summaryrefslogtreecommitdiff
path: root/projects/01/Mux4Way16.hdl
blob: b6be9680358462041d5120e47edace8419c9753c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/01/Mux4Way16.hdl

/**
 * 4-way 16-bit multiplexor:
 * out = a if sel == 00
 *       b if sel == 01
 *       c if sel == 10
 *       d if sel == 11
 */

CHIP Mux4Way16 {
    IN a[16], b[16], c[16], d[16], sel[2];
    OUT out[16];

    PARTS:
    Mux16(a=a, b=b, sel=sel[0], out=ab);
    Mux16(a=c, b=d, sel=sel[0], out=cd);
    Mux16(a=ab, b=cd, sel=sel[1], out=out);
}