Thanks. I will look again for the value.

Because it kept asking me if I wanted to use the value at that address I figured there has to be something there even if I couldn't see it. I assume when using IC-Prog that you can see it? Perhaps I'm not looking in the correct spot.

If I did manage to erase it it is no big deal as this chip has just been my "test" chip. When I start building my project I'll program a fresh chip and won't be erasing and re-programming it over and over.

Thanks for the assembler code. I'll include it in the program.

Bart