AVR-Chat

----Original Message----
From: AVR-Chat@yahoogroups.com
[mailto:AVR-Chat@yahoogroups.com] On Behalf Of
wagnerj@proaxis.com Sent: 05 January 2011 00:15 To:
AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Re:
Project status report and question ... 

> Agree, but....
> 
> I think this is an inherent limit due to JTAG debugging.
> You don't get 
> history information out of JTAG. You just get the current
> state at the 
> breakpoint. The "alternative" would be single-step
> operation, which would 
> hardly be "real-time", due to the less than speedy
> traffic on the JTAG 
> link.
> 

I know we discussed ARM-Cortex M3 vs. AVR mega when you were earlier in this project, and Chuck decided that AVR mega was fine for what he was doing. However, Cortex M3 can do this via JTAG as the processor has built in hardware to do it - using with Rowley Crossworks you can get real time procedure call stack, real time variable display, monitor the ram and processor registers, and all sorts of goodies. 

Just for future reference!!

-- 
Tim Mitchell