Now I am working on a PIC firmware using 12F629. I am using
the internal comparators and the internal comparator
reference. There are a bug that under certain conditions,
the CMIF flag will stay at 1 even though it should be 0.

After some time of manual debugging using a debugging pin,
I decide to use ICD2 with the debug header.

When running continuously using ICD2, I can repeat the bug. 
Once I halt the processor, I know that CMIF flag is still 1.
Then I let the processor run again, the CMIF flag is correctly 
changed to 0 and stay at 0 and I can not repeat the bug any
more. That is very strange.

The same thing happen when I set a break point, once the
program halt, the bug is gone. Very very strange.

What could cause the problem? Thanks in advance.

Regards,
Xiaofan
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist