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Consider the figure and the hypothetical machine it represents. Given that before any action takes place, AC is 0000, PC is 104, IR is empty and the memory locations 104, 205, 206 and 207 contain the values 1206, 2000, 0340 and 1111 respectively. Answer the following: What value will be contained in AC and IR after the fetch stage? What values will be contained in AC, IR and PC after the execute stage?

Consider the figure and the hypothetical machine it represents. Given that before any action takes place, AC is 0000, PC is 104, IR is empty and the memory locations 104, 205, 206 and 207 contain the values 1206, 2000, 0340 and 1111 respectively. Answer the following: What value will be contained in AC and IR after the fetch stage? What values will be contained in AC, IR and PC after the execute stage?

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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Consider the figure and the hypothetical machine it represents. Given that before any action takes place, AC is 0000, PC is 104, IR is empty and the
memory locations 104, 205, 206 and 207 contain the values 1206, 2000, 0340 and
1111 respectively. Answer the following:
What value will be contained in AC and IR after the fetch stage?
What values will be contained in AC, IR and PC after the execute stage?

3 4 15 Opcode Address (a) Instruction format 0 1 15 S Magnitude (b) Integer format Program counter (PC) = Address of instruction Instruction register (IR) = Instruction being executed Accumulator (AC) = Temporary storage (c) Internal CPU registers 0001 = Load AC from memory 0010 = Store AC to memory 0101 = Add to AC from memory (d) Partial list of opcodes
Transcribed Image Text:3 4 15 Opcode Address (a) Instruction format 0 1 15 S Magnitude (b) Integer format Program counter (PC) = Address of instruction Instruction register (IR) = Instruction being executed Accumulator (AC) = Temporary storage (c) Internal CPU registers 0001 = Load AC from memory 0010 = Store AC to memory 0101 = Add to AC from memory (d) Partial list of opcodes
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