AVR-Chat

--- In AVR-Chat@yahoogroups.com, "Mike Murphree" <mike@t...> wrote:

> As a FPGA designer, this is not
> surprising...  One of the JTAG
> signals *is* a clock ...

That's true, but one of the signals of the other in-system 
programming interface (MOSI/MISO/SCK) is a clock too, so I don't 
think it's quite that simple.

> Looks good to me...  I could
> use both of these about now.

If you're serious, Mike, perhaps you'd like to contact me offline. I 
have boards for two more prototypes (as in the photo with no solder 
mask or silkscreen). If you'd be OK with a prototype JTAG-ICE (which 
has no errata) I'd throw in the Butterfly Carrier for free (which has 
two minor errata).

> Besides AVR Studio is there any other software (i.e. GDB) that
> supports JTAG debugging now on the AVR?

Yes. I quote from the WinAVR readme file: "AVaRICE is a program for 
interfacing the Atmel JTAG ICE to GDB and users can debug their AVR. 
Use in conjunction with GDB." This probably works on Linux and Mac 
platforms too. Mind you, I haven't tried it, as AVR Studio seems 
pretty good to me. Building with WinAVR and debugging on AVR Studio 
is much more "seamless" than you'd think.

Graham.