[libre-riscv-dev] Cell libraries needed for coriolis
Luke Kenneth Casson Leighton
lkcl at lkcl.net
Fri Feb 7 15:43:52 GMT 2020
On Fri, Feb 7, 2020 at 3:40 PM Jean-Paul Chaput
<Jean-Paul.Chaput at lip6.fr> wrote:
> Hello Luke,
> There is also the mandatory point of the target technology. I got the
> impressions that you wanted to use a 180nm one (which is the limit for
> which Coriolis can be made to work in a reasonable amount of time).
yes, although i *think* staf might have access to 130nm.
> This should be discussed with Staf also. This is important because
> we need that information to configure the symbolic layout for it
> (typically, how many metal layers, are they all usable for routing
> normal wires and so on). Then we can make place & route that are
> sufficiently realistics.
> And lastly, there is the tricky part of writing the translation rules
> symbolic to real (that is GDSII). We have tried to automate that in
> the past but never finished for various non-technical reasons...
> This may be the occasion.
that would be helpful, or at least know what needs to be done so it
can go on the list of tasks.
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