h6. [[OS SWI Calls]] h6(. » [[OS_UpCall]] h6((. » OS_UpCall 11 h2. OS_UpCall 11 h5. (SWI &33) |_<^{width:4em}. Entry | | |<^. R0 |<^. 11 (&0B)| |<^. R1 |<^. Device driver's handle | |<^. R2 |<^. 0 if closed for reception (else code for transmission)| |<^. R3 |<^. File handle for stream | |<^. R4 |<^. [[DeviceFS]] stream handle, as passed to device driver on initialisation | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | |<^. R2 |<^. Preserved | |<^. R3 |<^. Preserved | |<^. R4 |<^. Preserved | h4. Use The purpose of this call is to inform your application that a stream has been closed. h4. Notes [[DeviceFS]] issued this call when a stream is closed. It serves as a broadcast, and all registers should be preserved. This call is never issued under RISC OS 2. h4. See also * [[DeviceFS]] * [[OS_UpCall]]