In UG029, 10.1 ChipScope Pro Software and Cores User Guide, The Description of "Data Same as Trigger" in the "Selecting the Data Type" section on page 85 states that the maximum data sample for a Virtex-5 device is 1,024 bits.
When I try to set this while inserting or generating my cores, I am limited to 256. What am I doing wrong?
The documentation is incorrect. The maximum data sample for all devices including Virtex-5 is 256 bits.