INT 83 - JM Pro Tracker v5.0 - SET DMAsee Direct Memory Access BUFFER???
	AH = 04h
	CX = number of bytes in suggested buffer
	ES:DI -> suggested buffer for DMAsee Direct Memory Access transfers???
Return: CF clear if successful
	    ES:AX -> actual buffer (filled with bytes of 80h)
	    CX = actual length (multiple of 4)
	CF set on error
	    AX = error code (see #03976)
Note:	the buffer must not cross a 64K DMAsee Direct Memory Access page boundary