Confused about ATMega644 and JTAG Debugging

hi all,

Maybe someone can bring some light in this…

I want to replace in a circuit the ATMega32 with an AtMega644.

According to the datasheet this controller is pincompatible!

Currently im using the Evertool (a an AVRISP/STK500-protocol and JTAGICE compatible Programmer/JTAG debugger) for doing the JTAG debugging on the ATMega32.

Can you give me any hints if the Evertool is also able to Debug the ATMega644? Maybe it is possible to tell the AVRStudio that im using a ATMega32, but in fact im using the ATMega644?

Is this possible - do you or someone else have any expieriences concerning this topic?

What is the difference between mkII debugging device for the ATMega644 and the standard Evertool for ATMega32?

Has Atmel included some HW-Fuses that protects the ATMega644 of not beeing JTAG debugged with the Evertool?

Are there any other JTAG debugging solutions available for the ATMega644 besides the AVRStudio and mkII device?

Thanks in advance,

rain

Not sure if this applies to your Evertool but some tools do not work with controllers with 64k or more flash, eg Atmel’s Dragon won’t work with the ATMega644 (I’m using the 644 in my project but not the dragon).

Edward