18x18 multipliers



For the upcoming EX board, how can we use the 18x18 multipliers? Is this something that can be inferred by yosys or Project Trellis? I believe I’ve seen them referred to in Uwe Meyer-Baese’s book (on DSP stuff) but I’ve never tried using them before.



Yes, if you are using fairly recent Yosys then a “*” in Verilog of sufficient width will map to these primitives.


Great! That is easier than I had hoped.