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| 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 :) | 18:03 |
|---|---|---|
| _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) | 18:04 |
| daveshah | somlo: very nice! Sounds like the chip is happy! | 18:09 |
| somlo | https://www.contrib.andrew.cmu.edu/~somlo/BTCP/trellis.mp4 | 18:15 |
| somlo | \o/ | 18:15 |
| somlo | litex+rocket on the TrellisBoard is my goal for next week :) | 18:16 |
| _florent_ | somlo: nice! | 18:17 |
| 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) | 18:18 |
| somlo | daveshah: thanks, I'll start there! | 18:19 |
| daveshah | It may only give 512MB by default without changes to soc_sdram | 18:20 |
| 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 :) | 18:21 |
| somlo | so all I'm saying is that tinkering with soc_sdram is a timely thing :) | 18:22 |
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| forksand | somlo: congrats looks great. :) | 21:25 |
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| 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 | 23:02 |
| 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. | 23:06 |
| 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. :) | 23:08 |
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