I have a variety of AVR modules and boards. I have a $20 JTAG that works with Studio and WinAVR. I have an Atmel ISP using USB and one using RS232. I can’t get into JTAG. Seems more trouble than it’s worth versus using printf’s for debugging. Maybe I’m a dolt. Lately, I download using the JTAG below and debug using printfs going to a PC’s serial or USB port
http://www.nkcelectronics.com/avr-jtag- … r-kit.html
Also consider the modules from ZBasic.net and OakMicros. Very nice. The ZBasic compiler is very Visual Basic-like - and for a hobby thing, it’s superb. I use it and C for various projects
PS: Why did you post the same kind of questions in the ARM forum?