| CAUSE: | You turned on the Fast Output Register or Fast Input Register logic option for the specified register. However, the Fitter cannot implement not gate push-back by using the preset signal on the register as a clear signal because the I/O registers for the target device you specified for the current design does not have a preset signal. |
| ACTION: | Turn off the Fast Input Register or Fast Output Register options for the specified register, remove the clear signal from the specified register, or specify an APEX 20KE device, which allows a preset signal to be implemented in an I/O cell using not gate push-back. |
See also:
Assigning Options for Individual Nodes & Entities
Overview: Making Assignments
Specifying the Device Family & Device for Compilation
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