62. Nibble Swap

Swap the high and low nibbles of an 8-bit input.

Requirements

• Module: nibble_swap_task
• Inputs: x[7:0]
• Outputs: y[7:0]
• Write a task swap_nibbles(input [7:0] xin, output [3:0] hi, output [3:0] lo) that extracts the high and low nibbles from xin.
• Keep it fully combinational.

Behaviour

• Input x[7:0]
• Output y[7:0] = {x[3:0], x[7:4]}