[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 #18 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Cole Poirier from comment #17)

> I can't read schematics, can you? Or do I contact the ulx3s developer?

yeah you can, don't give yourself gip :)  hint: follow the wires.  or, in the
case of KiCAD, follow the labels (boxes with an arrow at the end).

really we want the single-ended (non-differential-pair) 

> I thought it could be answerd using just the schematics file... can you take
> a look at the gpio section of the constraints file which I have linked at
> the top of this comment?

nooo: you can do it :) by tracking the names like "GP-GN 0-7" such as GP0 on
page 2 area B1

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