Hello,
I'm a soft designer. I want to access Spartan board with JTAG interface. I do not have kwoledge about electronic.
I try to send/read informations according to TAP controller sequence.
I can read IDCODE and set the board in BYPASS mode.
When I try to send instruction with Impact (to instruction register), the instrcution is not understood.
Must I do something like initialisation before sending instruction code? How can I debug this situation without eletronic equipment ?