Famicom expansion port controllers support

This repo contains patches to add Famicom Expansion port controllers compatibility.

https://github.com/darthcloud/famicom-exp-patches

These patches are for headered iNES ROM.

Support for internal controllers is maintained in most case.

Games that loose internal controllers support

• Battletoads
• Snake Rattle n Roll
• Terminator 2

The original poll function is quite optimized already and the bank in which the poll function is located do not have obvious empty space to allow relocation/split of the poll function.

Alternation version w/ FC exp support

Some version of those games do support controller on the Famicom expansion port:

• Link no Bouken - The Legend of Zelda 2 (Japan) (FDS)
• Paperboy (Japan) (FC)
• Pinball (Japan) (FDS)
• Pinball (Europe) (NES)
• RoboCop 2 (Japan) (FC)
• Star Force (Japan) (FC)
• Terminator 2 (Japan) (FC)
• Yume Koujou - Doki Doki Panic (Japan) (FDS)