EDA Interfaces

Example of More Input Pins than EDIF Input Ports

In this example, the active-low PRN pin of the Quartus® II DFF primitive must be driven by VCC to become inactive. The placeholder is the global high or global low signal defined by the EDA tool.

BEGIN
   FUNCTION     dff	(CLRN, CLK, D, PRN)
      RETURNS		(Q)
   FUNCTION     "LS174" ("-CL", "CLOCK", "D<0>", "VCC")
      RETURN            ("Q<0>")
END


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