Constantsยง
- ONCE_0
 - Count repeatedly.
 - ONCE_1
 - Count until compare and then stop. If counting up, a successful compare occurs when the counter reaches a COMP1 value. If counting down, a successful compare occurs when the counter reaches a COMP2 value. When output mode $4 is used, the counter re-initializes after reaching the COMP1 value, continues to count to the COMP2 value, and then stops.