Int 67H [EMS 4.0] Function 5BH (91) Subfunction 05H Allocate DMA register set

Allocates a DMA register set.

Call with:

AH = 5BH

AL = 05H

Returns:

If function successful

AH = 00H

BL = DMA register set number (0 = none available)

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.