Mux8Way16 Chip
Abstraction and Implementation of 8-way 16-bit Multiplexor Chip in Hardware Design Language and Java™.
Mux8Way16 (8-way 16-bit Multiplexor) Chip
An 8-way 16-bit Multiplexor chip outputs one of the given eight 16-bit inputs, which is specified by selector bit.
Chip name: Mux8Way16
Inputs: a[16],b[16],c[16],d[16],e[16],f[16],g[16],h[16],
sel[3]
Outputs: out[16]
Function: If sel=000 then out=a
else if sel=001 then out=b
else if sel=010 then out=c
...
else if sel=111 then out=h
Comment: The assignment operations mentioned above are all
16-bit. For example, "out=a" means "for i=0..15
out[i]=a[i]".
Implementation of Mux8Way16 Chip in HDL
The function in the above abstraction can help in the implementation of Mux8Way16 Chip.
CHIP Mux8Way16 {
IN a[16], b[16], c[16], d[16],
e[16], f[16], g[16], h[16],
sel[3];
OUT out[16];
PARTS:
Mux16(a=a, b=b, c=c, d=d, sel=sel[0..1], out=abcd);
Mux16(a=e, b=f, c=g, d=h, sel=sel[0..1], out=efgh);
Mux16(a=abcd, b=efgh, sel=sel[2], out=out);
}Implementation of Mux8Way16 Chip in Java™
Similar to the Implementation in HDL
package CombChips;
import Misc.Convert;
class Mux8Way16_Gate extends Mux4Way16_Gate {
protected static int[] Mux8Way16(int[] a, int[] b, int[] c, int[] d, int[] e, int[] f, int[] g, int[] h, int[] sel) {
int[] arr_a = Convert.Arrayto16(a);
int[] arr_b = Convert.Arrayto16(b);
int[] arr_c = Convert.Arrayto16(c);
int[] arr_d = Convert.Arrayto16(d);
int[] arr_e = Convert.Arrayto16(a);
int[] arr_f = Convert.Arrayto16(b);
int[] arr_g = Convert.Arrayto16(c);
int[] arr_h = Convert.Arrayto16(d);
int[] arr_sel = new int[3];
System.arraycopy(sel, 0, arr_sel, 0, arr_sel.length);
int[] subarr_sel = new int[2];
System.arraycopy(sel, 1, subarr_sel, 0, subarr_sel.length);
int[] temp1 = Mux4Way16(arr_a, arr_b, arr_c, arr_d, subarr_sel);
int[] temp2 = Mux4Way16(arr_e, arr_f, arr_g, arr_h, subarr_sel);
int[] out = Mux16(temp1, temp2, arr_sel[0]);
return out;
}
}Last updated