http://www.picbasic.co.uk/forum/showthread.php?t=7814
Just found the thread where the guy is building ignition coil driver. His PIC resets (intermittently) when coil is fired. PIC doesn’t reset if uses resistive type high tension lead which is suppressing the amplitude of the interference. Would we very nice to shine some light on unexpected reset and how to protect PIC from resetting. I am sure that many people came across the problem. If they could share their experience it would be of a great help.