[libre-riscv-dev] pinmux in nmigen

[Hendrik Boom]

On Fri, Apr 12, 2019 at 07:40:30PM +0530, Rishabh Jain wrote:
> Yes, reduction in cache size means lookup and comparison of tags will
> consume less energy. Are u aware of any research showing comparison of
> different ISA's with RISCV for energy efficiency? I am curious to
> understand how designers do the benchmarking here.

No.  I just remember hearing the implementers of the original RISC chip 
saying they were astonished how fast it tirned out to be.

-- hendrik

> 
> I worked for around 2 months. If I remember correctly, the project started
> early and continued till September.
> 
> 
> On Fri 12 Apr, 2019, 6:30 PM Luke Kenneth Casson Leighton, <lkcl at lkcl.net>
> wrote:
> 
> > On Fri, Apr 12, 2019 at 1:51 PM Rishabh Jain <rishucoding at gmail.com>
> > wrote:
> > >
> > > one quick question: I checked this link:
> > > https://www.crowdsupply.com/libre-risc-v/m-class while I was reading
> > your
> > > post on riscv hw-dev group. It says " With RISC-V being 40% more power
> > > efficient than x86 or ARM...", an eye-opener
> > > for me.
> >
> >  it's down to the use of compressed instructions, resulting in a
> > reduction in cache size.
> >
> > > can we put implementation of pinmux in nmigen as a big task for NLnet
> > > foundation proposal?
> >
> >  yes, definitely.  with small subtasks as well.
> >
> > > we can discuss over breaking into milestons .. and have a rough timeline
> > > for completion?
> >
> >  the last time it took... what... four to five months?
> >
> > l.
> >
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