I'm using an 'HC908JK3 in a noisy automotive ignition environment. Have several variations on a theme over half a dozen different boards, the relevant code being virtually identical except for I/O differences to help board layout. One board in particular has a habit of acting up for some customers although I have not been able to reproduce it on the bench. My recent post regarding what to do with unbonded input pins was a big help in getting on top of this problem, so thanks to all that helped.
Anyway, my code uses no interrupts so I want to put a trap in the vector area so if a spurious interrupt does occur it can recover gracefully. What is the best way of doing this? I have all interrupts disabled but I want to go both belt and braces.
"START" is the very top of the listing, the reset vector.