h6. [[OS SWI Calls]] h6(. » [[OS_Args]] h6((. » [[OS_Args 9]] h6(((. » [[IOCtl Parameter Block]] h6((((. » IOCtl Reason Codes h3. IOCtl Group Code = 0 Reason Codes. Data width 4 bytes unless noted otherwise. table((. |_<^{width:3em}. Reason |_<^. Description | |<^. 1|<^. Set/read baud rate | |<^. 2|<^. Set/read data format| |<^. 3|<^. Set/read handshaking| |<^. 4|<^. Set/read buffer rate | |<^. 5|<^. Set/read buffer thresholds | |<^. 6|<^. Set/read control lines | |<^. 7|<^. Set/read FIFO trigger level | |<^. 8|<^. Read number of supported baud rates | |<^. 9|<^. Read baud rate index data | h3. IOCtl Group Code = 0xff Reason Codes - FS specific. Data width 4 bytes unless noted otherwise. h4. DeviceFS Reason codes table(bordered){width:auto}. |_. Reason|_. Description|_. Data value|_. Notes| |1|Set/Read Non-blocking I/O|1 = set 0 = unset|| |4|Set/Read Sleeping I/O|1 = set 0 = unset|For use in task windows. Calls UpCall 6.| |5|Set/Read Sleeping I/O Timeout|0 = no timeout timeout in cs|| h3. See also * [[DeviceFS]] * [[IOCtl Parameter Block]] * [[OS_Args]] * [[OS_Args 9]]