> I really liked ThreadX when I was working with it a while ago. Calling it an "operating system" is charitable in the sense that it's an interrupt service rout

> I really liked ThreadX when I was working with it a while ago. Calling it an "operating system" is charitable in the sense that it's an interrupt service routine and a bunch of functions to handle 'creating threads' and managing memory allocations. Yes, that's called an RTOS.