Generic C64 prg unpacker, original idea and code from Exomizer by Magnus Lind.

The idea is simple: to simulate the C64 memory/processor, run the program until it reaches the unpack routine, usually relocated to an address lower than $0800, then to continue execution until the Program Counter returns to a normal address usually higher than $0800. At this point, save all the memory.  I normally do this process in emulators by setting breakpoints but an automatic program that does it for me is handy.  PUCrunch and Exomizer 2.0Beta7 already have their own decrunch commands.  This program should cover those 2 and almost all the remaining ones.