h6. [[OS SWI Calls]] h6(. » [[OS_SerialOp]] h6((. » OS_SerialOp 10 h2. OS_SerialOp 10 h5. (SWI &57) |_<^{width:4em}. Entry | | |<^. R0 |<^. 10 | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved| |<^. R1 |<^. Pointer to device name | h4. Use The purpose of this call is to determine the name of the serial device within DeviceFS. E.g. a returned name of 'Serial' corresponds to 'Devices:$.Serial'. h4. Notes This call first became available in RISC OS 5.19. If the call is unavailable or returns an error, your code should use the default device name of 'Serial'. h4. See also * [[OS_SerialOp]]