Dragon or JTAGICEMkII?

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I need to buy programmer with JTAG support for modern AVR processors. Till now I were using JTAGICE, but new devices are unsupported. Dragon is cheap, JTAGICEMkII is more expensive. I've compared both, and it seems that list of supported devices are similar, after the limitation to 32kB of Dragon vanished both devices seems to perform equally. So what is the difference? Should I buy the cheap Dragon, of JTAGICEMkII?

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I'd start with a Dragon , and an Externally powered USB-Hub , to connect the Dragon to.

The MKII is (afaik) faster in debugging , better protected (driver circuit) , and can do PDI on all Xmegas.

But a lot of users here are quite happy with their Dragons , and the new HW revision isn't as sensitive wit regard to the USB power as the old one (witch blew up if the USB port couldn't deliver the ?? mA needed to power it).

If you are a hobbyist go for Dragon , for pro use where it has a vital role go for a MKII

/Bingo

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One of the biggest "pro" points for the real ICE is that it's got
an isolated case, so you can almost carelessly place it somwhere
on your test setup without risking a shortcut. For the Dragon,
you'd have to create your own case. Don't be tempted to just make
the JTAG cable longer so you could place the Dragon further away:
it's likely to fail then, or at least requires a drastically
reduced JTAG clock frequency due to crosstalk and/or signal
reflection effects.

Jörg Wunsch

Please don't send me PMs, use email if you want to approach me personally.

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Yes, as mentioned above, only the security is the main difference apart from PDI for XMEGA(ofcourse).

But better understanding of the tool is good enough to start with AVRDRAGON. Please read the details given in the link below to understand better:

http://www.aplomb.nl/TechStuff/D...

Last but not least.... READ THE AVR STUDIO HELP for updated informations on the tool.