Math blaster plus IIgs v1 v1.1 (Davidson, 1989)

[toinet]

#944 - #945 - Another talking math eduware from Davidson. The main game is pretty fun to play!

Note: the same crack applies for v1.0 and v1.1.
Note 2: from my emulator, the program does not boot fine from the disk. From another Finder boot, the game runs fine...
Note 3: I tried the HDINSTALLER program but... it crashed too

Disk structure
This is a standard 3.5" ProDOS disk with the usual bad block ($0308).

How to copy
Use ZZCopy or Photonix II to copy your weird original disk. Then, store it in a dry and safe place (or return it to Davidson...)

How to crack
As usual, we search for the 0308 pattern and find it at the end of the MBPLUS.SYS16 file. So...

Launch Block.Warden
Prefix /MATHBLASTERPLUS
Follow file MBPLUS.SYS16
At offset $F331: 08 03 -> 03 08
Save the block back onto disk.

The disk images are available at http://www.brutaldeluxe.fr/crack/

Reboot (from another clean system disk) and... enjoy,

LoGo
9/2017