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I'm in the UK, using the Keil C51 toolset, and the Triscend E5. Being in Europe (or, should I say, outside the USA?) I have to use a "dongle" (hardware key) with the Keil tools. Far from being transparent, the Keil dongle seems to significantly mess-up the communication bewteen the parallel port and the Triscend JTAG. Keil's knowledge base article http://www.keil.com/support/docs/1788.htm suggests that this may not be an uncommon experience. Has anyone else experienced problems with the Keil dongle - particularly in connection with the Triscend E5? Any tips?
We had the same kind of problems with a Dell laptop and data I-O chiplab programmer. The dongle short circuits pins 17 upto 25 (as GND pins) but Dell uses some of them to see if a external drive is connected. So you should wire these pins around the dongle. you should keep ONE GND connection in place, obviously. Good luck- Alex.