Int 67H [EMS 4.0] Function 5BH (91) Subfunction 08H Deallocate DMA register set

Deallocates a DMA register set that was previously allocated with Int 67H Function 5BH Subfunction 05H.

Call with:

AH = 5BH

AL = 08H

BL = DMA register set number

Returns:

If function successful

AH = 00H

If function unsuccessful

AH = error code

Note:

This function is intended for use by operating systems only and can be disabled by the operating system at any time.