# \#rcm6750 **URL:** https://forums.digi.com/tag/rcm6750/1408.md [Latest](https://forums.digi.com/latest.md) · [Categories](https://forums.digi.com/categories.md) · [Tags](https://forums.digi.com/tags.md) --- ## [RCM6750 and or Rabbit 4000 availability](https://forums.digi.com/t/rcm6750-and-or-rabbit-4000-availability/23142)
**Author:** [@petermcs](https://forums.digi.com/u/petermcs)\ **Replies:** 0\ **Last updated:** [June 30, 2022, 12:48pm UTC](https://forums.digi.com/t/rcm6750-and-or-rabbit-4000-availability/23142 "2022-06-30T12:48:58Z")
We have a couple of products based around the Rabbit processor, our older board based on the R4K and a newer board based on the RCM6750. We are having severe problems getting any supply of the RCM6750 (I found 4 parts in… --- ## [New user question about RCM6750 Serial/HDLC capabilities](https://forums.digi.com/t/new-user-question-about-rcm6750-serial-hdlc-capabilities/20774)
**Author:** [@jmusselman64](https://forums.digi.com/u/jmusselman64)\ **Replies:** 2\ **Last updated:** [September 24, 2019, 1:37pm UTC](https://forums.digi.com/t/new-user-question-about-rcm6750-serial-hdlc-capabilities/20774 "2019-09-24T13:37:44Z")
Hello Forum, I’m evaluating processors for an upcoming project, and the RCM-6750 is one I am considering. I’ve got the data sheets, DC downloaded, and looked at much of this forum; all good data, but I still have a few… --- ## [RCM6750 Backup battery drain](https://forums.digi.com/t/rcm6750-backup-battery-drain/16978)
**Author:** [@mfuhrer](https://forums.digi.com/u/mfuhrer)\ **Replies:** 5\ **Last updated:** [December 21, 2018, 7:00pm UTC](https://forums.digi.com/t/rcm6750-backup-battery-drain/16978 "2018-12-21T19:00:51Z")
Hello, I know this topic has been covered before but here’s another twist to the story: When powered down the current draw on the battery is about 42uA - which closely matches the 50uA specified in the documentation. Ho… --- ## [FAT\_SHELL.C Error: Root directory full](https://forums.digi.com/t/fat-shell-c-error-root-directory-full/18140)
**Author:** [@dilbertgod](https://forums.digi.com/u/dilbertgod)\ **Replies:** 1\ **Last updated:** [March 24, 2017, 2:50pm UTC](https://forums.digi.com/t/fat-shell-c-error-root-directory-full/18140 "2017-03-24T14:50:39Z")
I am currently developing on the RCM 6750 with an SD card attached. My goal is to mount a FAT for both the on-board SFLASH as well as the SD card at the same time. However, when running the sample program FAT\_SHELL.C, … --- ## [Port E Bit 4 is not on the PCIe connector on RCM6750.](https://forums.digi.com/t/port-e-bit-4-is-not-on-the-pcie-connector-on-rcm6750/16526)
**Author:** [@tas](https://forums.digi.com/u/tas)\ **Replies:** 3\ **Last updated:** [April 6, 2016, 6:15pm UTC](https://forums.digi.com/t/port-e-bit-4-is-not-on-the-pcie-connector-on-rcm6750/16526 "2016-04-06T18:15:26Z")
PE4 appears to be disconnected in the 6700 schematics. It does not go out to the PCIe connector like all the other Port E bits. Can it be accessed if ethernet is not required on an RCM6750 module? --- ## [RCM6750 stops responding to ethernet traffic?](https://forums.digi.com/t/rcm6750-stops-responding-to-ethernet-traffic/16517)
**Author:** [@daveoman](https://forums.digi.com/u/daveoman)\ **Replies:** 1\ **Last updated:** [April 1, 2016, 5:36pm UTC](https://forums.digi.com/t/rcm6750-stops-responding-to-ethernet-traffic/16517 "2016-04-01T17:36:03Z")
I’m using DC10.72 from the github site (10.72A). If I send an icmp flood to the unit, it stops responding to any kind of other traffic (http, telnet, icmp, etc.) In turning on the debug for the ethernet driver, a bunch … --- ## [Got error while programming my RCM6750](https://forums.digi.com/t/got-error-while-programming-my-rcm6750/16207)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 10\ **Last updated:** [March 4, 2016, 3:08pm UTC](https://forums.digi.com/t/got-error-while-programming-my-rcm6750/16207 "2016-03-04T15:08:52Z")
Hi there, I got an error message while trying to program my firmware into the RCM6750. The error message is below: “In Project Options’ Define Box, define MAX FIRMWARE BINSIZE to be substantially less than the serial bo… --- ## [Memory location view in Dynamic C for RCM6750.](https://forums.digi.com/t/memory-location-view-in-dynamic-c-for-rcm6750/14433)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 3\ **Last updated:** [February 28, 2015, 1:08am UTC](https://forums.digi.com/t/memory-location-view-in-dynamic-c-for-rcm6750/14433 "2015-02-28T01:08:13Z")
