# \#bbram

**URL:** https://forums.digi.com/tag/bbram/2856.md

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## [xalloc (bbram) not working on rcm6600w](https://forums.digi.com/t/xalloc-bbram-not-working-on-rcm6600w/19306)

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**Author:** [@pvecchio](https://forums.digi.com/u/pvecchio)\
**Replies:** 4\
**Last updated:** [March 28, 2018, 8:07pm UTC](https://forums.digi.com/t/xalloc-bbram-not-working-on-rcm6600w/19306 "2018-03-28T20:07:54Z")

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Hello, I’ve been using rabbit 5600w and now i want to reuse the same code with 6600w and 6650w. So far now, 6650w it’s working fine but 6600w throw a runtime error: Run time error: “Xmem allocation failed (out of memo…

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## [bbram Battery back Up RAM  RCM6600W](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884)

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**Author:** [@chuckllx](https://forums.digi.com/u/chuckllx)\
**Replies:** 2\
**Last updated:** [January 12, 2017, 4:19pm UTC](https://forums.digi.com/t/bbram-battery-back-up-ram-rcm6600w/17884 "2017-01-12T16:19:22Z")

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can the RCM6600W utilize the ‘bbram’ for variables ? ie. bbram unsigned int data1; and keep this intact after power is cycled ?

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## [Stored in SRAM RCM6700](https://forums.digi.com/t/stored-in-sram-rcm6700/16987)

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**Author:** [@jleon](https://forums.digi.com/u/jleon)\
**Replies:** 4\
**Last updated:** [June 29, 2016, 8:08am UTC](https://forums.digi.com/t/stored-in-sram-rcm6700/16987 "2016-06-29T08:08:53Z")

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I am using the Development Kit Rabbit RCM6700. I have a variable in the code to be stored in the SRAM. I declare: #class auto #memmap xmem … bbram typeStruct myStruct; … But the compiler takes me an error: “out of …

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## [Can battery-backed RAM be increased on the BL2600 SBC?](https://forums.digi.com/t/can-battery-backed-ram-be-increased-on-the-bl2600-sbc/16764)

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**Author:** [@mutantworm](https://forums.digi.com/u/mutantworm)\
**Replies:** 1\
**Last updated:** [May 25, 2016, 5:21pm UTC](https://forums.digi.com/t/can-battery-backed-ram-be-increased-on-the-bl2600-sbc/16764 "2016-05-25T17:21:56Z")

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I need more bbram space for a project I am working on. In the StdBios.c file there is: #define BBROOTDATASIZE 0x1000 Can that be changed to: #define BBROOTDATASIZE 0x2000 Would this cause memory problems? Thank…