The gameshark and other cheat units:
GameBooster 64 (V1.1) (NTSC) (Unl)
GameBooster 64 (V1.1) (PAL) (Unl)
GameShark V2.0 (Unl)
GameShark V3.3 (Unl) [!]
Pro Action Replay 64 (V3.3) (Unl)
Pro Action Replay 64 V3.0 (Unl)
these are just dumps of the cheats and such on the cart..
there is no way to emulate it and would be pointless anyway since we have gents and eagle =)