On Wed, May 30, 2018 at 10:48 AM, Paul Koning via cctalk < cctalk at classiccmp.org> wrote: > Didn't the 780 get its microcode loaded by the console LSI-11? Only the small microcode patch store was loaded. Most of the 11/780 microcode was in bipolar PROMs. The later 11/785 had all of the microcode in RAM loaded by the LSI-11.