How to create a 21 bit address and separate into three bytes for Atmel serial eeprom?

[HenrikOlsson]

Hi,
That's weird.... I don't think it matters (or should matter) where you put the variable declaration. What if you put the declaration at the top but assign a value to it right before the HSEROUT (or SHIFTOUT) statement?

Are you using any aliases or any Arrays? There are no boundary checks on arrays in PBP so if you are using an array and accidently write "outside of it" you will write to variable(s) adjacent to the array.

To me it sounds as if there's something in your code that write 16 to the third byte of your LONG, is it allways 16 by the way?

/Henrik.

[BryanSw]

No, don't have any arrays at all. That is what I was thinking that somehow I was over writing memory somewhere. I gave it a few days of rest as I had other jobs at work to perform. So, probably I won't get back to it till Monday or Tuesday next week. I do have a lot of variables I use in the program which I'm trying to thin down as much as I can. Actually you know what maybe it is this string storage thing I'm doing that is causing the problem. It's posted here.
Written by Darrel Taylor

http://www.pbpgroup.com/modules/wfse...p?articleid=10

I haven't looked at it in any great detail.

I am also using an interrupt handler also written by Darrel Taylor

http://darreltaylor.com/DT_INTS-18/home.html

These could be affecting the Pic's memory somehow. Like I said I have not looked into all the code of his I use to see how it may be affecting memory. I hope not because I really need those routines. Especially the interrupt routines.