Stopped A2000 Clock
31-Oct-91 02:39:54
Sb: #15887-Stopped A2000 Clock
Fm: Don Curtis/SYSOP 76703,4321
To: Don Sakers 72517,526
Don,
Humm…one of several things. The tick signal is normally supplied
by the power supply (it's simply a low voltage 60Hz signal derived from the
power line frequency). There's a jumper inside where you can switch it to
get the tick signal from the video vertical signal.
IF that doesn't work (and to be honest…I doubt it will), then
your timer chip (one of the 8520's) is more than likely shot.
If that does work…then you've got a problem with your power
supply.
Don