Darrel,

Thanks again,

The N-Bit Troubleshooter program is working well now with the change you suggested.

It's seems pretty obvious now that I am aware of it.

So now I'll try to integrate it into my current program which is a two gate optical timer and speed calculator.

My next challenge is figuring out how to make use the 64-bit output

I'll post details when it's cleaned up and N-Bit math is integrated.

Wozzy-2010