Getting started with Alchitry Cu using Yosys, Arachne-pnr and Icepack

Hi,

I highly recommend to use Nextpnr (https://github.com/YosysHQ/nextpnr) as Arachne-pnr is not maintained anymore and has some issues (see https://forum.alchitry.com/thread-12.html).

  • RRC