Create and simulate a Verilog description for an 8-bit shifter that can shift or rotate left or right by 0, 1, 2, or 3 bit positions. Implement the shifter on your Blackboard, using eight slide switches for shifter input, eight LEDs for outputs, and the four remaining slide switches to select shifter function. Two switches will be used for shift amount, one for direction, and one for shift/rotate selection. When shifting, use a pushbutton to define the fill input. Verify the shifter works correctly on your board.