h6. [[OS SWI Calls]] h6(. » [[OS_FSControl]] h6((. » OS_FSControl 0 h2. OS_ FSControl 0 h5. (SWI &29) |_<^{width:3em}. Entry | | |<^. R0 |<^. 0 (reason code) | |<^. R1 |<^. Pointer to wildcarded filename | |_<^{width:3em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | h4. Use The purpose of this call is set the current directory and filing systems. h4. Notes If a pointer to "" is used, the directory is set to the User Root Directory (URD). To unset the CSD use [[OS_FSControl 43]]. h4. See also * [[OS_FSControl]] * [[OS_FSControl 43]]