h6. [[OS_DynamicArea]] h6(. » OS_DynamicArea 5 h2. OS_DynamicArea 5 h5. (SWI &66) |_<^{width:3em}. Entry | | |<^. R0 |<^. 5 (reason code) | |<^. R1 |<^. Number of single [[Shrinkable Dynamic Areas|shrinkable]] areas to exclude from sum, or -1 to include all shrinkable areas | |_<^{width:3em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | |<^. R2 |<^. Total amount of free space (bytes) | h4. Use The purpose of this call is to return the total free space, in bytes. The returned value will be clamped at 2GB-PageSize in order to try and avoid any issues relating to signed number overflow. To avoid this clamping, use [[OS_DynamicArea 27]]. h4. See also * [[OS_DynamicArea]] * [[OS_DynamicArea 27]] * [[Shrinkable Dynamic Areas]]