Int 4B Fn 810C  - Virtual Dma Specification - Enable Dma Translation       [d]

   AX = 810Ch
   BX = DMA channel number
   DX = 0000h

Return: CF clear if successful
       ZF set if disable count decremented to zero
   CF set on error
       AL = error code (see #2889)

See Also: AX=810Bh