14:23 <OmniMancer> How would one find out how to help out with Project Tang?

15:18 <hackerfoo> OmniMancer: You could talk to the people working on it.

15:58 <hackerfoo> OmniMancer: If you're talking about the Anlogic FPGA in the Lichee Tang, I don't know of such a project.

16:13 <OmniMancer> I have found this: https://github.com/mmicko/prjtang

16:13 <tpb> Title: GitHub - mmicko/prjtang: Documenting the Anlogic FPGA bit-stream format. (at github.com)

16:13 <OmniMancer> I will see if I can get in tough with the author then

16:13 <hackerfoo> OmniMancer: Thanks.

16:15 <hackerfoo> Many of the projects are by different people or groups, for example prjmistral (Cyclone V.)

16:17 <OmniMancer> Indeed

16:56 <litghost> acomodi: Any results on which murax/picosoc nets are taking so long in the ROI-less graph?

16:57 <litghost> The results from my run last night were showing that 2 or 3 nets were massively misbehaving, so I think the hypothesis that certain nets are taking much more time may be borne out

17:10 <sf-slack> <acomodi> @litghost I have not been able to get any meaningful results. I am currently running another build with the latest changes in arch-defs. It should end in a couple of hours. Did the net you found have to do with clocking trees?

17:11 <litghost> acomodi: I haven't found the net specifically, only that I saw the router take a long time (e.g. ~1 hr) to reroute 3 nets

17:11 <litghost> acomodi: That seems super excessive, and likely points to something going wrong

17:12 <litghost> acomodi: I haven't investigated any further than that, hence why I was asking if you had found anything yet

19:43 <mithro> https://twitter.com/fpga_dave/status/1187069745046142977

21:26 <sf-slack> <max> Does anyone have any experience with post routing simulation? I am doing work with asynchronous circuits as a research project, and having good delay estimates in simulation would be a huge help but I am having trouble finding anything in nextpnr or project trellis (using an ecp5).

21:27 <daveshah> max: I'm working on it, see https://github.com/YosysHQ/nextpnr/pull/345

21:27 <tpb> Title: Improve handling of top level IO and add SDF support by daveshah1 · Pull Request #345 · YosysHQ/nextpnr · GitHub (at github.com)

21:27 <daveshah> I haven't tried it for ECP5 yet, some sim model changes will be needed but the nextpnr side should work for ECP5 too

21:28 <sf-slack> <max> thats awesome! I'll have a look

21:30 <sf-slack> <max> Ah, I was under the impression that icarus could reasonably handle sdf files. Not having an open source option may be an issue.

21:31 <daveshah> Someone just pointed out cvc as a possible option

21:31 <daveshah> I haven't tried it myself yet

21:36 <sf-slack> <max> I might give that a shot. Im using cocotb to generate tests just because it saves some time, but I reckon I will only need some basic test benches for post routing simulations.