Alternative modes of operation

[metroid-maniac]

Right now the patcher only has one mode of operation. It triggers a countdown whenever the game writes SRAM and when the countdown ends whatever is in SRAM gets flushed to a reserved portion of ROM.
It may be worthwhile to have other options. For example.

• Instead of patching write functions, patch branches to them. Then hooks can be selectively added with the assistance of a debugger, removing unnecessary flushes at inconvenient times. Or the patched write function could examine the return address to determine where it was called from and decide what to do.
• Only trigger countdown if a key combo is held during the saving operation.
• Instead of a countdown, use a key combo to decide when to flush.
  • Adventurously, it might even be possible to add save state or sleep support using a key combo.
• Emulate larger save types such as FLASH1M on smaller physical save chips like 64KB SRAM by copying the matching bank into SRAM when needed..
• Maybe don't even need SRAM at all and use a log of all writes, something like this