Macraigor Raven JTAG hardware

Macraigor Raven JTAG hardware

[Shaun Jackman]

The Macraigor Raven is a JTAG debugging device that I'd like to use to
debug an ARM7 target. It requires a small proprietary program,
OCDRemote, that translates GDB-speak to some parallel port witchery.
Is there an open-source replacement for this program available
anywhere? It seems it shouldn't be terribly difficult to reverse
engineer [1] their parallel port protocol by spewing some debug output
from the Linux parallel port driver. Any chance GDB could some day use
the Raven natively?

Alternatively, who can recommend a cost effective way to debug the
ARM7 using Linux, GDB, and JTAG? I have up to about a thousand bucks
to spend on this project, but many JTAG devices cost a heck of a lot
more than that.

Cheers,
Shaun

[1] see DMCA what-nottery about reverse engineering for interoperability

Re: Macraigor Raven JTAG hardware

[Daniel Jacobowitz]

On Thu, Feb 17, 2005 at 04:45:39PM -0800, Shaun Jackman wrote:
> The Macraigor Raven is a JTAG debugging device that I'd like to use to
> debug an ARM7 target. It requires a small proprietary program,
> OCDRemote, that translates GDB-speak to some parallel port witchery.
> Is there an open-source replacement for this program available
> anywhere? It seems it shouldn't be terribly difficult to reverse
> engineer [1] their parallel port protocol by spewing some debug output
> from the Linux parallel port driver. Any chance GDB could some day use
> the Raven natively?

I don't know of any open source alternative.  It might be possible to
reverse engineer, but I'm not going to go there...

> Alternatively, who can recommend a cost effective way to debug the
> ARM7 using Linux, GDB, and JTAG? I have up to about a thousand bucks
> to spend on this project, but many JTAG devices cost a heck of a lot
> more than that.

The only JTAG device I've heard anything about is the Abatron BDI2000,
and its users swear by it.  I think it runs above your budget, though.

-- 
Daniel Jacobowitz
CodeSourcery, LLC

Re: Macraigor Raven JTAG hardware

[Soam Vasani]

Shaun Jackman wrote:
 > The Macraigor Raven is a JTAG debugging device that I'd like to use to
 > debug an ARM7 target. It requires a small proprietary program,
 > OCDRemote, that translates GDB-speak to some parallel port witchery.
 > Is there an open-source replacement for this program available
 > anywhere?

Someone's made an attempt, see
http://sourceforge.net/projects/gdbice/

 > It seems it shouldn't be terribly difficult to reverse engineer [1]
 > their parallel port protocol by spewing some debug output from the
 > Linux parallel port driver.

This might help:
http://www.arm.com/pdfs/DDI0029G_7TDMI_R3_trm.pdf

(probably the only thing you'll have to reverse engineer is the pin
configuration.)

 > Alternatively, who can recommend a cost effective way to debug the
 > ARM7 using Linux, GDB, and JTAG? I have up to about a thousand bucks
 > to spend on this project, but many JTAG devices cost a heck of a lot
 > more than that.

http://hri.sourceforge.net/tools/jtag_faq_org.html

-- 
soam

Re: Macraigor Raven JTAG hardware

[Spen]

As another possible alternative have a look at: 
www.s.netic.de/tmohr/parportpcb.html - this has source code for a arm7 gdbserver. 

Spen 

On Fri, 18 Feb 2005 11:42 , Soam Vasani sent: 

>Shaun Jackman wrote: 
> > The Macraigor Raven is a JTAG debugging device that I'd like to use to 
> > debug an ARM7 target. It requires a small proprietary program, 
> > OCDRemote, that translates GDB-speak to some parallel port witchery. 
> > Is there an open-source replacement for this program available 
> > anywhere? 
> 
>Someone's made an attempt, see 
>http://sourceforge.net/projects/gdbice/ 
> 
> > It seems it shouldn't be terribly difficult to reverse engineer [1] 
> > their parallel port protocol by spewing some debug output from the 
> > Linux parallel port driver. 
> 
>This might help: 
>http://www.arm.com/pdfs/DDI0029G_7TDMI_R3_trm.pdf 
> 
>(probably the only thing you'll have to reverse engineer is the pin 
>configuration.) 
> 
> > Alternatively, who can recommend a cost effective way to debug the 
> > ARM7 using Linux, GDB, and JTAG? I have up to about a thousand bucks 
> > to spend on this project, but many JTAG devices cost a heck of a lot 
> > more than that. 
> 
>http://hri.sourceforge.net/tools/jtag_faq_org.html 
> 
>-- 
>soam 




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