
including that used by BASIC.SYSTEM, it exits via the ProDOS MLI QUIT call.

In version 0.6, the create or extend a directory option is not functional.  This
means you must patch the volume directory yourself, with a block access utility,
to take advantage of track beyond the ordinary ones.

Disks formatted with 38 or 40 tracks will not function correctly without a minor
modification to ProDOS.  The 5.25 device driver must be patched to allow
attempts to access blocks beyond 279.  Such a modification will not interfere
with the access of normal disks in the slightest.  Making this modification is
beyond the scope of this document.

Track-by-Track requires an eighty column card in slot 3 that uses IIe/IIc 80
column card commands.

The formatting code was written in assembler by Pieter Lechner 5/19/84 and
published in "Beneath Apple ProDOS".  The interface was written by Doug Reeder
in ORCA Small C in November 1990 and is copyright 1990.  This software is
available free, and you may not charge others for it.  It can destroy data on
your disks, so no warranty of any kind is offered and use it with care.