Int 2F Fn BC01  - Mediavision Mvsound.sys - Get Version                    [s]

   AX = BC01h
   BX = 6D20h ('m ')
   CX = 2076h (' v')
   DX = 2020h ('  ')

Return: BX = ASCII major version (leading zeros significant)
   CX = ASCII minor version (leading zeros significant)