[mluckham]

If your 'done' variable was changing by itself, then perhaps the gyro call is assigning a variable of the wrong type ... if that variable is immediately adjacent in memory to the 'done' variable, the overflow would affect it.

This normally wouldn't be possible with a compiler like EasyC, which doesn't use pointers (well, it doesn't let US use pointers).

Please post the exact code - C code preferrably.

Mike

BTW - PSEUDO-CODE, not SUDO (but probably you know that)