Problem

Write an ABEL, VHDL, or Verilog program for the barrel shifter specified in Exercise.Exerc...

Write an ABEL, VHDL, or Verilog program for the barrel shifter specified in Exercise.

Exercise

A 16-bit barrel shifter is a combinational logic circuit with 16 data inputs, 16 data outputs, and 4 control inputs. The output word equals the input word, rotated by a number of bit positions specified by the control inputs. For example, if the input word equals ABCDEFGHIJKLMNOP (each letter represents one bit), and the control inputs are 0101 (5), then the output word is FGHIJKLMNOPABCDE. Design a 16-bit barrel shifter using combinational MSI parts discussed in this chapter. Your design should contain 20 or fewer ICs. Do not draw a complete schematic, but sketch and describe your design in general terms and indicate the types and total number of ICs required.

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