OSD335x-SM-RED: PRUs and RT linux compatibility

Hello,
I’m trying to get familiar with the OSDM335x-SM-RED board. I’ve run into two issues that I haven’t been able to resolve.

1) I am having trouble getting the PRU to work. I’ve tried following a guide intended for the Beaglebone Black board and ran into problems.
The example I followed can eb found on this address: http://mythopoeic.org/bbb-pru-minimal/
I got stuck at the “Enable the PRU” step. The /sys/devices/bone_capemgr.9/slots path doesn’t exist on my system. I managed to find a different path, /sys/devices/platform/bone_capemgr/slots, but I cannot write into it even with root privileges.

Could you please point me in the right direction or provide a simple example on how to get the PRUs working under the provided linux image?

2) Another problem I ran into was when using the SDK RT Linux image provided by Texas Instruments (PROCESSOR-SDK-LINUX-RT-AM335X 05_02_00_10). I couldn’t getthe ethernet port to work. I tried contacting TI’s support forum, but no solution has been found yet.

Is there an image of RT Linux that works with no problems on this board?

Thank you.