By default, not all of the Xilinx Online Books are installed. By default, only the Foundation Quickstart Guide and Foundation User Guide, along with the Dynatext Browser, are installed.
Note that by default with the Foundation BASE packages, NONE of the Online books are installed by default. See (Xilinx Solution 3364) for more information.
解决方案
To install more of the Online Books than what is installed by default, you must specify this via the Installer of the Foundation Design Implementation Tools.
* Run the setup program from the Foundation Design Implementation Tools CDROM. * Follow the instructions until you get to the "Select Software Components to Install" window. * Highlight the Online Documentation (18 sub-components) choice. * Click the "Change..." button. * Check the box(es) next to any of the books you wish to install. * Click "Continue", and continue with the rest of the install as usual.