You got me as to why this is considered remotely acceptable. This being said, you sort-of need a stack for a context switch ( or possibly an ISR ) in many RTOS

You got me as to why this is considered remotely acceptable. This being said, you sort-of need a stack for a context switch ( or possibly an ISR ) in many RTOS offerings. This also being said, I've had engineers react rather violently to the very concept of FSMs. I can't say why that is.