Shift left or right

Design a circuit that shifts an $N$ -bus one position to the left or to the right. The direction of the shift is determined by a control signal called LR. When LR=0, the shift must be to the left. When LR=1, the shift must be to the right. $N$ must be a parameter of the circuit with default value 8.

Specification

module shift_left_right(in, LR, out);
    parameter N=8;
    input [N-1:0] in;
    input LR;
    output [N-1:0] out;

Input

in is the $N$ -bit input bus.
LR is the control signal that determines the direction of the shift.

Output

out is the value of the bus shifted one position to the left or right.

Problem information

Author: Jordi Cortadella

Generation: 2026-02-03T12:18:58.011Z