80. DFF with Async Reset and Preset

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IshitaDey

November 5, 2025

Solving Approach

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Code

module dff_async_reset_preset (
    input  CLK,
    input  RST,
    input  PRE,
    input  D,
    output reg Q
);
always@(posedge CLK or posedge RST or posedge PRE) begin
    if(RST==1) begin
        Q<=1'b0;
    end
    else if(PRE==1) begin
        Q<=1'b1;
    end
    else begin
        Q<=D;
    end
end



endmodule

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