Shift left or right X25794

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.