When I use 7.1i iMPACT to generate my JTAG programming files for a target chain containing a Virtex-4 device, the SVF, XSVF, or ACE files that are generated do not configure the target Virtex-4 FPGA.
- TDO mismatch errors occur. (For SystemACE CF applications, this causes the ERRLED to light.)
This problem is fixed in 7.1i Service Pack 4.
A patch is available for 7.1i Service Pack 3: