[avr-chat] How to do JTAG only programming

[hubert-b]

Hi avrdude-users,

I'm trying to add support for ATmega406 to the avrdude.conf but apparently, 
this MCU does not support the "SPI Serial Instruction Programming Set", so I 
don't know what to enter in the "pgm_enable", "chip_erase", "read", "write", 
"loadpage", etc. sections.

Can someone assist me on that? I already have the "JTAG Instruction Programming 
Set" of the ATmega406, but those instructions are split into a TDI and a TDO 
part. I also have the XML-file corresponding to that MCU from AVR Studio 4.

Or am I totally wrong here and there is another way to perform JTAG-only 
programming? I should mention: I have a Atmel AVR Dragon as programming device.

Any help will be appreciated.

Kind regards,
Andreas
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