Here it is, the multiplayer plugin for Rascalboy advance!
With this plugin you can use the link function for up to 4gba's on a single pc (netplay NOT supported) You can get the emu and plugin at my attachment.
There's only 1 problem, i have no idea how to get it to work so both players can pay...
i got bam3k, cause i heard it was working good with dolphin, but it runs too fast (~125fps), is there anything i can do to make it run less fast, cause this is prety anoying sometimes