h6. [[OS SWI Calls]] h6(. » [[OS_Memory]] h6((. » OS_Memory 15 h2. OS_ Memory 15 h5. (SWI &68) |_<^{width:4em}. Entry | | |<^. R0 |<^. 15 (&0F), all flag bits reserved | |<^. R1 |<^. Reference key (assigned when claimed) | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | h4. Use The purpose of this call is to free an area of IO memory previously mapped in at run-time. h4. Notes The reference key is assigned when temporarily mapping in a region using [[OS_Memory 14]] or [[OS_Memory 22]]. h4. See also * [[OS_Memory]] * [[OS_Memory 14]] * [[OS_Memory 22]]