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SMB2 - Restore original Spiny behavior

Hack of Super Mario Bros. 2

Description:

This is an IPS patch intended to restore the original Spiny Egg behavior to this game, much the same as the patch existing for the NES version of Super Mario Bros.

This replaces the hex values found in the original FDS image of…

20 31 8F A0 02 95 58 C9 00 30 01 88

…with…

A0 02 95 58 C9 00 30 01 88 20 31 8F

…which re-enables the horizontal movement logic.

This has already been done for the NES predecessor, but there did not appear to be a patch for this game, so this was created. More info is on available with the original NES patch on tcrf.net or the comments in the disassembly of this game hosted here as well. Additionally, a basic writeup is available on the author’s site.

ROM / ISO Information:

  • Super Mario Bros. 2 (J) [b1] (GoodNES 3.14)
  • CRC32 077b1892
  • MD5 882bb4e73658d38483078fa227d58183
  • SHA-1 3b8c8998b4887d6dd676965943d69a320738ab9c
  • SHA-256 3200fa7325ff110e03518689245116707952aa8222bc283f94c4e774f4fcadbc

Links:

Screenshots:


Credits:

Credits
ContributorType of contributionListed credit
KoohiisanHacking

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