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<hell__> silly question: is there something like `Turing completeness` but for HDLs?
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<Lofty> hell__: that's actually a pretty good question, but I think a lot of HDLs are Turing complete because the underlying target is Turing complete
<daveshah> In particular, if you have unlimited access to NAND or NOR gates and either logic loop support or a dedicated storage element, then theoretically anything can be built
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<hell__> ah, true
<hell__> just having NAND, NOR and some sort of storage would suffice
<hell__> thank you!
<vup> (one of NAND or NOR is enough)
<hell__> (I forget)
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<implr> which relate the depth (and in turn size) of a circuit with a complexity class
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<Lofty> How dumb is it to consider using a USB port to power your theoretical FPGA board?
<hell__> hrm, Glasgow isn't theoretical and is powered from a USB port
<Lofty> e.g. the ECP5 Versa and DE10-Nano both come with their own power supplies and I'm more than a little tired of trying to find them
<zyp> completely depends on how much power you're gonna need
<daveshah> I deliberately designed the TrellisBoard to support USB power for this reason
<hell__> e.g. I don't think powering one of those FPGA devboards with SO-DIMM slots through USB is a good idea
<daveshah> Yes, with some bitstreams it technically breaks USB specs but hey ho
<Lofty> My target chip is a Cyclone 10 GX. It's difficult to estimate exactly how much power it's going to draw
<daveshah> The best option is to support both USB power and external DC in
<hell__> ^
<zyp> hell__, I'm designing a board with a so-dimm slot that can be usb-powered :)
<daveshah> Even if it is just a jumper like some of the Digilent boards
<hell__> maybe even have some jumper to choose where to power the board from
<zyp> but I'm gonna support USB PD
<hell__> I was thinking of something like https://i.ebayimg.com/images/g/dqoAAOSwB2JcEDan/s-l1600.jpg
<Lofty> My target chip is a Cyclone 10 GX. It's difficult to estimate exactly how much power it's going to draw
<Lofty> ...
<Lofty> Thanks arrow keys
<Lofty> Speaking of power supplies, it would appear my Versa power supply has gone missing
<Lofty> Which is always a fantastic start
<hell__> intel says there's th Excel-based Early Power Estimator
<hell__> s/th/an
<Lofty> Yep
<hell__> 32.5 MiB excel
<Lofty> Predictably, it does not run under libreoffice
<hell__> you also tried it? :-)
<Lofty> Yep
<Lofty> God, this is entirely unusable
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<Lofty> And I don't have Excel or anything to try this with
<Lofty> The only useful figure I got was that the FPGA statically draws 0.712W :P
<Degi> Lol
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<tpw_rules> how did they get openssl into an xlsx
<tpw_rules> xls, no less!
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