Optional Genesis BIOS - What do they actually "do"?

Libretro Cores
#1

GenesisPlus GX core

  • sk.bin (Sonic & Knuckles ROM)
  • sk2chip.bin (Sonic & Knuckles UPMEM ROM)
  • areplay.bin (Action Replay ROM)
  • ggenie.bin (Game Genie ROM)

Ok, so clearly it’s easy to see what these ARE. The sk ones are related to lock-on features, and the other 2 are cheat devices…

But what’s the actual USE?

I mean, we have the Sonic 1/2/3 +S&K roms as games, and cheats work directly through the emulator…

So what do these actually DO? Like what’s the benefit of having them?

#3

So then what would be the difference between the 2 lock on bios? or are both of them necessary for that function?

And how would you start the ‘system’ so it loads the game genie followed by the games with the codes?

#5

Thanks! That’s pretty badass. Wish we could get that for the NES - I’m pretty sure I still have my cheatbook somewhere… haha.

Anyway I’m gonna get that setup for the hell of it - I just wasn’t sure there was much point in me tracking down the BIOS for it.

1 Like
#6

Where exactly would you find these? Do I need to dump the roms myself?

#7

There is a way to enter Game Genie Codes for NES games afaik.

#8

That is the legally preferred method.

This was almost 6 years ago, so It’s likely more options are available now. At the time though I wasn’t aware of a core option to allow GG code entry via the original interface of the cartridge - most cores/emulators have some kind of GG code entry, but I was referring more to the experience.