Re: [racket-users] Experiences with Racket on RISC-V?

['Paulo Matos' via Racket Users]

On 08/01/2019 13:34, Bruce O'Neel wrote:
> 
> Hi,
> 
> The HiFive1 is a 32 bit integer only machine, sadly.  I guess I must
> admit being a bit old to re-do software floating point.  I still have
> nightmares of ARM and then later 68000 systems.
> 
> Your right about the HiFive Unleashed would be a good system, but,
> expensive.
> 

For sure. I talked to them in the last RISC-V Workshop and they told me
the followup will be considerable cheaper but also produced in larger
numbers.

I have seen also a considerable surge in customers wishing to work with
RISC-V, therefore RISC-V ports pay a lot of my bills at the moment.
Unfortunately none to port Racket to RISC-V, yet. :) This means that I
would hope that many more devices will come in the short term into
market based on RISC-V.

> 
> 
> 
> /07 January 2019 23:06 Neil Van Dyke <n...@neilvandyke.org> wrote:/
> 
>     These are pretty new, and the prices are higher than other ISAs with
>     economies-of-scale and mostly long-amortized development costs (and
>     there's perhaps no loss-leaders or dumping for market share or lock-in,
>     like we sometimes see in industry).
> 
>     The HiFive1 is more like a $60 Arduino or maybe RasPi:
>     https://www.sifive.com/boards/hifive1
> 
>     The HiFive Unleashed, when combined with their Expansion Board,
>     could be
>     used to make a workstation, but is pretty new, and costs thousands of
>     dollars:
>     https://www.sifive.com/boards/hifive-unleashed
> 
>     I've seen "RISC-V" USB dongle-like boards, but the ones I've seen are
>     just little FPGA experimenter boards burnt with RISC-V logic.
> 
>     That's what I found, last time I looked.  Paulo or others might know
>     other boards.
> 
>     There's also always emulators, and RISC-V logic you program yourself on
>     bigger general-purpose FPGA boards.  (Programming FPGA yourself means
>     you're one small enhancement away from being able to call yourself a
>     CPU
>     designer.  :)  If you do FPGA, it would help to try to use an open
>     toolchain, but I think the options for that are still relatively early
>     and improving.  (Last I looked, the open toolchains would let you use
>     only a few small FPGAs, but I saw something the other day that suggests
>     the environment is improving, so look for the latest info/news,
>     whenever
>     you start.)
> 
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-- 
Paulo Matos

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