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  #1 (permalink)  
Old 05-28-2006, 06:55 PM
purple_stars
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Default fpga uclinux, good starter board ?

hi folks,

i'm looking for suggestions on a good starter board/fpga so i can try
my hand at getting uclinux to run on an fpga with ethernet and serial
connections. something not too terribly expensive would be nice, but
also something capable, something i can use for getting into the whole
"fpga uclinux" thing .. that won't tie my hands later because it's too
small, slow, or just weak. it would be nice if it used a widely
available fpga that i could gain experience with so that at some later
time i might surface mount one myself on a board of my own creation.

thank you!

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  #2 (permalink)  
Old 05-29-2006, 09:07 AM
xsteve
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Default Re: fpga uclinux, good starter board ?

You could look at the hpe mini boards from Gleichmann Electronics
Research: http://www.ger-fae.com/hpe_mini.html

There is a board for Altera CycloneII EP2C35 (350 Euro)
And one for Lattice ECP33 (450 Euro)

Stefan.

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  #3 (permalink)  
Old 05-29-2006, 10:08 AM
Antti
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Default Re: fpga uclinux, good starter board ?

and there is really uclinux available on the Lattice board??

WAU!
I did not know.

Antti

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  #4 (permalink)  
Old 05-29-2006, 01:54 PM
John Adair
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Default Re: fpga uclinux, good starter board ?

Have a look at our Raggedstone1 product. RS1-400 has Spartan-3 XC3S400
on it at GBP50 + VAT (if applies). RS232 (stock) and Ethernet
interfaces(stock next week) modules are available. Basic details here
http://www.enterpoint.co.uk/moelbryn/raggedstone1.html.

John Adair

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  #5 (permalink)  
Old 05-29-2006, 02:21 PM
Antti
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Default Re: fpga uclinux, good starter board ?

John,

your boards are EXCELLENT for the money they cost but this time the OP
asked for 'uclinux' ready boards.

the requirement for uclinux is

1) xilinx FPGA S2-200 or larger, S3-1000 or larger preferred
2) 4MB RAM
3) some way to load boot image 2MB flash or some media load the image
from

Raggestone1 does not have a option with 4MB ram ASFAIK so its not an
option for the OP

Antti

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  #6 (permalink)  
Old 05-29-2006, 03:03 PM
xsteve
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Default Re: fpga uclinux, good starter board ?

To be honest. Linux support for these boards is work in progress.
There is a 32MByte Flash memory to host the boot image.

There is a compact flash interface on the board.
Jiri Gaisler is AFAIK working on a way to boot linux from a compact
flash.

Additionally there is a DDR RAM interface that should give access to
memory
sizes of up to 1 GByte.

So the hardware support for very capable linux systems is ready on the
board.
The software support is being worked on.

Stefan.

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  #7 (permalink)  
Old 05-29-2006, 03:42 PM
Antti
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Default Re: fpga uclinux, good starter board ?

sure I know, but it isnt ready yet.

leon can run linux and it can run on the lattice board, *when* it is
ported and tested.

Antti

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  #8 (permalink)  
Old 05-30-2006, 03:32 PM
John Adair
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Default Re: fpga uclinux, good starter board ?

Well actually you can buy a single chip 4 Mbit RAM that will fit the DIL
headers. There are solder bridges to facilitate that chip and others and
there is one in Farnell last time I looked. A RAM module is also on it's way
to if that is not enough. If you want more boot space then we can also
accomodate a disk drive or MMC card with module add-on.

John Adair
Enterpoint Ltd. - Home of Broaddown2. The Ultimate Spartan-3 Development
Board.
http://www.enterpoint.co.uk


"Antti" <[email protected]> wrote in message
news:[email protected] oups.com...
> John,
>
> your boards are EXCELLENT for the money they cost but this time the OP
> asked for 'uclinux' ready boards.
>
> the requirement for uclinux is
>
> 1) xilinx FPGA S2-200 or larger, S3-1000 or larger preferred
> 2) 4MB RAM
> 3) some way to load boot image 2MB flash or some media load the image
> from
>
> Raggestone1 does not have a option with 4MB ram ASFAIK so its not an
> option for the OP
>
> Antti
>



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  #9 (permalink)  
Old 05-30-2006, 03:53 PM
Antti
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Default Re: fpga uclinux, good starter board ?

John,

the requirement is 4 MBYTE RAM
not 4 mbit !!

there is no dil socketed 3.3V 4MBYTE ram modules available ASFAIK

Antti

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