Pro tips when using Migen's SyncFIFO() module in your pipeline design...

I went from 70 MHz max frequency to 100+ MHz by just adding this parameter: `buffered=True`

It helped a lot for timing closure of the design :)

I started a project page to document my first FPGA project on a long while, mainly so that I don't forget, but could possibly be useful to others... I'll plan to add subsequent projects and make more progress on this one in the next few weeks and months.

I bought myself a Radiona ULX3S from CrowdSupply, which includes the 85k Lattice ECP5 FPGA, which can be programmed to simulate the open source 32-bit RISC-V CPU with a completely open source LiteX-yosys-nextpnr, toolchain.

https://blog.bomorgan.io/hobbies/hardware/fpgas/litex-riscv-ecp5-ulx3s/

https://www.reddit.com/r/FPGA/comments/1hvtgn9/fpga_developers_forum_2025_call_for_abstracts/

The 50€ #olimex #Gatemate board is a great value.

https://www.olimex.com/Products/FPGA/GateMate/

The extension boards make it a very viable choice.

https://github.com/intergalaktik/Extension_Boards_for_Olimex_GateMate
@olimex #fpga #ECP5 #pico-ice

Routing in progress!

@BrunoLevy01 I have several #FPGA boards here. Three of them have an #ICE40 FPGA, three of them are Xilinx-based, and the last is the #ECP5 evaluation board with an ECP5-5G 85F. Which do you recommend for your FPGA tutorial series? Thank you!

Clearly the #LatticeSemi #ECP5 (and iCE40) #FPGA dominates the landscape of #yosys / #nextpnr compatible dev kits but where are the #Nexus board? Anyone knows why? Availability, unfamiliarity, value, performance?

AHHHH! I finally got a ring oscillator working on #ECP5 with the #Yosys / #Nextpnr tool chain (I’m not complaining, I’m happy they exist and I’m doing something unorthodox)

You have to instantiate the inverters as LUTs directly *AND* you have to build the latest tools yourself (I had two different binaries segfault on the design).

https://github.com/YosysHQ/nextpnr/issues/1194#issuecomment-1684724413
#verilog #fpga #ncl #asynclogic

Heya #fpga #embedded crowd!

Is there any #ECP5 dev board/module out there, that basically breaks out most of the IOs of the LFE5U-85?

I'm looking for something like the Colorlight i9, but for my project, i need to have the LFE5U-85.