# Determine complete memory map

**URL:** <https://discuss.px4.io/t/determine-complete-memory-map/1356>\
**Category:** Uncategorized\
**Created:** [October 1, 2016, 3:15pm UTC](https://discuss.px4.io/t/determine-complete-memory-map/1356 "2016-10-01T15:15:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![seth](https://discuss.px4.io/user_avatar/discuss.px4.io/seth/32/465_2.png) [@seth](https://discuss.px4.io/u/seth)\
**Post date:** [October 1, 2016, 3:15pm UTC](https://discuss.px4.io/t/determine-complete-memory-map/1356/1 "2016-10-01T15:15:20Z")

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how do i determine how much room there is in the flashed image for additions? I can see the ram status with top and free in nsh - but cant seem to find out how much of the flashed ram is used/available.

thx

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**Author:** ![Bart](https://discuss.px4.io/letter_avatar_proxy/v4/letter/b/f19dbf/32.png) [@Bart](https://discuss.px4.io/u/Bart)\
**Post date:** [October 2, 2016, 2:12pm UTC](https://discuss.px4.io/t/determine-complete-memory-map/1356/2 "2016-10-02T14:12:43Z")

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Depends on the platform, but for nuttx you can check the size of firmware\_nuttx.bin in the build directory src/firmware/nuttx.