/**

* Andrew Plaza

* Dr. Bishop

* Various Muxes

*

*/

​

// 1-bit select, 2 1-byte inputs, 1 1-byte output

module twoOneMux(select, in, out);

    input[1:0][7:0] in; // 2 byte inputs

    input select;

    output[7:0] out; // one byte output

    assign out = in[select];

endmodule

​

​

// two bit select, 4 1-byte inputs, 1 1-byte output

module fourOneMux(select, in, out);

    input[3:0][7:0] in;

    input[1:0] select;

    output[7:0] out;

​

    wire[1:0][7:0] level0;

    twoOneMux FIRST(select[0], in[1:0], level0[0]);

    twoOneMux SECOND(select[0], in[3:2], level0[1]);

​

    twoOneMux OUT(select[1], level0, out);

​

endmodule

​

// three bit select, 8 1-byte inputs, 1 1-byte output

module eightOneMux(select, in, out);

    input[7:0][7:0] in; // 8 1-byte inputs

    input[2:0] select; // 3 bit select

    output[7:0] out; // 1 1-byte output

​

    wire[1:0][7:0] first;

​

    // Level 0

    fourOneMux LEVEL0_0(select[1:0], in[3:0], first[0]);

    fourOneMux LEVEL0_1(select[1:0], in[7:4], first[1]);

​

    // Level 1

    twoOneMux LEVEL1_0(select[2], first, out);

endmodule