Int 94  u - Media Vision PCm.com - Get/set Internal Dma Buffer             [s]

   SI = 8015h
   ES:BX -> DMA info structure (see below)

Return: ???

Format of DMA info structure:
Offset Size    Description
 00h   DWORD   -> DMA buffer (offset FFFFh = return current buffer info)
 04h   WORD    DMA buffer size
 06h   WORD    divisions