Is that CONF? I’ll take a look today. I don’t think the screenshot posted.I have attached a screen capture above. It is the same signals as the two 74175. Inputs to the ROM is the output of the MPC. The outputs of the ROMs are the inputs of the MPC.
Edit: Going off of drawing CONF, for E101 pin 12 (MPC06) is at 0.33 volts. Pins 5,4,13 (MPC 07, 05, 04) read 3.30 volts
For E111, the MPC 0,1,2,3 inputs read 3.30 volts
Using the KM, holding down the M Clk switch produces a clock signal on pin 9 for E101 and E111. When the switch is released, there is a steady 3.60 volt signal present. I noticed that the M Clk pulse switch only works when the M Clk Enable switch is flipped opposite the arrow on the KM-1 overlay.