Friday, 2020-04-03

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sf-slack<p.vanleeuwen> Hey there! I'm working on my graduation thesis (CS) in which I analyse FPGA emulation (specifically, the ECP5). For this, it would be very helpful to have a graph/network model of an FPGA. The Trellis project collected the information that I need, but I can't seem to find how to extract the (connectedness) information from this project. The JSON files are only machine-readable and the HTML documentation seems14:18
sf-slacksparse as well (I have no background in hardware / FPGAs). Can anyone recommend me how to obtain this connectedness information / graph model? Any help would be greatly appreciated:D Best regards, Pim14:18
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ZirconiumXdaveshah ^14:39
daveshahp.vanleeuwen: If you look in the per-tile databases, all the connections are there14:40
daveshahhttps://github.com/SymbiFlow/prjtrellis-db/blob/master/ECP5/tiledata/PLC2/bits.db14:40
tpbTitle: prjtrellis-db/bits.db at master · SymbiFlow/prjtrellis-db · GitHub (at github.com)14:40
daveshah.mux is for programmable connections, and .fixed_conn <dst> <src> for fixed connections14:41
daveshahThere's a normalisation scheme, so E3_ for example is a reference to a named wire in the grid location 3 to the east14:41
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hackerfooI added some documentation for my VTR testing Nix configuration: https://github.com/HackerFoo/vtr-nix-test21:21
tpbTitle: GitHub - HackerFoo/vtr-nix-test: Using Nix to run VTR tests (at github.com)21:21
hackerfooI'm getting ready to run a sweep over `--inner_num` for `vtr_reg_weekly`.21:21
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-_whitenotifier-3- [symbiflow-arch-defs] mithro opened issue #1394: Add version to .travis.yml file - https://git.io/JvbcY22:24
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-_whitenotifier-3- [prjxray] mithro opened issue #1288: Add version to .travis.yml file - https://git.io/JvbcG22:25
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sf-slack<timo.callahan> Hi all, is there an existing test/demo for Symbiflow + Litex/VexRiscV + Linux targeting Arty A7 35T?    I know of the Vivado-based example (https://github.com/litex-hub/linux-on-litex-vexriscv), and Symbiflow+Linux on Zynq (https://github.com/antmicro/symbiflow-linux-guide), but not exactly the combination I mentioned.  Thanks for any tips!22:44
tpbTitle: GitHub - litex-hub/linux-on-litex-vexriscv: Linux on LiteX-VexRiscv (at github.com)22:45
litghosthttps://github.com/SymbiFlow/symbiflow-arch-defs/tree/master/xc/xc7/tests/soc/litex/mini_ddr ?22:47
tpbTitle: symbiflow-arch-defs/xc/xc7/tests/soc/litex/mini_ddr at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)22:47
litghostSorry https://github.com/SymbiFlow/symbiflow-arch-defs/tree/master/xc/xc7/tests/soc/litex/base22:48
tpbTitle: symbiflow-arch-defs/xc/xc7/tests/soc/litex/base at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)22:48
sf-slack<timo.callahan> Thanks litghost, I'll take a look.22:51

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