Re: DI-614+ rev A - deal....

Hello there

Scott Serr wrote:
> I'm only familiar with the USR 2450.  How does speed/performance/ram
> compare on these boxes?  Sorry for my ignorance, but do you flash the
> image with a linear memory card like my USR 2450s?  I think I like the
> skill to do much more.  I hear JTAG this and that in the mailing list
> without really understanding what you guys are doing. (you understand my
> hw hacking skill better now)

I'm working with ppl from hri.sf.net project. it's not
samsung ARM based but JTAG is similar, there, and I can
tell you the following

buy your first one. just US$35 at http://az-electronics.com/item9.htm
make one is easy but is also time consumming. in my opinion,
it isn't worth the trouble just to make one adapter

get the jtag programmer software, like openwince or other.

then you can put the JTAG adapter on your parallell port,
hook in on the JTAG connector on the board and start reading
and writing the flash around

one thing the hardware we're working with has is a boot loader
capable of rewrite the flash. I heard U-BOOT can do that, too,
but we didn't get to this part, yet (replace the boot loader)

reflash U-BOOT in a similar way we upgrade router firmware
would easy things a lot (i.e. on WL11000 would put the SRAM
card need totally off!). think network boot, tftp, reflash
on-the-fly etc.

I have one samsung AP laying around but I was hoping ppl from
that hacking parties would make a nice quick-start howto on
reading/reflash the units so I could help on the area I know
more (ramdisk mounting and loading). the advantage of this one
is that it already have an RS232C connector

hope this info helps at least a little :-)

Cheers
!3runo
from Brazil

P.S. doing a serial level shifter isn't difficult, too, but
again it is not worth the trouble to do just one unit. it would
be good if any could do a bunch of them and put for sale.
we have a level shifter design on http://hri.sf.net/tools/
or you could use this one from (search Serial Console)
http://melbourne.wireless.vic.asn.au/wiki/?minitar
(it's good to note that there are two types of level shifters,
for 5V and 3.3V. they're not interchangeable and are hardware
dependent)