Re: Those Apple ][ clones...

[david@uow.edu.au (David Wilson)]

supertimer@aol.com (Supertimer) writes:
>My programming experience is limited to the scripting
>languages like HyperTalk and of course Applesoft but
>I surmise that since they can't copy Apple's copyright
>message, they probably trap ProDOS when it tries to
>stop upon not finding that message and then forces
>it to continue.

Easier would be to replace the sequence of bytes that make up the
string "APPLE ][" with something else that happens to have the
same checksum when fed through the ProDOS algorithm. Given you are
mapping 8 bytes down to a single byte there must be many patterns that
give the required result.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia