Check within a 16 bytes window

[Ioannis]

Here is the problem.

I have a counter that is 16 bits wide. Also another 16 bits counter.

I need to check if the distance between them is no more that 16 bytes.

The tricky part is where the one is near the roll over and the other has already rolled.

For example one counter is at FFFC and the other is at 0003.

Any ideas?
Ioannis

[Darrel Taylor]

IF ABS(count1 - count2) > 16 THEN ...

[Ioannis]

Every time I get an answer by Darrel, I feel I have to hide somewhere... Embarassed.

Thanks Darrel.
Ioannis

[Darrel Taylor]

Well, don't feel too bad, cause I'm not even sure that will work under all conditions.

I should do some testing.

[Darrel Taylor]

After some testing ... it does work.

Now I want to hide.

[Ioannis]

I just did not think in terms of pure binary maths. So trying to find a way with 10 base mind was driving me away from the clear solution you gave.

Thanks again.
Ioannis