Game Gear multiplayer support?

[Oggom]

Would it be possible to emulate two linked Game Gear units side by side for multiplayer purposes?

[ekeeke]

The emulator code is not really object-oriented, therefore it's not much designed to concurently run several instances of Z80 CPU, VDP, etc...

Unless the way the emulator is coded is entirely (or quite) redesigned, it could eventually be hacked around doing something more or less like this:

load state 1 -> run emulator for one frame -> save state 1 ->
load state 2 -> run emulator for one frame -> save state 2 ->
load state 1 -> etc...

but this would be quite unefficient and maybe also not very compatible, depending on how frequently games need to sync between themselves (usually once per frame but that's not guaranteed)

[ekeeke]

Game Gear link cable and parallel port registers would also need to be fully emulated, which is not the case actually.