INT 6F - 10-NET v3.3 - GET REMOTE MEMORY
        AH = 14h
        BX:SI = address of remote memory
        CX = length (<=1024 bytes)
        DS:DX -> node ID, 12 bytes blank-padded
        DS:DI -> area to receive remote memory image
Return: CF set on error
            AX = error code (see AH=00h)
        CF clear if successful
            CX = amount of memory copied to DS:SI