On Fri, 2007-12-07 at 12:59 -0500, James Knott wrote:
> >
> The Data General Eclipse line had a feature called "Writable Control
> Store", which could be used to add custom instructions to the CPU.  The
> VAX 11/780 had it's microcode loaded from floppy at boot, but I don't
> recall if it was changeable in the same manner as the Eclipse WCS.
> 

Floppy?
It was a real huge 8" flop ... (still have them here)

hw
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