Istype 'keep' Do Not Collapse Signal Syntax signal_name [,signal_name] [PIN|NODE] ISTYPE 'keep' ; Use Signal attribute 'keep' indicates that the combinational node should not be collapsed (removed) by either the ABEL compiler or the Xilinx CPLD fitter. See Also 'collapse'
Signal attribute 'keep' indicates that the combinational node should not be collapsed (removed) by either the ABEL compiler or the Xilinx CPLD fitter.
'collapse'