# what‘s the Structure of memory？

**URL:** <https://forum.deltamotion.com/t/what-s-the-structure-of-memory/289>\
**Category:** RMCTools\
**Created:** [February 27, 2014, 8:12am UTC](https://forum.deltamotion.com/t/what-s-the-structure-of-memory/289 "2014-02-27T08:12:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mars\_bruce\_lee](https://forum.deltamotion.com/letter_avatar_proxy/v4/letter/m/a587f6/32.png) [@mars\_bruce\_lee](https://forum.deltamotion.com/u/mars_bruce_lee)\
**Post date:** [February 27, 2014, 8:12am UTC](https://forum.deltamotion.com/t/what-s-the-structure-of-memory/289/1 "2014-02-27T08:12:17Z")

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what‘s the Structure of memory？It includes flash and NVRAM and else？

When the program runs，it runs in NVRAM？

I notice that in the manual ,it reference “the precedence on boot-up is (1) NVRAM, (2) Flash, (3) zero.”

What’ the meaning of zero?

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**Author:** ![Jacob\_Paso](https://forum.deltamotion.com/letter_avatar_proxy/v4/letter/j/439d5e/32.png) [@Jacob\_Paso](https://forum.deltamotion.com/u/Jacob_Paso)\
**Post date:** [February 28, 2014, 10:29pm UTC](https://forum.deltamotion.com/t/what-s-the-structure-of-memory/289/2 "2014-02-28T22:29:26Z")

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That explanation applies only to the variables. The preceding sentence explains it. See end of topic: [http://deltamotion.com/support/webhelp/rmctools/Programming/Variables/Variables.htm](http://deltamotion.com/support/webhelp/rmctools/Programming/Variables/Variables.htm)

For the RMC memory, the program is in RAM. It is stored in Flash. When the RMC starts, the Flash memory is copied to RAM.