Re: Snark barker troubleshooting
Posted on 2022-03-10, 00:48
You might have better luck with a logic probe that can detect short pulses, rather than an analog scope. Trace the write pulse as far as you can: 1. Pin 11 of U18 (the latch) 2. Pin 9 and pin 10 of U27 3. Pin 12 of U28 (should pulse when the write port is addressed. This is driven by U8 which should …