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When the current operation is "Load AC from mernory," what should be done in IR and AC, respectively?

When the current operation is "Load AC from mernory," what should be done in IR and AC, respectively?

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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**Question:** When the current operation is "Load AC from memory," what should be done in IR and AC, respectively? **Diagram Explanation:** The diagram shows two steps involving memory operations and CPU register updates: 1. **Step 1:** - **Memory:** - Address 300: 1940 - Address 301: 5941 - Address 302: 2941 - Address 940: 0003 - Address 941: 0002 - **CPU Registers:** - PC (Program Counter): 300 - AC (Accumulator): - IR (Instruction Register): 2. **Step 2:** - **Memory:** - Address 300: 1940 - Address 301: 5941 - Address 302: 2941 - Address 940: 0003 - Address 941: 0002 - **CPU Registers:** - PC: 301 - AC: - IR: **Opcode and Operand:** A graphical representation shows the division: - 0 to 3 bits: Opcode - 3 to 15 bits: Operand **Answer Choices:** - ⬜ IR: 2941, AC: 0003 - ⬜ IR: 1940, AC: 0003 - ⬜ IR: 1940, AC: 0002 - ⬜ IR: 5941, AC: 0002
Transcribed Image Text:**Question:** When the current operation is "Load AC from memory," what should be done in IR and AC, respectively? **Diagram Explanation:** The diagram shows two steps involving memory operations and CPU register updates: 1. **Step 1:** - **Memory:** - Address 300: 1940 - Address 301: 5941 - Address 302: 2941 - Address 940: 0003 - Address 941: 0002 - **CPU Registers:** - PC (Program Counter): 300 - AC (Accumulator): - IR (Instruction Register): 2. **Step 2:** - **Memory:** - Address 300: 1940 - Address 301: 5941 - Address 302: 2941 - Address 940: 0003 - Address 941: 0002 - **CPU Registers:** - PC: 301 - AC: - IR: **Opcode and Operand:** A graphical representation shows the division: - 0 to 3 bits: Opcode - 3 to 15 bits: Operand **Answer Choices:** - ⬜ IR: 2941, AC: 0003 - ⬜ IR: 1940, AC: 0003 - ⬜ IR: 1940, AC: 0002 - ⬜ IR: 5941, AC: 0002
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