I am interested in starting a new project with the ATmega128 and/or ATmega64 chip. I am not clear as to what tools support these devices. I understand that the new Studio 4 and the ICE50 can be used, but the ICE50 is $3500. I don' t pay more than that for my DSP tools and the micro is only on my board for support. This a DSP board, not an MCU board. Plus I understand that the new ICE50 has the typical new tool bugs (or worse).
I belive I can use the JTAG-ICE, but do I still have to use Studio 4? I understand that it is still pretty buggy. Is there an existing tool that supports the ATmega128/64 that is a little more proven?