Signaltap: discontinuty length in conditional traces

--- Quote Start ---

It might all be down to some very dodgy looking PCIe cabling.

The board doesn't plug directly into a PCIe socket, but it connected by two 'SATA' cables connected header board plugged into the PCIe socket.

--- Quote End ---

Sounds like my kind of hardware setup :) (I use PCIe to SMA breakout cables from SAMTEC)

Can you try running a transceiver toolkit test? You do not need a PRBS pattern generator at the other end, just traffic ... I'm pretty sure you can run TTK over a valid PCIe link, but I have not tried to do that.

--- Quote Start ---

And the 40 minute build times don't help the rate of debugging (on a i7 with 8GB memory running Ubuntu).

--- Quote End ---

Ha! I hear you on that one ... I script my long compiles so that I can walk away while my machine builds multiple designs ... but that does not help when debugging!

Cheers,

Dave