-----------Pattern Completion----------
A 4am crack                  2017-02-14
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Name: Primary Math: Pattern Completion
  Lessions 1-23
Genre: educational
Year: 1986
Credits:
  Programmed by Thomas J. Teater
  Graphics by Triska Paul
  Storyboard by Jill Bennette
Publisher: Prescription Learning
Media: single-sided 5.25-inch floppy
OS: Pronto-DOS
Previous cracks: none
Identical cracks:
  #626 Quest Intro Disk
  #354 Comprehension
  #349 Subtraction
  #348 Addition
  #340 Multiplication

This disk was automatically cracked by
Passport. Here is the transcript:

                 --v--

READING FROM S6,D1
T00,S00 FOUND DOS 3.3 BOOTLOADER
USING DISK'S OWN RWTS
WRITING TO S6,D2

THE DISK WAS COPIED SUCCESSFULLY, BUT
PASSPORT DID NOT APPLY ANY PATCHES.

POSSIBLE REASONS:
- THE SOURCE DISK IS NOT COPY PROTECTED.
- THE TARGET DISK WORKS WITHOUT PATCHES.
- THE DISK USES AN UNKNOWN PROTECTION,
  AND PASSPORT CAN NOT HELP ANY FURTHER.

PRESS ANY KEY TO CONTINUE

                 --^--

More information and source code is
available at
https://archive.org/details/Passport4am

                   ~

The original disk is very lightly
protected. They changed one epilogue
byte on track $00, sector $00 -- the
only sector where it's ignored anyway
(since it's read by the disk controller
ROM routine, which doesn't verify
epilogue bytes). This renders it
uncopyable by COPYA and other sector-
based copiers, and they didn't need to
make any changes to the rest of the
disk. It's literally the least they
could do.

Quod erat liberandum.

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A 4am crack                    No. 1016
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