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/***************************************************************************
****************************************************************************
***
***  Program File:  @(#)half_adder.v
***
****************************************************************************
****************************************************************************/

//  @(#)half_adder.v	1.2  8/4/92
//
// **************************************************************
//  half_adder -- cell model
// **************************************************************

... (truncated)
module half_adder(s,
		  c,
		  a,
		  b
		  );

    //prop CELLCLASS "LEAF"

    output s, c;
    input  a, b;

    // instantiate std cell half-adder
    JHAD1A u0 (.S(s), .CO(c), .A(a), .B(b) );

endmodule