Chris wrote:
OK, I found my notes. The code to be patched is at the 9th sector of the file, byte $3C. Change 20 00 60 (JSR $6000) to EA EA EA. This will disable the checksum routine.
Thanks, this worked. XD The (C) symbol is (I figured this by examining a savestate from the C64 version) the dollar sign.
Oddly, some emulators (Applewin) are not affected by the checksum routine. The game will run with altered text and the checksum still enabled.
Might have something to do with the illegal 6502 opcode that's somewhere in there.
Moll.