h6. [[WindowManager]] h6(. » [[WindowManager Messages|Messages]] h6((. » [[Message Codes|Message Codes]] h6(((. » [[Message_DeviceClaim]] h6((((. » Device Numbers h2. Device Numbers |_<^. Device|_<^. Specificics|_<^. Major|_<^. Minor| |<^. Parallel Port|<^. |<^. 1|<^. 0| |<^. Serial Port|<^. |<^. 2|<^. 0| |<^. Screen Palette|<^. |<^. 3|<^. 0| |<^. MIDI interface|<^. All ports|<^. 4|<^. -1| |<^. MIDI interface|<^. Specific port|<^. 4|<^. 0-3| |<^. Floppy Discs|<^. All Floppy drives|<^. 5|<^. -1| |<^. Floppy Discs|<^. Specific drive|<^. 5|<^. 0-3| |<^. User Port|<^. Specific port|<^. 6|<^. 0-255| |<^. Sound System|<^. Whole sound system|<^. 7|<^. 0| h4. Notes These are the device numbers used with [[Message_DeviceClaim]] h6. Controlling sources: "Hdr:Devices":https://gitlab.riscosopen.org/RiscOS/Sources/Programmer/HdrSrc/-/blob/master/hdr/Devices managed by the "allocations manager":/content/allocate h4. See also * [[Message_DeviceClaim]]