Mux256to1v
From HDLBits
Create a 4-bit wide, 256-to-1 multiplexer. The 256 4-bit inputs are all packed into a single 1024-bit input vector. sel=0 should select bits in[3:0], sel=1 selects bits in[7:4], sel=2 selects bits in[11:8], etc.
Expected solution length: Around 1–5 lines.
Module Declaration
module top_module(
input [1023:0] in,
input [7:0] sel,
output [3:0] out );