[Libre-soc-bugs] [Bug 633] custom run of ulx3s with 85k LUTs 5G part, and 128 mbyte (1 gigabit) SDRAM

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Tue Apr 27 12:15:49 BST 2021


--- Comment #8 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Staf Verhaegen from comment #7)
> With current chip crunch and part lead times I'm not sure thinking about own
> custom PCB is a good idea; especially if it is time critical.

fortunately there is stock - not very much, but at least some.
(for now)

> There is a 85F version of ULX3S available on crowdsupply:
> https://www.crowdsupply.com/radiona/ulx3s

it only has 32 mbytes of RAM.  this is nowhere near enough.

> If speed is really important maybe better to think about Intel/Xilinx FPGA
> anyway. For example Trenz Electronics has a whole bunch of them:
> https://shop.trenz-electronic.de/en/Products/Trenz-Electronic/


interesting.  modular design.

> They also do custom modification to boards or your own design (like the
> MEGA65 prototype).

these are non-libre tools, unfortunately.  our customer has a specific
need for Libre tools.  that means ECP5 at the moment, until nextprn
can support other FPGAs.

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