It's a bit fuzzy and I don't think there's a single universally agreed on line. See the discussion in the "Microcode in RISC?" section of Ken's analysis of the

It's a bit fuzzy and I don't think there's a single universally agreed on line. See the discussion in the "Microcode in RISC?" section of Ken's analysis of the ARM1 at http://www.righto.com/2016/02/reverse-engineering-arm1-processors.html?m=1 http://www.righto.com/2016/02/reverse-engineering-arm1-proce... -- Ken thinks that it makes sense to think of it as microcode or perhaps hybrid/partially microcoded, but the designers of this CPU didn't think of it like that and viewed it as a non-microcoded design...