$adff#
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Simulation model (Verilog)#
module \$adff (CLK, ARST, D, Q);
parameter WIDTH = 0;
parameter CLK_POLARITY = 1'b1;
parameter ARST_POLARITY = 1'b1;
parameter ARST_VALUE = 0;
input CLK, ARST;
input [WIDTH-1:0] D;
output reg [WIDTH-1:0] Q;
wire pos_clk = CLK == CLK_POLARITY;
wire pos_arst = ARST == ARST_POLARITY;
always @(posedge pos_clk, posedge pos_arst) begin
if (pos_arst)
Q <= ARST_VALUE;
else
Q <= D;
end
endmodule
Note
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help $adff
.