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Remember the Boolean expressions for the flags. Use them to solve this problem. • negative = out[31] • zero = (out[31] + out[30] + .. + out[1] + out[0])' • overflow = c_out[31] XOR c_out[30] Also remember that control[0] controls the adder_subtractor in the ALU. Overflow Zero Negative control out= 32 A 000 undefined 001 undefined 010 A + B 32 out 011 А - В 100 A AND B 32 101 A OR B control 110 A NOR B 3 111 A XOR B

Remember the Boolean expressions for the flags. Use them to solve this problem. • negative = out[31] • zero = (out[31] + out[30] + .. + out[1] + out[0])' • overflow = c_out[31] XOR c_out[30] Also remember that control[0] controls the adder_subtractor in the ALU. Overflow Zero Negative control out= 32 A 000 undefined 001 undefined 010 A + B 32 out 011 А - В 100 A AND B 32 101 A OR B control 110 A NOR B 3 111 A XOR B

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Remember the Boolean expressions for the flags. Use them to solve this problem. • negative = out[31] • zero = (out[31] + out[30] + • overflow = c_out[31] XOR c_out[30] ... + out[1] + out[0])' Also remember that control[0] controls the adder_subtractor in the ALU. control out= Overflow + Zero - Negative 32 000 undefined 001 undefined 010 A + B 32 out 011 А — В 100 A AND B 101 A OR B 32 110 A NOR B control 111 А ХOR B For the ALU defined above, determine the values of the overflow, negative, and zero flags for the following values of A, B, and control. control = 011 A = Oxa999c26f B = Oxd01ea86e Overflow = Negative = Zero = 3.
Transcribed Image Text:Remember the Boolean expressions for the flags. Use them to solve this problem. • negative = out[31] • zero = (out[31] + out[30] + • overflow = c_out[31] XOR c_out[30] ... + out[1] + out[0])' Also remember that control[0] controls the adder_subtractor in the ALU. control out= Overflow + Zero - Negative 32 000 undefined 001 undefined 010 A + B 32 out 011 А — В 100 A AND B 101 A OR B 32 110 A NOR B control 111 А ХOR B For the ALU defined above, determine the values of the overflow, negative, and zero flags for the following values of A, B, and control. control = 011 A = Oxa999c26f B = Oxd01ea86e Overflow = Negative = Zero = 3.
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