Maybe you can go check TI hercules series. I couldn't find a multicore one but I...

kbumsik on June 20, 2017 | parent | context | favorite | on: GERT: Run Go on Bare Metal ARMv7

Maybe you can go check TI hercules series. I couldn't find a multicore one but I found it cheapest possible Cortex R board. http://www.ti.com/lsds/ti/microcontrollers-16-bit-32-bit/c20...