Re: [GTALUG] Western Digital's open source RISC-V core

[Stewart Russell via talk]

Yeah, I think it is. This link from Seeedstudio (a well respected open
hardware company, and yes, they have 3 Es) has all the goods, including
super-tiny Linux boards:

https://www.seeedstudio.com/sipeed

Cheers
 Stewart


>
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Re: [GTALUG] Western Digital's open source RISC-V core

[Daniel Wayne Armstrong via talk]

On Thu, Mar 14, 2019 at 4:14 PM Christopher Browne via talk 
wrote:

> I think it's the Liche Tang that Chris was referencing when he mentioned a
> "$17 board".  AliExpress sells it for $31 CAD; I'm not sure where to get it
> for $17, and that might be $17 USD.
>

Chris mentioned it was offered by SeeedStudio ... I think its this one
- "Sipeed
TANG PriMER FPGA Development Board" available for $17.90 USD ...

https://www.seeedstudio.com/Sipeed-TANG-PriMER-FPGA-Development-Board-p-2881.html
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Re: [GTALUG] Western Digital's open source RISC-V core

[Christopher Browne via talk]

On Thu, 14 Mar 2019 at 15:30, D. Hugh Redelmeier via talk 
wrote:

> I assume that you can put this on a FPGA, as Chris Tyler talked about on
> Tuesday.  I haven't checked this.  I think that it is in verilog, but I'm
> not sure.
> 
>
> There's also an emulator:
> 
>
> I have no idea if there is MMU support in the core (needed for reasonable
> Linux).
>

If you search at AliExpress.com, for "risc-v", a whole lineup of options
pop up, all FPGA boards of one sort or another.

For instance, one called "Liche Tang", and another that's a Xilinx FPGA
(that Chris mentioned at the meeting), specifically, in the Artix-7 series,
the XC7A35T and XC7A50T processors, the first with around "35K cells" and
the other with around "50K cells".

A couple of reviews out there of the "Liche Tang":
- https://justanotherelectronicsblog.com/?p=470
-
https://www.cnx-software.com/2018/09/04/licheetang-anlogic-eg4s20-fpga-board-targets-risc-v-development/

I think it's the Liche Tang that Chris was referencing when he mentioned a
"$17 board".  AliExpress sells it for $31 CAD; I'm not sure where to get it
for $17, and that might be $17 USD.

The justanotherelectronicsblog.com link has considerable useful detail for
the likes of us, pointing to Verilog code repos, development tools, and
quite a bit of other relevant stuff should one spend $17/$31 and want to
play with it.

The one thing it seems to be missing that I wish it had was Ethernet.  I
imagine that could be a Bit of Verilog Away, though that somehow feels like
an oversimplification.  (Opencores.org has a whole bunch of Ethernet
implementations!  Thanks for the pointer, Kevin!)

There's a bit of a world of "and now what to do about a distribution?"
after that; that would be absolutely on point here.  The notion of a little
RISC-V chip running a Linux from Scratch using S6 and MUSL seems
interesting as a substrate to run more stuff on...
-- 
When confronted by a difficult problem, solve it by reducing it to the
question, "How would the Lone Ranger handle this?"
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Re: [GTALUG] Western Digital's open source RISC-V core

[Kevin Cozens via talk]

On 2019-03-14 3:30 p.m., D. Hugh Redelmeier via talk wrote:

I assume that you can put this on a FPGA, as Chris Tyler talked about on
Tuesday.  I haven't checked this.  I think that it is in verilog, but I'm
not sure.
Yes, it is in Verilog. It could be put on any FPGA that has enough logic 
elements inside. There are some other RISC cores available at the opencores 
website (www.opencores.org).


--
Cheers!

Kevin.

http://www.ve3syb.ca/   | "Nerds make the shiny things that
https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
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