you could also have the console on our own machine with 1+GHz that passes code to the embedded box to execute, or one of a million other variations on this theme. but nooo we gotta LARP about how well we support legacy systems which is why are systems are so broken after doing this for 50 years. oh yeah and embedded is dead, it's just high end boxes with ubuntu on them now. and last but not least i hope to god i never have unix on something that actually needs to be embedded for all of performance, stability and security reasons.