I try to use the JTAGMKII debug interface on ATMEGA128L-8AI (2,7V-5,5V version)
Clock: Ext cristal 3,864MHz.
I tryed different Target Clock freq and Com port settings with no effect.
The program is loading, but when running with the JTAGMKII connected the program restarts frequently, there are no flags set in MCUCSR. If i remove the JTAG itf the program runs without a problem.
I made a small testprogram to toggle one output.
It happens also that in AVRSTUDIO the program is stopped, but the output keeps toggling.
I have the impression that there is a compatibilitie error between ATMEGA128L-8AI and JTAGMKII.
In AVR Studio you kan select serveral ATMEGA128 Versions.
ATMEGA128, ATMEGA1280, ATMEGA1281, ATMEGA1284P, ATMEGA128A.
What is the difference between these versions?
I use also a ATMEGA128-16AU, with this processor there is no problem using the JTAGMKII.
With an ATMEGA162, also a 2,5-5V version, there is no problem using the JTAGMKII.
Has someone expierece with ATMEGA128L-8AI togheter with the JTAGMKII debug interface?
Thanks in advance,