daver2
10k Member
Ok,
So /RESET (pin 40) is OK.
The clocks are all OK (pins 3, 37 and 39).
The /NMI and /IRQ pins are both HIGH - so OK.
But the CPU is either not executing instructions; or starts executing instructions and then stops.
So, next step?
Dave
So /RESET (pin 40) is OK.
The clocks are all OK (pins 3, 37 and 39).
The /NMI and /IRQ pins are both HIGH - so OK.
But the CPU is either not executing instructions; or starts executing instructions and then stops.
So, next step?
Dave