I’m searching an OS running on a 1st CPU (kernel + webserver + console) and able to give me 100% time on the second CPU for my scheduler (motion control + plc + communication protocol).
Dunno, but there was a post a little while back where somebody was using the IRQ on an ARM7 for the scheduler and the FIQ on the same ARM7 for precise motor control. The FIQ taking priority over the IRQ.