h6. [[OS SWI Calls]] h6(. » [[OS_SynchroniseCodeAreas]] h6((. » Flags h2. Flags |_<^{width:4em}. Bit |_<^{width:4em}. Value|_<^. Meaning | |/2<^. 0 |<^. 0|<^. Entire address space to be synchronised[1] | |<^. 1 |<^. Address range to be synchronised | |<^. 2 – 31|<^. |<^. Reserved, must be zero| h4. Use The purpose of this call is to ensure that the code cache is up to date with memory. h4. Notes R1 & R2 on entry are only used if bit 0 of R0 is set. fn1. On RISC OS 5.25 and later, this may only clean application space and the RMA. h4. See also * [[OS_SynchroniseCodeAreas]]