// Check that when timing checks are disabled (or in the case of Icarus Verilog not supported) // that the delayed reference and data signals become copies of the original reference and data signals module test; wire sig1, sig2, del_sig1, del_sig2, del_sig3, del_sig4, notifier, cond1, cond2; assign sig1 = 1'b0; assign sig2 = 1'b1; specify $setuphold(posedge sig1, negedge sig2 , 0:0:0 , 0:0:0 , notifier , cond1 , cond2 , del_sig1 , del_sig2 ) ; /* Internally the simulator does the following: assign del_sig1 = sig1; assign del_sig2 = sig2; */ $recrem(posedge sig1, negedge sig2 , 0:0:0 , 0:0:0 , notifier, cond1 , cond2 , del_sig3 , del_sig4 ); /* Internally the simulator does the following: assign del_sig3 = sig1; assign del_sig4 = sig2; */ endspecify initial begin if (del_sig1 == 1'b0 && del_sig2 == 1'b1 && del_sig3 == 1'b0 && del_sig4 == 1'b1) $display("PASSED"); else $display("FAILED"); end endmodule