Homebrew Memory Patcher?

[Gattman01]

Hello,
Does a homebrew memory patcher exist?
If not, it sounds like it might be fun to try. I'm just not sure where to start.

There isn't really a way to "fork", then have one process keep updating the memory while the other loads program/game?

So then what about using an IRX?
The IOP gets reset when the game initializes, right? This would remove any IRXs that had been loaded, right?

Does anyone know how the GameShark gets it job done?
I lost my card a couple years back, but I still have the CD. I'll poke around with it when I get home from work.

Thanks,
Mike

[Drakonite]

We don't hack official games here, including "memory patchers" aka CHEAT DEVICES.