RetroBSD

2.11BSD operating system for microcontrollers
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 Post subject: Arty goes retro??
PostPosted: Wed Aug 31, 2016 3:37 pm 
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This is what I've been waiting since ever - create your own Vax/pdp now!
With arduino headers :)
FYI - 18 is an Artix 7 FPGA and 19 is 256MB DDR3..
What I miss is an sdcard socket..
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arty.JPG
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https://reference.digilentinc.com/refer ... :refmanual

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 Post subject: Re: Arty goes retro??
PostPosted: Wed Aug 31, 2016 4:28 pm 
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While messing currently with microblaze-mcs and spartan6 I guess you must be able to put 10-16 pdp-like processors on it..

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 Post subject: Re: Arty goes retro??
PostPosted: Wed Aug 31, 2016 6:48 pm 
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SD card is available as additional module: http://store.digilentinc.com/pmodsd-sd-card-slot/

It is possible to flash the Arty board with RISC-V core and run Linux on it: https://rwmj.wordpress.com/2016/07/27/risc-v-on-an-fpga-pt-7/


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 Post subject: Re: Arty goes retro??
PostPosted: Wed Aug 31, 2016 8:41 pm 
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16nm XCVU13P Virtex Utra Plus Scale FPGA chip offers up to:

Code:
3.800.000 logic cells
12000 dsp slices
455Mbit of block ram
12x 100Gbit Ethernets
4x PCIe 3Gen, 4Gen
128x 32Gbit transceivers
7Tflops single precision capability


Do we still need I7, I5, FX, pic32, stm32 and a such..? :)

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 Post subject: Re: Arty goes retro??
PostPosted: Wed Aug 31, 2016 11:40 pm 
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We still need i7 to be able to build a bit file for FPGA.
And we need pic32 to avoid all this hustle and keep it simple. :)


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 Post subject: Re: Arty goes retro??
PostPosted: Thu Sep 01, 2016 6:50 am 
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That is why Intel acquired Altera - I am going to upgrade my PC (to I7) as the generating a bitfile takes much longer than to build the retrobsd or litebsd :D :D

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 Post subject: Re: Arty goes retro??
PostPosted: Sat Sep 17, 2016 9:47 pm 
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The board is currently offered by Avnet in EU for $130 excl shipping costs.
ARDUINO COMPATIBLE JOKE :)

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 Post subject: Re: Arty goes retro??
PostPosted: Sat Sep 17, 2016 10:47 pm 
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I got myself Basys3 board instead. It's $149 plus shipping, a bit more expensive than Arty-7, but better suits my needs.

Looks like the prices for FPGA boards are not quite friendly in Europe.


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 Post subject: Re: Arty goes retro??
PostPosted: Sun Sep 18, 2016 8:21 am 
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That is about local distributor's greed :), and missing free trade agreement with US/Canada/Mexico.
The $99 in US should be worth 88E in EU, afaik.. (plus 2E shipping).

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 Post subject: Re: Arty goes retro??
PostPosted: Sun Sep 18, 2016 8:45 am 
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Hi All,

Both FPGA boards looks interesting. No DDR from what I can tell.

Also, Xilinx is the king of smoke and mirrors. I have dual MIPS running on Spartan 3e, but DDR has never been reliable. Apparently there is a whole hidden part of Xilinx design language needed to make routing for DDR really work.

And Serge if I could please ask you three questions:

LiteBSD - Is kernel space also virtual [2gBytes]? and LiteBSD does not support loadable kernel modules?

When did BSD start supporting kernel loadable drivers/modules?

I really need to get this working.

Thanks.

Wiz


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 Post subject: Re: Arty goes retro??
PostPosted: Sun Sep 18, 2016 9:22 am 
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@Wiz: Arty got DDR3
Quote:
256 MB DDR3L with a 16-bit bus @ 667 MHz


Loadable module - Wiz pls start a new post as it is an interesting topic which needs its own thread :)

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 Post subject: Re: Arty goes retro??
PostPosted: Sun Sep 18, 2016 7:13 pm 
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Hi Pito,

I keep wondering if VAX/VMS and DecNet and VAX Cluster may be worth resurrecting and getting up and running and then extending the design of? A lot of it is pretty well documented.

And some of the DEC ideas were pretty good!

Certainly fast fpga and DDR make me think that is probably doable. I don't know much about the VAX instruction set, but I remember a comment to the effect that our MIPS is better than their MIPS which I suspect is true.


Not sure what to name a new thread? But it is currently where I am regards RetroBSD and LiteBSD and friends.


And totally off topic, I just bought a new 1TB USB drive. Only works with newer distributions :(. I wonder if I can just replace the NTFS filesystem with a more friendly Unix filesystem and still have the drive work? They are now cheap enough!

So from where I look, USB is not the same as USB anymore!

Lots of fun :).

Wiz


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 Post subject: Re: Arty goes retro??
PostPosted: Wed Sep 21, 2016 9:58 pm 
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Hi Pito,

I was thinking about your DDR3 numbers verses USB.

USB3a [10 gbs] 'should' just about handle a DDR3 in real time?

If that is the case then the FPGA board could 'serve' its DDR to a number of connected computers.

I wonder what your thoughts are as to how to connect the DDR to the PIC32 and put it in its memory system might be?

Lots of fun :).

Wiz


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 Post subject: Re: Arty goes retro??
PostPosted: Thu Sep 22, 2016 8:16 am 
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I do not know how DDR3 and USB3 is related :?
Those are different things.
You cannot connect DDR3 to pic32mz, the same with USB3..
Pic32 is not powerful enough to handle such datarates like hundreds of megabytes per second.
We have problems with zmodem at 115k2 :)

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 Post subject: Re: Arty goes retro??
PostPosted: Thu Sep 22, 2016 9:43 am 
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Pito, you should know by now to ignore the gibberish that comes out of Wiz's mouth ;) Especially if it includes the words "modules", "loadable" and "kernel" ;)

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 Post subject: Re: Arty goes retro??
PostPosted: Thu Sep 22, 2016 9:12 pm 
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Hi Matt,

Glad to hear you are alive and well :).

Does your IDE run on LiteBSD yet:).

Lots of fun :).

Wiz


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 Post subject: Re: Arty goes retro??
PostPosted: Thu Sep 22, 2016 10:40 pm 
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It will when three things have been achieved:

1. Java has been ported to LiteBSD
2. All the compilers have been ported to LiteBSD
3. The complete glaciation of Hades.

So basically when we get a PIC32MZ...DA based board up and running with a big chunk of DDR.

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 Post subject: Re: Arty goes retro??
PostPosted: Fri Sep 23, 2016 6:37 pm 
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:) :)
Do you think Wiz is using a "retrobsd based postings generator" with "loadable kernel module" keys?

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 Post subject: Re: Arty goes retro??
PostPosted: Fri Sep 23, 2016 6:45 pm 
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Between you and me, I think Wiz is a small Perl script...

In fact, I once wrote and ran a small chat bot system (it was a virtual user that connected to multiple chat systems and allowed interaction between the users on all of them) written in Perl. It was called Wizbit. I wonder if he has gone rogue, replicated himself, and ended up as Wiz...?

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 Post subject: Re: Arty goes retro??
PostPosted: Fri Sep 23, 2016 6:58 pm 
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Now we know who wrote the software for Presidents who chat online with their citizens.. :)

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