Consider the instruction Load 200. Given the following memory and register R1 contents: Memory 120 200 400 600 800 350 600 900 400 250 Assume R1 is implied in the indexed addressing mode. Determine the actual value loaded into the accumulator (AC) for each of the following addressing modes: Mode Immediate Direct Indirect Indexed R1 600 Value Loaded into AC

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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2. Consider the instruction Load 200. Given the following memory and register R1 contents:
Memory
120
200
400
600
800
350
600
900
400
250
Assume R1 is implied in the indexed addressing mode. Determine the actual value loaded
into the accumulator (AC) for each of the following addressing modes:
Mode
Immediate
Direct
Indirect
Indexed
R1 600
Value Loaded into AC
Transcribed Image Text:2. Consider the instruction Load 200. Given the following memory and register R1 contents: Memory 120 200 400 600 800 350 600 900 400 250 Assume R1 is implied in the indexed addressing mode. Determine the actual value loaded into the accumulator (AC) for each of the following addressing modes: Mode Immediate Direct Indirect Indexed R1 600 Value Loaded into AC
Expert Solution
Step 1

Instruction is: LOAD 200    

The instruction format is:    

OP code | Address    

Now, based on the addressing mode, the address field contains different values.   

Addressing mode:- Immediate addressing mode      

When the addressing mode is immediate then the value inside the address field is the actual data to be retrieved.  So, address field = 200 = data. So, 200 is loaded into AC.

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