What I need now is to borrow or buy an M9058 to test
with, and ideally a
qbus extender so I can use an oscilloscope to work out which component is
All the M9058 is getting from the box is power - you can easily remove it from
the chassis, supply power directly from an external supply (solder temporary
feed leads above the board fingers if you don't have the right connector). Makes
testing a lot easier.