Couple things -
now grounding the scope on pin 3 of the PDS slot for a shorter ground cable. No difference really.
The NMI switch has no effect but it does go to pin 9 on the GLUE and pin 1 of RP8... can see the voltage drop at all positions when I push the switch, it has absolutely no effect and no sound on the system.
The reset switch and circuit seems to be working at all points.
5 V rail off the power supply reads 5 V but into most chips it reads around 3.9 v . I guess that's normal?
now grounding the scope on pin 3 of the PDS slot for a shorter ground cable. No difference really.
The NMI switch has no effect but it does go to pin 9 on the GLUE and pin 1 of RP8... can see the voltage drop at all positions when I push the switch, it has absolutely no effect and no sound on the system.
The reset switch and circuit seems to be working at all points.
5 V rail off the power supply reads 5 V but into most chips it reads around 3.9 v . I guess that's normal?
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