Hi!
I once again tried to get my PDP-8/L to run this weekend. Unfortunately
I am not not yet a PDP professional - I don't have a clue what most of
the modules are doing. I started to read the Maintenance Manuals but I
do not quite know where to start. Maybe you can give me a hint:
I tried the "simpler" instructions like set accumulator, or accumulator
with switch reg. etc.
What I did not yet try are the different jump instructions. I will be
more specific as soon as I tried more instructions.
CLA and STA work, i can set all bits in AC. IAC (increment) and all the
rotate instructions however always set AC to 1 completely ignoring the
previous value.
Where should I start looking for the problem? What information do I have
to gather to narrow down the source of the problem?
Regards,
Sebastian