20 Sep
2001
20 Sep
'01
11:23 p.m.
Actually much
of the 11/780 microcode is in rom.
The stuff loaded from RX01 is mostly bug fixes to the rom code.
The patches went into the Writeable Control Store board.
The 11/785 went to completely RAM loaded microcode.
The 11/780 did have an optional second User Writeable Control Store
board.
What about the 11/730? I remember seeing a fair amount of fast-ish RAM on
the CPU boards (which I took to be a writeable control store) but not
that much PROM.
-tony