Suppose we have the instruction Load 1200. Given memory as follows: Memory 1000 1100 1200 800 Copyright © 2016-2021 by Berrached-All Rights Reserved. What would be loaded into the AC if the addressing mode for the operation is indirect addressing? 800 900 900 1000 500 600

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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**Memory Addressing Problem Example**

**Question 18**

**Problem Statement:**

Suppose we have the instruction `Load 1200`. Given memory as follows:

| Address | Value  |
|---------|--------|
| 800     | 900    |
| 900     | 1000   |
| 1000    | 500    |
| 1100    | 600    |
| 1200    | 800    |

**Question:**

What would be loaded into the AC if the addressing mode for the operation is *indirect addressing*?

**Solution Explanation:**

In *indirect addressing*, the memory address specified by the instruction contains the memory location where the data is stored. Let's follow this process for the instruction `Load 1200`:

1. The instruction specifies address `1200`.
2. The value stored at address `1200` is `800`.
3. According to indirect addressing, `800` is treated as the address where the actual data is stored.
4. The value stored at address `800` is `900`.

Therefore, `900` would be loaded into the AC (Accumulator) if the addressing mode for the operation is indirect addressing.
Transcribed Image Text:**Memory Addressing Problem Example** **Question 18** **Problem Statement:** Suppose we have the instruction `Load 1200`. Given memory as follows: | Address | Value | |---------|--------| | 800 | 900 | | 900 | 1000 | | 1000 | 500 | | 1100 | 600 | | 1200 | 800 | **Question:** What would be loaded into the AC if the addressing mode for the operation is *indirect addressing*? **Solution Explanation:** In *indirect addressing*, the memory address specified by the instruction contains the memory location where the data is stored. Let's follow this process for the instruction `Load 1200`: 1. The instruction specifies address `1200`. 2. The value stored at address `1200` is `800`. 3. According to indirect addressing, `800` is treated as the address where the actual data is stored. 4. The value stored at address `800` is `900`. Therefore, `900` would be loaded into the AC (Accumulator) if the addressing mode for the operation is indirect addressing.
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