On Tue, Nov 29, 2016 at 12:50 PM, Noel Chiappa <j...@mercury.lcs.mit.edu> wrote:
> > From: William Degnan > > > hit LOAD ADDR > > address light 16 comes on, RUN/PROC/BUS/CONSOLE lights stay on. > > According to the KD11-A manual (pg. 3-2) the address lights on the console > are driven directly from the CPU's Bus Address Register. So you've got an > issue there. > Thanks for finding that for me. > > > If I hit START light 16 turns off. > > So it's not wedged on in the CPU. Maybe a console switch issue, then? > > A DC LO has crept up, I can't take this any further until I fix that issue. Not sure if it's the M7231 or a power supply component yet. I am about ready to throw this thing out the window :-) .... if it would fit. The problem with address 16 may have been related to the failure that ultimately lead to the DC LO (-0.22 V) value. It wasn't an issue until yesterday afternoon. b
