tests/3-ff/ff.v - symbiflow-arch-defs - Git at Google

 // Single flip-flip test.
 module top(input clk, input di, output do);
   always @( posedge clk )
     do <= di;
 endmodule // top
	// Single flip-flip test.
	module top(input clk, input di, output do);
	always @( posedge clk )
	do <= di;
	endmodule // top