Hi guys, May I ask is there anyway we are able to view the data in a specific location in the memory of RCM6750 especially the RAM? Someone suggest me to view the .org files after compilation but it only stated the mem… --- ## [Is there 512KB battery backup external SRAM in RCM6750?](https://forums.digi.com/t/is-there-512kb-battery-backup-external-sram-in-rcm6750/14440)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 5\ **Last updated:** [February 27, 2015, 8:40am UTC](https://forums.digi.com/t/is-there-512kb-battery-backup-external-sram-in-rcm6750/14440 "2015-02-27T08:40:46Z")
Hi guys, Is there 512KB battery backup external SRAM in RCM6750? From the website - http://www.digi.com/products/wireless-wired-embedded-solutions/solutions-on-module/rabbit-minicore/rcm6700#specs, it stated there is. … --- ## [Accessing 512KB external RAM for RCM6750.](https://forums.digi.com/t/accessing-512kb-external-ram-for-rcm6750/14435)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 7\ **Last updated:** [February 27, 2015, 2:22am UTC](https://forums.digi.com/t/accessing-512kb-external-ram-for-rcm6750/14435 "2015-02-27T02:22:31Z")
Hi guys, The RCM6750 got two section of battery-backup RAM: The internal 32KB RAM and the external 512KB RAM. From the .org file that created after every compilation using Dynamic C, we can see that the battery backup … --- ## [Does RCM6750 tcpip socket port just can connect to one device only?](https://forums.digi.com/t/does-rcm6750-tcpip-socket-port-just-can-connect-to-one-device-only/13496)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 6\ **Last updated:** [November 26, 2014, 3:59am UTC](https://forums.digi.com/t/does-rcm6750-tcpip-socket-port-just-can-connect-to-one-device-only/13496 "2014-11-26T03:59:56Z")
Hi there, I’m programming my rcm6750 and I want to use it’s tcp/ip to connect to another network devices. Let say there are two network devices which is display A and display B. Now on the rcm6750, let say its ip is 19… --- ## [Memory map for RCM6750.](https://forums.digi.com/t/memory-map-for-rcm6750/13708)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 6\ **Last updated:** [October 10, 2014, 12:49pm UTC](https://forums.digi.com/t/memory-map-for-rcm6750/13708 "2014-10-10T12:49:29Z")
Hi guys, do you guys have any info for the memory map of RCM6750? I can’t find it anywhere in the user manual of RCM6750. I want something like the memory map for Rabbit 6000 which is in page 55 of Rabbit 6000 User’s Ma… --- ## [The amount of page for RCM6750 serial flash.](https://forums.digi.com/t/the-amount-of-page-for-rcm6750-serial-flash/13716)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 1\ **Last updated:** [October 9, 2014, 12:05pm UTC](https://forums.digi.com/t/the-amount-of-page-for-rcm6750-serial-flash/13716 "2014-10-09T12:05:27Z")
Hi guys, from the function user manual I found the sf\_getPageCount( const sf\_device \* dev ) function and the sf\_getPageSize( const sf\_device \* dev ) function can be use to know the page size and page count of the RCM6750… --- ## [About the RCM6750 flash memory.](https://forums.digi.com/t/about-the-rcm6750-flash-memory/13698)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 2\ **Last updated:** [October 7, 2014, 11:54pm UTC](https://forums.digi.com/t/about-the-rcm6750-flash-memory/13698 "2014-10-07T23:54:34Z")
Hi guys… I’m using the RCM6750 and there are a few function that we can use to write data to its memory. Firstly : sf\_writeRAM and sf\_readRAM, sf\_RAMToPage(a) and sf\_pageToRAM(a) Secondly: xmem2root and root2xm… --- ## [Amount of user block in RCM6750.](https://forums.digi.com/t/amount-of-user-block-in-rcm6750/13509)
**Author:** [@maniac84](https://forums.digi.com/u/maniac84)\ **Replies:** 3\ **Last updated:** [September 22, 2014, 6:50pm UTC](https://forums.digi.com/t/amount-of-user-block-in-rcm6750/13509 "2014-09-22T18:50:37Z")
Hi guys. From the RCM6750 user manual, the user block memory for it is 0-1FFF. Is there anyway to increase it? I have tested RCM2200 too but could not find the amount of user block memory stated anywhere on its user ma… --- ## [SD card physical connection to RCM6750](https://forums.digi.com/t/sd-card-physical-connection-to-rcm6750/13120)
**Author:** [@DBurghard](https://forums.digi.com/u/DBurghard)\ **Replies:** 2\ **Last updated:** [June 12, 2014, 9:05am UTC](https://forums.digi.com/t/sd-card-physical-connection-to-rcm6750/13120 "2014-06-12T09:05:34Z")
I need to add external memory for datalogging using an RCM6750. Do I need any interface chips between the card socket and the processor (like a hot-swap chip) or can it connect directly to the SPI lines? Also I’ve read…