@Ken_Shirriff on the real-time capabilities of the @Texas_Instruments Sitara AM3358 SoC in the BeagleBone and PocketBeagle:
“Depends on the application. I’m using the PRU to bit-bang the Xerox Alto’s 3Mb/s Ethernet protocol, while running Xerox PARC server software on the ARM. Can’t do that with an Arduino”