There are three different boards.

Re:Pinouts to match the TA Board -- John Broadhead
Posted by egm , May 05,1999,15:33 Post Reply  Forum

1) This board only has wires from the Xilinx chip to the edge connector.
2) This board has all of the necessary hardware to test the design along
with the Xilinx chip. It is configured to be able to run in the
edge connector or flag on its back in the normal connector.
3) This board is designed to only work on its back in the normal
connectors. Therefore, this board can use pin 17 on the Xilinx
board. It doesn't care about the edge connectors.