If the device family is changed for an ABEL project, the implementation processes in the process window disappear.
This will happen if the ABEL file contains test vectors.
When the target family is switched, the ABEL test vectors are incorrectly placed in the Synthesis/Implementation view and the only available processes for the ABEL source are Check Syntax and Design Utilities.
To work around this problem, do one of the following:
- Remove the ABEL source from the project and add it again.
- Right-click the ABEL module in the source window (is not appended with "_TestVector") and select "Set as Top Module".
- In ISE 10.1 or later, open the Files tab, right-click the ABEL file and select Properties... . Then set the ABEL module Association to "All" and the TestVector association to "Simulation.""