h6. [[OS SWI Calls]] h6(. » OS_LeaveOS h2. OS_LeaveOS h5. (SWI &7C) |_<^{width:4em}. Entry | | |<^. - |<^. - | |_<^{width:4em}. Exit | | |<^. - |<^. - | h4. Use The purpose of this call is to set the processor to User mode. h4. Notes Interrupt and Fast Interrupt status is unaltered. The advantage of this call is that it will cause callbacks to occur which can massively improve applications where only a quick bit of work is required in supervisor mode, yet it may be some time before any callbacks are triggered. This SWI was introduced with RISC OS 5.00. For older machines, the [[CallASWI]] module (version 0.10) provides an implementation of the SWI. See also [[OS_EnterOS]]. h4. See also * [[OS_EnterOS]]