---------Krell's College Board---------
---------SAT Preparation Series--------
A 4am crack                  2017-09-04
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Name: Krell's College Board SAT
  Preparation Series
Genre: educational
Year: 1983
Publisher: Krell Software
Platform: Apple ][+ or later
Media: 6 single-sided 5.25-inch disks
OS: DOS 3.3
Previous cracks: none (of this version)

Six disks:

  - Math I
  - Math II
  - Test of Standard Written English I
  - Test of Standard Written English II
  - Verbal
  - Vocabulary

These disks were automatically cracked
by Passport. Here is the transcript for
"Math I":

                 --v--

T00,S00 FOUND DOS 3.3 BOOTLOADER
USING DISK'S OWN RWTS
WRITING TO S5,D2
SWITCHING TO BUILT-IN RWTS
T00,S02,$49: 03 -> 04
T00,S02,$52: 4CB13EEAEA -> A9D520B838
T00,S02,$5F: BB -> B8
T00,S02 RWTS REQUIRES EXTRA NIBBLES AND
TIMING BITS AFTER THE DATA PROLOGUE BY
JUMPING TO $BECA.
T00,S02,$F4: EABD8CC010FBC9ADD0E84CCA3E
-> A056BD8CC010FBC9ADD0E7A900
T00,S03,$91: E9 -> DE
T00,S03,$35: E9 -> DE
T00,S02,$9E: E9 -> DE
CRACK COMPLETE.

                 --^--

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

The other disks have similar protection
but different epilogues (that were
restored to $DE).

Quod erat liberandum.

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A 4am crack                    No. 1401
------------------EOF------------------
