Implement MUL
Implement MUL

sergiobenrocha2/mgba,AdmiralCurtiss/mgba,fr500/mgba,sergiobenrocha2/mgba,Anty-Lemon/mgba,mgba-emu/mgba,askotx/mgba,Anty-Lemon/mgba,zerofalcon/mgba,libretro/mgba,nattthebear/mgba,Iniquitatis/mgba,askotx/mgba,zerofalcon/mgba,sergiobenrocha2/mgba,matthewbauer/mgba,AdmiralCurtiss/mgba,fr500/mgba,mgba-emu/mgba,libretro/mgba,cassos/mgba,Touched/mgba,matthewbauer/mgba,MerryMage/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,iracigt/mgba,Iniquitatis/mgba,libretro/mgba,cassos/mgba,Touched/mgba,mgba-emu/mgba,Touched/mgba,askotx/mgba,libretro/mgba,jeremyherbert/mgba,iracigt/mgba,askotx/mgba,fr500/mgba,mgba-emu/mgba,bentley/mgba,Iniquitatis/mgba,jeremyherbert/mgba,iracigt/mgba,MerryMage/mgba,sergiobenrocha2/mgba,libretro/mgba,fr500/mgba,AdmiralCurtiss/mgba,iracigt/mgba,cassos/mgba,MerryMage/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,zerofalcon/mgba,Iniquitatis/mgba,bentley/mgba,nattthebear/mgba,sergiobenrocha2/mgba