Comment by rbanffy

> I miss doing firmware engineering.

I remember my Apple II days (different platform, similarly constrained environment) where every game had a hard real-time multitasking core under all the code. In the Apple II it was particularly critical, because you didn't have programmable sound generators - you had to programmatically change the voltage of the speaker. If you were really crazy, you could do PWM and expect the electronics of the board would coerce your output square wave into something pleasant.

It never worked well, but it was still super cool.