) Call the XMS driver "Allocate extended memory block" function with: AH = 09h DX = Kbytes needed Return: AX = status 0001h success DX = handle for memory block 0000h failure BL = error code (80h,81h,A0h) (see #02775) SeeAlso: #02758,#02761,#02764,#02765,#02766,#02772