(b) Consider a 16-bit processor in which the following appears in main memory, starting at location 200: 200 Load to AC Mode 201 500 202 Next instruction The first part of the first word indicates that this instruction loads a value into an accumulator. The Mode field specifies an addressing mode and, if appropriate, indicates a source register; assume that when used, the source register is R1, which has a value of 400. There is also a base register that contains the value 100. The value of 500 in location 201 may be part of the address calculation. Assume that location 399 contains the value 999, location 400 contains the value 1000, and so on. Determine the effective address and the operand to be loaded for the following address modes, also explain the working in each mode: c. Indirect f. Register a. Direct b. Immediate d. PC relative e. Displacement g. Register indirect |

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
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question
(b) Consider a 16-bit processor in which the following appears in main memory, starting at location
200:
200
Load to AC
Mode
201
500
202
Next instruction
The first part of the first word indicates that this instruction loads a value into an accumulator. The
Mode field specifies an addressing mode and, if appropriate, indicates a source register; assume that
when used, the source register is R1, which has a value of 400. There is also a base register that
contains the value 100. The value of 500 in location 201 may be part of the address calculation.
Assume that location 399 contains the value 999, location 400 contains the value 1000, and so on.
Determine the effective address and the operand to be loaded for the following address modes, also
explain the working in cach mode:
a. Direct
d. PC relative
g. Register indirect |
c. Indirect
f. Register
b. Immediate
e. Displacement
Transcribed Image Text:(b) Consider a 16-bit processor in which the following appears in main memory, starting at location 200: 200 Load to AC Mode 201 500 202 Next instruction The first part of the first word indicates that this instruction loads a value into an accumulator. The Mode field specifies an addressing mode and, if appropriate, indicates a source register; assume that when used, the source register is R1, which has a value of 400. There is also a base register that contains the value 100. The value of 500 in location 201 may be part of the address calculation. Assume that location 399 contains the value 999, location 400 contains the value 1000, and so on. Determine the effective address and the operand to be loaded for the following address modes, also explain the working in cach mode: a. Direct d. PC relative g. Register indirect | c. Indirect f. Register b. Immediate e. Displacement
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 9 steps with 10 images

Blurred answer
Knowledge Booster
ALU instructions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education