Consider the following example: MOV AL, -5 SUB AL, +125 After executing these two lines of instructions, Carry Flag, CF = 0 and overflow flag, OF= 1. Show appropriate computation and reasoning to explain why CF = 0 and OF = 1.

Consider the following example: MOV AL, -5 SUB AL, +125 After executing these two lines of instructions, Carry Flag, CF = 0 and overflow flag, OF= 1. Show appropriate computation and reasoning to explain why CF = 0 and OF = 1.

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

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Concept explainers

Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

Question

Consider the following example:
MOV AL, -5
SUB AL, +125
After executing these two lines of instructions, Carry Flag, CF = 0 and overflow flag, OF =
1. Show appropriate computation and reasoning to explain why CF = 0 and OF = 1.

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