[Libre-soc-bugs] [Bug 517] Define JTAG pins and set up with litex for ulx3s85f

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=517

--- Comment #106 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Jacob Lifshay from comment #104)
> (In reply to Cole Poirier from comment #103)
> > Ok so no VCC but yes GND?
> 
> yes. you nearly always need gnd for a return path for the current. if you
> don't have a return path right near the signal lines, it will totally mess
> up high speed signals, due to the extra inductance caused by the loop
> through the signal and off to a ground somewhere.

Thanks for your help Jacob!

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