PDP11 training troubleshooting - test-drb@ccmp.vtda.org

3 Nov 1998

...
 Were you give (or allowed) a KM11 maintenance card? For
those who've not 
seen one, it's a board (acutally 2 boards...) that you stick in  special 
slot in some DEC machines. It's got 28 lights and 4 switches on it. In 
the 11/45 it'll let you single-step the microcode (or even the clock 
sequencer), display flag signals, etc. You can get the uPC on the panel, 
of course. 
I actually have one of those boards with the unibus signal overlay.
It also plugs into a connector on one of the control boards in an
RX01 drive.

					Megan Gentry
					Former RT-11 Developer

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