ChanServ changed the topic of #yosys to: Yosys Open SYnthesis Suite: https://github.com/YosysHQ/yosys/ | Channel logs: https://libera.catirclogs.org/yosys/ | Bridged to #yosys:matrix.org
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<adehop[m]> I have a question regarding nextpnr-ecp5: when setting device type to 12k via "--12k", output for device utilization is the same as for 25k devices ("Total LUT4s: xxxx/24288"). When changing to 45k or 85k devices, output is as expected. Is there something special with 12k devices compared to the other ones?
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<Wanda[cis]> ah, heh, umm
<Wanda[cis]> well
<Wanda[cis]> how do I put it
<Wanda[cis]> there's no such thing as a 12k
<whitequark[cis]> the only things that differ between 25k and 12k is the IDCODE and price
<Wanda[cis]> (a 12k is the same device as a 25k, it's just that vendor toolchain limits it to half capacity in software)
<whitequark[cis]> (well, i think there are also different package and SERDES options between the two)
<Wanda[cis]> (unfortunately noone has gotten around to implementing this in nextpnr yet, for some reason)
<adehop[m]> Oh thank you for the info, i found an ULX3S with 12k, with that info i may get one :-)