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Notes:Clu Clu Land (NES)

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This page contains notes for the game Clu Clu Land (NES).

Animal Crossing (USA) ROM

Appears to be a modified World ROM - its the same as said ROM but prefixed with 0x3FE0 of 00s, then EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA A5 10 29 02 60 and the following bytes are changed:

  • 0x561 - 80 to 08
  • 0x358C - A5102902 to 20E0BFEA
this modifications has nothing to do with actual game code. these are only for hacking some NMI/IRQ stuff to simplify the emulation (or may be to fix some emulator issues with NMI handling..)… code at 0x358C replaces LDA $0010,AND #$02 opcodes with JSR to $BFE0 address where they put the same LDA $0010,AND #$02 opcodes but prefixed with 12 NOPs which is just dumb cpu delay trick. the original game has no code at 8000-BFFF, it is only 16K in size, the VC rom is expanded to 32K and has an extra space to put this patch. the rest of extended space is empty at all. "prefixed with 00's" its's just adding an empty 16K prg bank beforehead lol (the same with donkey kong btw--Cah4e3 (talk) 11:11, 16 February 2019 (EST))