When I use CseJTAG and the CseJtag_shiftDeviceDR, the last bit shifted out is always 0. This happens when I am using a Platform Cable USB.
There is an issue with using a Platform Cable USB with the fast read option enabled in CSE. The problem is that when you perform a shift operation in read only mode, and your tdi buffer is a 0, it will enable a "fast read" mode in CommProxy. This causes the last bit shifted out to be a 0 for each shift. When you do not use a fast read, the correct data is returned. The work-around is not to enable the "fast read". This issue will be resolved in ChipScope Pro 10.1 Service Pack 3.