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| User rating: | awaiting 8 votes (8 left) |
Credits :
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Intro used in this crack:
Download :
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User Comment
Submitted by iAN CooG on 31 August 2010
It's due to a "bug" in the Cruelcrunch 2.2 preamble code. See also Wicked
080D A2 FF LDX #$FF
080F 78 SEI
0810 9A TXS
0811 D8 CLD
0812 20 A3 FD JSR $FDA3 ;
0815 20 50 FD JSR $FD50 ;<< this will corrupt the crunched data if the
crunched prg goes over $a000, because $a000 is
trashed with $55 after the RAM-test finishes
0818 20 15 FD JSR $FD15 ;<< if there are data at $fd30-fd4f, forget about
those bytes aswell, but it's not the case here =)
081B 20 5B FF JSR $FF5B ; FIX: just nop those 2 JSRs
Please note that's possible the crackers never noticed this because they were
using EXOS or SpeedDos kernals, those have a different RAM-test that doesn't
trash byte at $a000, aswell as a non-destructive $fd15 vector reset routine.
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User Comment
Submitted by cba on 31 August 2010
| Crashing after the intro (Yellow screen only) , not tested on a real c64. |
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