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