Int 15 Fn CF  - Later Ps/2s - Deallocate Dma Arbitration Level             [B]

   AH = CFh
   BL = arbitration level to be deallocated (see AH=CEh)

Return: CF set on error
       AH = status (80h,86h = function not supported)
   CF clear on success
       AH = status
       00h success
       04h arbitration level not allocated

See Also: AH=CEh