OPLL: 91%

GUI improvements
soon I gotta allocate macros for the YMU759 params

TODO:
- FM macros
- drums mode
- muting

src/engine/dispatchContainer.cpp

@@ -199,6 +199,7 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
     case DIV_SYSTEM_VRC7:
       dispatch=new DivPlatformOPLL;
       ((DivPlatformOPLL*)dispatch)->setVRC7(sys==DIV_SYSTEM_VRC7);
+      ((DivPlatformOPLL*)dispatch)->setProperDrums(sys==DIV_SYSTEM_OPLL_DRUMS);
       break;
     case DIV_SYSTEM_SAA1099: {
       int saaCore=eng->getConfInt("saaCore",0);