External Status LEDs - make them more meaningful

[bunnie]

The external status LEDs could do a lot more. At the moment, the only status it gives is green blinking to indicate FPGA boot and a green PLL lock status. Link quality status could be red, for example, on the incoming Rx port.

And maybe instead of a hard blink a softer PWM-style blink could be used.

[Lanthade]

What does the blinking green light on the output port mean while the system is up and properly running?

[bunnie]

That is correct, it means the FPGA has booted and loaded a bitstream. It doesn't relay status about the actual state of the cable itself, which is admittedly a bit of a UX problem.