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Assignment Q1: LC-3 Instruction Execution Instruction LD R1, VALUE Binary Encoding (16-bit) Bit Breakdown IR Loaded Value (Hex) 0010 001 000000101 Opcode 0010 (LD), DR=001 (R1), PCOffset9-000000101 ? ? ? ? ? ? x1241 ? x3206 ? 1001 011 001 111111 ? ? Tasks You are required to: 1. Decode each instruction based on the LC-3 instruction set and complete the last column in the table above. Provide a clear description of the function of each instruction. LC-3 Table is included in the slides. 2. Update register (any register invovled) values step by step after executing each instruction. Hints Use the LC-3 instruction set reference (Lecture X) to decode instructions accurately. ⚫ Keep track of register dependencies some instructions modify registers that are used later. Consider the effects of instructions like AND R1, RO, #0, which effectively clears the destination register. For the STR instruction, remember that the effective address is calculated as Base Register + Offset (sign-extended). Questions You are required to: 1. Interpret each instruction based on the LC-3 instruction set. Complete the last column in the Table above. 2. Update the register values after each instruction execution. 3. Write down the register values and memory changes after all instructions have been processed. Note: show all detailed steps for 2) and 3). Hints • Pay attention to the initial values of the registers. • Remember that some instructions may change the values of the registers used by subsequent instructions. Consider the effects of instructions like AND R1, RO, #0 which effectively clears the destination register. ⚫ The STR instruction's offset is added to the base register to determine the final address where the value is stored.

Assignment Q1: LC-3 Instruction Execution Instruction LD R1, VALUE Binary Encoding (16-bit) Bit Breakdown IR Loaded Value (Hex) 0010 001 000000101 Opcode 0010 (LD), DR=001 (R1), PCOffset9-000000101 ? ? ? ? ? ? x1241 ? x3206 ? 1001 011 001 111111 ? ? Tasks You are required to: 1. Decode each instruction based on the LC-3 instruction set and complete the last column in the table above. Provide a clear description of the function of each instruction. LC-3 Table is included in the slides. 2. Update register (any register invovled) values step by step after executing each instruction. Hints Use the LC-3 instruction set reference (Lecture X) to decode instructions accurately. ⚫ Keep track of register dependencies some instructions modify registers that are used later. Consider the effects of instructions like AND R1, RO, #0, which effectively clears the destination register. For the STR instruction, remember that the effective address is calculated as Base Register + Offset (sign-extended). Questions You are required to: 1. Interpret each instruction based on the LC-3 instruction set. Complete the last column in the Table above. 2. Update the register values after each instruction execution. 3. Write down the register values and memory changes after all instructions have been processed. Note: show all detailed steps for 2) and 3). Hints • Pay attention to the initial values of the registers. • Remember that some instructions may change the values of the registers used by subsequent instructions. Consider the effects of instructions like AND R1, RO, #0 which effectively clears the destination register. ⚫ The STR instruction's offset is added to the base register to determine the final address where the value is stored.

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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Assignment Q1: LC-3 Instruction Execution Instruction LD R1, VALUE Binary Encoding (16-bit) Bit Breakdown IR Loaded Value (Hex) 0010 001 000000101 Opcode 0010 (LD), DR=001 (R1), PCOffset9-000000101 ? ? ? ? ? ? x1241 ? x3206 ? 1001 011 001 111111 ? ? Tasks You are required to: 1. Decode each instruction based on the LC-3 instruction set and complete the last column in the table above. Provide a clear description of the function of each instruction. LC-3 Table is included in the slides. 2. Update register (any register invovled) values step by step after executing each instruction. Hints Use the LC-3 instruction set reference (Lecture X) to decode instructions accurately. ⚫ Keep track of register dependencies some instructions modify registers that are used later. Consider the effects of instructions like AND R1, RO, #0, which effectively clears the destination register. For the STR instruction, remember that the effective address is calculated as Base Register + Offset (sign-extended). Questions You are required to: 1. Interpret each instruction based on the LC-3 instruction set. Complete the last column in the Table above. 2. Update the register values after each instruction execution. 3. Write down the register values and memory changes after all instructions have been processed. Note: show all detailed steps for 2) and 3). Hints • Pay attention to the initial values of the registers. • Remember that some instructions may change the values of the registers used by subsequent instructions. Consider the effects of instructions like AND R1, RO, #0 which effectively clears the destination register. ⚫ The STR instruction's offset is added to the base register to determine the final address where the value is stored.
Transcribed Image Text:Assignment Q1: LC-3 Instruction Execution Instruction LD R1, VALUE Binary Encoding (16-bit) Bit Breakdown IR Loaded Value (Hex) 0010 001 000000101 Opcode 0010 (LD), DR=001 (R1), PCOffset9-000000101 ? ? ? ? ? ? x1241 ? x3206 ? 1001 011 001 111111 ? ? Tasks You are required to: 1. Decode each instruction based on the LC-3 instruction set and complete the last column in the table above. Provide a clear description of the function of each instruction. LC-3 Table is included in the slides. 2. Update register (any register invovled) values step by step after executing each instruction. Hints Use the LC-3 instruction set reference (Lecture X) to decode instructions accurately. ⚫ Keep track of register dependencies some instructions modify registers that are used later. Consider the effects of instructions like AND R1, RO, #0, which effectively clears the destination register. For the STR instruction, remember that the effective address is calculated as Base Register + Offset (sign-extended). Questions You are required to: 1. Interpret each instruction based on the LC-3 instruction set. Complete the last column in the Table above. 2. Update the register values after each instruction execution. 3. Write down the register values and memory changes after all instructions have been processed. Note: show all detailed steps for 2) and 3). Hints • Pay attention to the initial values of the registers. • Remember that some instructions may change the values of the registers used by subsequent instructions. Consider the effects of instructions like AND R1, RO, #0 which effectively clears the destination register. ⚫ The STR instruction's offset is added to the base register to determine the final address where the value is stored.
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