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The control signal ALUSPC' controls the multiplexor whose output goes into the ALU. The inputs to this multiplexor are the 'Read Data 2' from the 'Register' block and the 32-bit wide sign-extended offset from the instruction. If the instruction is a 'load word' (Iw), which of these two inputs will this control signal propagate to the multiplexor output and hence to the ALU input? Choose the best answer. O Since the command is a lw, the 'Read Data 2' needs to be propagated to the ALU O Since the command is a lw, the offset needs to be propagated to the ALU This is a trick question. There is no need for the sign-extended offset to be input to the ALU as it only gets data from the registers O Since this is a lIw instruction, the ALU does not come into the picture at all as this datapath goes directly to the Data Memory bypassing the ALU. This is a 'dont-care' situation

The control signal ALUSPC' controls the multiplexor whose output goes into the ALU. The inputs to this multiplexor are the 'Read Data 2' from the 'Register' block and the 32-bit wide sign-extended offset from the instruction. If the instruction is a 'load word' (Iw), which of these two inputs will this control signal propagate to the multiplexor output and hence to the ALU input? Choose the best answer. O Since the command is a lw, the 'Read Data 2' needs to be propagated to the ALU O Since the command is a lw, the offset needs to be propagated to the ALU This is a trick question. There is no need for the sign-extended offset to be input to the ALU as it only gets data from the registers O Since this is a lIw instruction, the ALU does not come into the picture at all as this datapath goes directly to the Data Memory bypassing the ALU. This is a 'dont-care' situation

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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The control signal 'ALUSrc' controls the multiplexor whose output goes into the ALU. The inputs to this multiplexor are the 'Read Data 2' from the 'Register' block and the 32-bit wide sign-extended offset from the instruction. If the instruction is a 'load word' (Iw), which of these two inputs will this control signal propagate to the multiplexor output and hence to the ALU input? Choose the best answer. Since the command is a lw, the 'Read Data 2' needs to be propagated to the ALU Since the command is a lw, the offset needs to be propagated to the ALU O This is a trick question. There is no need for the sign-extended offset to be input to the ALU as it only gets data from the registers Since this is a lw instruction, the ALU does not come into the picture at all as this datapath goes directly to the Data Memory bypassing the ALU. This is a 'dont-care' situation
Transcribed Image Text:The control signal 'ALUSrc' controls the multiplexor whose output goes into the ALU. The inputs to this multiplexor are the 'Read Data 2' from the 'Register' block and the 32-bit wide sign-extended offset from the instruction. If the instruction is a 'load word' (Iw), which of these two inputs will this control signal propagate to the multiplexor output and hence to the ALU input? Choose the best answer. Since the command is a lw, the 'Read Data 2' needs to be propagated to the ALU Since the command is a lw, the offset needs to be propagated to the ALU O This is a trick question. There is no need for the sign-extended offset to be input to the ALU as it only gets data from the registers Since this is a lw instruction, the ALU does not come into the picture at all as this datapath goes directly to the Data Memory bypassing the ALU. This is a 'dont-care' situation
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