One question ... is thee any way I can procure a Brutus board ??
Maybe my companyu can use it ...

Please let me know .

Kumar


Vasant Ramasubramanian <[EMAIL PROTECTED]> wrote:
> > Another option to consider for Brutus is USB downloading support; however
> > I don't know how complex it would be to allow one to download a new
> > kernel/RAMDISK via USB. Also I believe the SA1100 has several USB issues
> > that make this task increasingly difficult.
> 
>       I think TFTP boot would be easier to implement. :)

Sounds good =). Any takers? ;).
>  
> > If there is sufficient interest, I might consider laying out a ROM SIMM
--
> > at the moment I'm trying to make an IDE/PCMCIA board.
> 
>       I don't understand the idea of ROM SIMM.
>       Could you compare it with the original flash ROM on Brutus?
>       Thank you.
> 

Sure. Brutus has socketed FlashROM (and spaces for you to solder in some
Sharp FlashROM is you so desire). It also has a SIMM socket, 72-pins wide;
the Brutus boards supports booting from this SIMM, so I was saying maybe
someone could make a "FlashROM SIMM" and put it in this 72-pin socket.
This way you could make the FlashROM SIMM as big as you need[in
megabytes], and use ICs supported by BLOB so working with a FlashROM
writer wouldn't be so hard.

Furthermore, the FlashROM Brutus comes with is 512KB in size (not
including the ROM only parts with Angel), using a ROM SIMM you could
accommodate large kernels/RAMDISKs so you aren't as limited in size.

I think 512KB is pushing the limits for an ARM development system but a
FlashROM SIMM with 4MegaBytes would be plenty.

In addition, with the FlashROM SIMM you could have one or more and swap
them out for debugging. Two PLCC parts are a bit harder to remove than a
single PCB.

One caveat is that you would have to write a pre-SIMM boot loader so that
you could load the bootloader into the SIMM, then from there on out you
could boot from the SIMM and update your stored kernels and RAMDISKs and
what not.


White Electronic Designs has some FlashROM SIMMs; unfortunetly they don't
make a standard 72-pin size SIMM, they make a 72-pin SO-DIMM and an 80pin
SIMM.

http://www.whiteedc.com

Here is a link to the Flash products, that long url should be one line.


http://www.whiteedc.com/cgi-bin/search.cgi?file=database/semiproducts.txt&listt
emp=new_com-flash_results.html&template=com-flash_detail.html&output_number=1000
&0=Com-Flash


I hope I answered you question and didn't ramble too much :).

Thanks, 
Vasant.


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