I always thought Action! was very crisply tailored to these small systems. It turns out to have been a port of a language called Micro-SPL from the Xerox Alto

I always thought Action! was very crisply tailored to these small systems. It turns out to have been a port of a language called Micro-SPL from the Xerox Alto that (originally) targeted the Alto microcode directly. Atalan and Plasma look nice.