If the signal on any of these three paths changes at the same time as the capturing edge of the destination flip flop’s clock, there is a small chance that the output of that register may become meta-stable, meaning it may go to a state between an ideal “one” and an ideal “...
The following color scheme differentiates the meaning of the format for each line. Below is an example of how the first line is interpreted: In order to evaluate the checksum of each hex line, every byte in the line is summed together, and the two's complement is taken from the sum. ...