Class IORequest

sys/amiga/winfuncs.c:804–804

        ConsoleIO.io_Length = sizeof(struct Window);
        ConsoleIO.io_Message.mn_ReplyPort = CreateMsgPort();
        if (OpenDevice("console.device", -1L, (struct IORequest *) &ConsoleIO,
                       0L) != 0) {
            Abort(AG_OpenDev | AO_ConsoleDev);
        }