3 Aug
2011
3 Aug
'11
1:14 p.m.
The "Run" LED is always lit. The manual
states that examine and deposit
commands are only possible when the processor is in halt state. But
I don't have the prints in front of me, but is that a possible starting
point? I ssume there's a signal from the CPU to the console controller to
indicate that the CPU is running. With hte CPU removed, does this float
in the 'halted' state? (I assume it does, if the manual suggests resting
the thing without the CPU boards fitted). Maybe you can check this, and
check the input circuitry for this signal on the console controller
-tony