You are asked to find the actual value that will be in the accumulator, AC, after executing each instruction in each mode, and fill in the table below: Note that for each addressing mode the value of AC is initially 500, and the execution of the second instruction depends on the previous one.

You are asked to find the actual value that will be in the accumulator, AC, after executing each instruction in each mode, and fill in the table below: Note that for each addressing mode the value of AC is initially 500, and the execution of the second instruction depends on the previous one.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter4: Processor Technology And Architecture

Section: Chapter Questions

Problem 15VE: A(n) ________________ instruction always alters the instruction execution sequence. A(n)...

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Question

I want to solve this in detail

Given the below piece of MARIE's code:
Add 200
Subt 100
You are asked to find the actual value that will be in the accumulator, AC, after executing
each instruction in each mode, and fill in the table below:
Note that for each addressing mode the value of AC is initially 500, and the execution of the
second instruction depends on the previous one.
100
200
...
200
400
R1
Value in AC after
Add 200
200
Value in AC after
Mode
...
300
600
Subt 100
...
Indexed
400
300
Direct
500
100
Indirect
...
600
400
Immediate
...
700
300
...
1000
300

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