18:03 <somlo> daveshah: `make prog` in TrellisBoard/gateware/simple gets me a spinning multicolored LED "snake" in the upper-right corner, I assume that means it works :)

18:04 <_florent_> Custom USB3 <--> PCIe cable :): https://github.com/enjoy-digital/usb3_pipe/issues/3#issuecomment-538501003 (to be able to test a USB3 Pipe with PCIe dev boards)

18:04 <tpb> Title: Define 7-Series/ECP5 Test Setup · Issue #3 · enjoy-digital/usb3_pipe · GitHub (at github.com)

18:09 <daveshah> somlo: very nice! Sounds like the chip is happy!

18:14 <somlo> https://www.contrib.andrew.cmu.edu/~somlo/BTCP/trellis.mp4

18:15 <somlo> \o/

18:16 <somlo> litex+rocket on the TrellisBoard is my goal for next week :)

18:17 <_florent_> somlo: nice!

18:18 <somlo> 85k ecp5 should be much less "cramped" than the Versa :)

18:18 <daveshah> There is a TrellisBoard target here: https://github.com/litex-hub/litex-boards/blob/master/litex_boards/partner/targets/trellisboard.py

18:18 <tpb> Title: litex-boards/trellisboard.py at master · litex-hub/litex-boards · GitHub (at github.com)

18:19 <somlo> daveshah: thanks, I'll start there!

18:20 <daveshah> It may only give 512MB by default without changes to soc_sdram

18:21 <somlo> I was about to study soc_sdram and how I could bypass the main wishbone bus and connect the sdram datapath directly to the rocket chip's cached axi port, natively at 64bit

18:21 <somlo> should be easy

18:21 <daveshah> Yeah, that makes sense

18:21 <somlo> but I decided to procrastinate and test the trellis board instead, it's Friday after all :)

18:22 <somlo> so all I'm saying is that tinkering with soc_sdram is a timely thing :)

21:25 <forksand> somlo: congrats looks great. :)

23:01 <somlo> forksand: thanks, I'm really happy and relieved Sierra Circuits (protoexpress.com) managed to get it right

23:01 <somlo> but credit goes to daveshah for answering their pcb engineering questions, I personally felt lost in the sauce, like a meatball :D

23:06 <forksand> somlo: cool you went with sierra circuits / protoexpress. Had you used them before or had you seen that is who I used? Cuz that is who I used too.

23:07 <forksand> I went to the KiCAD conference website and checked out all the board houses that sponsored it and checked them out. I really like protoexpress ticketing system.

23:07 <somlo> forksand: they were recommended to me by my uni's ECE folks, total coincidence w.r.t. you using them as well :)

23:07 <forksand> somlo: it would be interesting to compare what tickets they created for you versus what tickets they created for me. I have most of them here: https://code.forksand.com/forksand/fs-TrellisBoard/issues?q=&type=all&state=closed&labels=1&milestone=0&assignee=0

23:07 <tpb> Title: Issues - fs-TrellisBoard - Fork Sand Source Code (at code.forksand.com)

23:07 <somlo> I could have pointed them at your order number for the q&a section of the process, had I known :)

23:08 <forksand> heh

23:08 <forksand> funny that of the boards not by dave, they've done both of them. :)