[new 3 October 2007] We provide a user constraints file (.ucf) in the Virtex-4 Logic Tile application note directories. For example: \AN146\3.3\0\physical\ltxc4vlx200\Virtex4_EBFpgaAHBLTEx\xilinx\scripts\an146.ucf \AN151\3.3\0\physical\ltxc4vlx200\AXILTEx\xilinx\scripts\an151.ucf \AN170\3.3\0\physical\ltxc4vlx200\virtex4_pb926ejs_fpga\xilinx\scripts\an170_sync.ucf
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