)
Call the XMS v3.0 driver "Allocate any extended memory" function with:
	AH = 89h
	EDX = Kbytes needed
Return: AX = status
	    0001h success
		DX = handle for allocated block (free with AH=0Ah) (see #02760)
	    0000h failure
		BL = status (80h,81h,A0h,A1h,A2h) (see #02775)
SeeAlso: #02759,#02771