hi, i bought both spartan3 starter kit and USB2 module from digilent. i tried working with USB2 module plugged in to A1 expansion connector, and it worked well. However when using A1,the IO pins are shared with RAM, and i want to use both USB2 moodule and RAM simultaniously. Therefore i switched the board to B1 expansion and made necessary changes in the pin assignment user constraints. With the USB 2 module in B1 expantion slot, i tried both Slave/Master Serial/Parallel mode of programing through ExPort programe. I changed all jumpers as requred ( including TDO/TDI bypass). However ExPort is unable to find the scan chain in all modes. im sure the USB module connection is OK, because it is shown in the list when i try to add modules. It complaints about identifing invalid devices.
if some one knows the reason, please let me know, because im stuck with that.
Thank you CMOS