Jon Elson wrote: > I'm not sure the original DEC PDP-10 (KA-10) used microcode, but the > KI-10 did. As far as I understand, the PDP-6 (type 166), KA10, and KI10 were hardwired. KL10 and KS10 were microcoded. The Foonly F1 preceeded and influenced the KL10 design.