Yes. The SP Duo uses Atmel standard and /MR should be connected to the CPU reset. On Ethernut it is connected to the MR input of the reset controller MIC2775. Harald At 21:38 17.02.2006 +0200, you wrote: >TCK 1 2 GND >TDO 3 4 VCC >TMS 5 6 /MR.........connected to the micro reset pin?? >VCC 7 8 NoConnect >TDI 9 10 GND