8 bit trigger for your scope or logic analyzer

Some times I need to confirm a pattern is present on the output of the 328/1284 or shift register.
Using a circuit similar to this, you can enter a pattern on the DIP switch and monitor A=B output with your scope trigger i/p.
With a logic analyzer, it frees up 7 inputs for other things.

Gee I haven't seen a '688 in use for about 20 (make that 30) years. :)

Good idea though if the inputs needed for triggering do not need to be traced as well.


20 (make that 30) years

I guess I am dating myself.

Me to :)