At 08:22 AM 29/11/2011, you wrote: >Out of curiosity, how do you tell it is a Mk1 JTAG? I can't tell for sure but it's a BIG gut feeling. Yes I have one of those. They are not claiming compatibility one way or the other and there is no list of supported devices on their website as far as I can see. Non existent tech specs. JTAG Mk1 design was\is readily available and it uses just a Mega163 or similar, JTAG Mk2 design has never been made public. The only technical details given on that website is : Working voltage: 3~5V The Dragon will work with Target Voltage Range 1.8 - 5.5 V and JTAG Mk2 Target operating voltage range of 1.6V to 5.5V Both of the above support JTAG, DW and some\all PDI devices. No mention of the other interfaces with the DealExtreme type. I would really be interested to find out if I'm wrong with this one so please post your experiences with it when you get it. Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Website http://www.ampertronics.com.au *Electronic Design * Custom Products * Contract Assembly ******************************************************** --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .