TinyMicro ALU X67117

Design the ALU of the TinyMicro. The ALU has two operands, a and b, and one result c. The operation of the ALU is determined by the 2-bit control signals Op as follows:

• Op=00, c=a+b.
• Op=01, c=a−b.
• Op=10, c=b−a.
• Op=11, c=a.

Design a parametrized N-bit ALU with a default value of N=8.

Specification

module ALU(a, b, Op, c); parameter N=8; input [N-1:0] a, b; input [1:0] Op; output [N-1:0] c;

Input

• a and b are the two input operands.
• Op indicates the type of operation.

Output

• c is the result of the operation.