Re: My favourite timing bug
It used to be quite usual to find a 20pF capacitor on a signal...
I should have tried that*. My first big computer (OSI 8DFP?, dual 8" floppies) stopped booting. It lost the -9V power to the RAM chips. Probing the LM723 power regulator chips pins fixed it for several months. And several times. I replaced the LM723 and re-soldered some of the other close by parts. But it would fail again later.
* It would have only worked if I had remembered which pin I had just touched. I was never quite sure which pin it was. And once it started working, it would work for a long time.
Biting the hand that feeds IT
