06-19-2015, 02:52 PM
![[Image: dTxHiq0.png]](http://i.imgur.com/dTxHiq0.png)
The pink line that goes in to the third comparator on the blue section is the OR control line.
That comparator when not disabled floods the xor output with an OR signal instead. It does not matter that the XOR is still active, as the only time that an XOR is on is also a time when the OR line is on.