4.4 Extend the SRC instruction set by adding the xor command,(op- 19), which is similar to the and command, but performs the XORoperation instead of AND a. Develop the abstract RTN for the xorcommand. b. Write the concrete RTN and control signals for the xorinstruction for the 1-bus SRC microarchitecture. (Unfortunately,the SRC ALU does not have the XOR operation as one of itsprimitives, but only the operations ADD, SUB, AND, OR, SHR, SHL,NEG, NOT, C B, and INC4.)
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