AVR-Chat

> I have been using DW with the Dragon for about 18 months now,
> it has been working very well. I have only worked with 5V supplies
> though and ALWAYS a 4K7 pull up resistor in the reset line, with
> clock ranging from internal 1MHz to crystal 14MHz.

In my case, I'm talking to an STK-500 board, with no other "stuff" on
the chip, just the bare minimum.
Chip is running on internal RC clock.

> I must admit that it is not the most solid of debugging environments
> but it does work. At times I need to unplug the Dragon and restart
> Studio but rarely.

Hmm..

>
> As far as the wrong values in the registers, is the list file correct
> or is something happening at assembly time?

No, the lst is right, it's just NOPing some instructions.
I've not yet caught it loading anything other than what I said, or
doing the wrong instruction, it just looks like the instruction was a
nop instead of what I asked for.

> With the breakpoint issue, I always do a "build and run" every time I
> make the smallest chance. New code gets uploaded to the chip and any
> old set breakpoints get cleared, at times some cannot be set in the
> original location but they get highlighted and you get asked to remove
> them which I do. Remember that breakpoints do in fact change memory
> locations, (they are placed in memory with DW not hardware like JTAG)
> so it is useful to reload the code and overwrite them.

Right, same here.  I've had long standing issues in all the debug
platforms with what I originally called "ghostpoints".
Lotsa debugging happens, many breakpoints get set/cleared etc.
Clear all breakpoints, uninstall studio, use a different chip,
reinstall studio, start debugging again, and suddenly when you should
have been running right through, you're sitting breakpointed at a
location where there's no breakpoint, but it IS one that you'd used
before.


> Hang in there, I have done about a dozen or more project with DW
> and I love it. I would prefer if all chips had DW instead of JTAG
> as one does not waste any pins. It WILL get better :-)

That's just about the only direction it CAN go in from my experience.