Negate.hdl

/**
* this chip get 16-bit bus (in) and single bit (n), and compute 16-bit output:
* if n == 0 output = in
* if n == 1 output = -in
*/

CHIP Negate {
    IN
        in[16], n;

    OUT
        out[16];

    PARTS:

    Not16( in = in, out = notIn);
    Inc16( in = notIn, out = negIN);
    Mux16( a = in, b = negIN, sel = n, out = out);

}