Mockingboard or Phasor cards can be inserted into any slot. Change Config->Sound to that slots 4+5 to be individually selected for the 3 soundcard types. Add MockingboardCardManager class to manage multiple cards and mix the sound buffers.
Fix ASSERT from previous commit as SY6522.Reset() needs CriticalSection.
NB. Update CpuInitialize() & CriticalSection creation: . call CpuInitialize() on WM_CREATE to create CriticalSection . needed as MB_Initialize() needs CriticalSection
TomCh