[Scummvm-tracker] [ScummVM :: Bugs] #12303: SCUMM: Maniac Mansion C64 and Zak C64 Abort with Error

[ScummVM :: Bugs]

#12303: SCUMM: Maniac Mansion C64 and Zak C64 Abort with Error
---------------------------------+-----------------------------
Reporter:  andrea-petrucci-1975  |       Owner:  sev-
    Type:  defect                |      Status:  new
Priority:  high                  |   Component:  Engine: SCUMM
 Version:                        |  Resolution:
Keywords:                        |        Game:  Maniac Mansion
---------------------------------+-----------------------------
Comment (by BenCastricum):

 I checked and have the same MD5s as you, I was md5summing the maniac game
 from dott, which is the DOS version.

 Meanwhile I figured out the case of the problem. ScummVM incorrectly sets
 the encryption key to 0xFF, but the .LFL files aren't encrypted at all. If
 I hardcode scummvm to use 0x00 as key, the games from the extracted disk
 images run fine.

 The solution is to fix the encryption key selection. This needs a bit of
 research (it's been a while). I'll get back on this.
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/12303#comment:9>
ScummVM :: Bugs <https://bugs.scummvm.org>
ScummVM