pdp8/e Problems: KE8-E EAE debugging

[Charles H. Dickman]

Tony Duell wrote:

>>This not gonna be easy to fix. The over-the-top connectors prevent the 
>>use of an extender card, so I can't probe anything easily.
>>    
>>
>
>A general comment. When I don't have the right extender, or in cases like 
>this when you can't use one, what I generally do is solder some wires to 
>useful points on the board, put the board back in, and probe the free 
>ends of the wires. Don't try this on fast stuff, but for the 8/e it 
>should be fine.
>  
>
I thought of that... Just don't relish the idea... You do what you gotta 
do though.

>-tony
>
>  
>
I did some tests with the various EAE instructions and it seems that 
when the main timing generator is stopped, either the EAE timing 
generator does not start or it does not restart the main timing 
generator. Any instruction that hands off control seems to hang the 
processor.

-chuck