Re: Re:[avr-gcc-list] JTAG interface

[hanzl]

First, many thanks for extended reply.

> > 3) Some commands of protocol normally found on JTAG between AVR JTAG
> > ICE and ATmega16+ are not known ...
> 
> This is the sticking point.  Some of the commands are known (Atmel publishes
> the commands for programming the chips, which makes it possible to use other
> jtag interfaces for programming), but those involved in debugging are not
> known. ...

I found some debugging commands described here:

  http://www.case2000.com/ocd.html

Would this be enough to create cheap-parport-JTAG-dongle in-PC
software version of AVR JTAG ICE?

Maybe in principle everything is known already but Olimex JTAG ICE
clone ($40 or so) is cheap enough that nobody cares to make it even
cheaper? (So it is not a question of $300 or so for the original one.)

Regards

Vaclav

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