trunk/Toriya/sbrom24.v

/**********************************************************-*-verilog-*-
 *
 *      DES用SBox ROM 2段
 *      $Id$
 *
 */

module sbrom24(clk5,
                           ea, eb, lna, lnb,
                           qa, qb);

        input                   clk5;

        input [0:47]    ea, eb;         // 拡大転置後の入力値
        input [0:31]    lna, lnb;       // 縮小転置後のL
        output [0:31]   qa, qb;         // 出力

`include "func_des.v"

        // RAM に喰わすアドレスなど
        wire [5:0]              ea1, ea2, ea3, ea4, ea5, ea6, ea7, ea8;
        assign                  {ea1, ea2, ea3, ea4, ea5, ea6, ea7, ea8} = sae(ea);

        wire [5:0]              eb1, eb2, eb3, eb4, eb5, eb6, eb7, eb8;
        assign                  {eb1, eb2, eb3, eb4, eb5, eb6, eb7, eb8} = sae(eb);

        wire [3:0]              la1, la2, la3, la4, la5, la6, la7, la8;
        assign                  {la1, la2, la3, la4, la5, la6, la7, la8} = lna;
        wire [3:0]              lb1, lb2, lb3, lb4, lb5, lb6, lb7, lb8;
        assign                  {lb1, lb2, lb3, lb4, lb5, lb6, lb7, lb8} = lnb;

        /*
         *      S1-S8(x4) DPROM (M4K)
         */
        wire [0:3]              qa1, qa2, qa3, qa4, qa5, qa6, qa7, qa8;
        wire [0:3]              qb1, qb2, qb3, qb4, qb5, qb6, qb7, qb8;
        s11x4 sab1(4'b0, 1'b0, {ea1, la1}, 4'b0, {eb1, lb1}, 1'b0, clk5, qa1, qb1);
        //exemplar attribute sab1 NOOPT TRUE
        s22x4 sab2(4'b0, 1'b0, {ea2, la2}, 4'b0, {eb2, lb2}, 1'b0, clk5, qa2, qb2);
        //exemplar attribute sab2 NOOPT TRUE
        s33x4 sab3(4'b0, 1'b0, {ea3, la3}, 4'b0, {eb3, lb3}, 1'b0, clk5, qa3, qb3);
        //exemplar attribute sab3 NOOPT TRUE
        s44x4 sab4(4'b0, 1'b0, {ea4, la4}, 4'b0, {eb4, lb4}, 1'b0, clk5, qa4, qb4);
        //exemplar attribute sab4 NOOPT TRUE
        s55x4 sab5(4'b0, 1'b0, {ea5, la5}, 4'b0, {eb5, lb5}, 1'b0, clk5, qa5, qb5);
        //exemplar attribute sab5 NOOPT TRUE
        s66x4 sab6(4'b0, 1'b0, {ea6, la6}, 4'b0, {eb6, lb6}, 1'b0, clk5, qa6, qb6);
        //exemplar attribute sab6 NOOPT TRUE
        s77x4 sab7(4'b0, 1'b0, {ea7, la7}, 4'b0, {eb7, lb7}, 1'b0, clk5, qa7, qb7);
        //exemplar attribute sab7 NOOPT TRUE
        s88x4 sab8(4'b0, 1'b0, {ea8, la8}, 4'b0, {eb8, lb8}, 1'b0, clk5, qa8, qb8);
        //exemplar attribute sab8 NOOPT TRUE

        /*
         *      出力結果MUX
         */
        assign                  qa = {qa1, qa2, qa3, qa4, qa5, qa6, qa7, qa8};
        assign                  qb = {qb1, qb2, qb3, qb4, qb5, qb6, qb7, qb8};

endmodule

/*
 *  Local variables:
 *  tab-width: 4
 *  End:
 */