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A microprocessor is wired into a sensing control circuit so that the memory locations 80 and 81 each contain the values 0 or 1. Memory location 84 is connected to a motor controller. When the value in 84 is 0 the motor is off. When it is 1 the motor is on. Write a program to switch on the motor when the values in locations 80 and 81 are both 1, and to switch off the motor when the values in locations 80 and 81 are both 0. Your program should start at memory location 10. You can only use the assembly language instructions, MOV, JMP and JNZ introduced in Book 3. Assume that the MOV instruction updates the flags with the status register. Explain how your program works and meets the specification.

A microprocessor is wired into a sensing control circuit so that the memory locations 80 and 81 each contain the values 0 or 1. Memory location 84 is connected to a motor controller. When the value in 84 is 0 the motor is off. When it is 1 the motor is on. Write a program to switch on the motor when the values in locations 80 and 81 are both 1, and to switch off the motor when the values in locations 80 and 81 are both 0. Your program should start at memory location 10. You can only use the assembly language instructions, MOV, JMP and JNZ introduced in Book 3. Assume that the MOV instruction updates the flags with the status register. Explain how your program works and meets the specification.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Amicroprocessor is wired into a sensing control circuit so that the memory locations 80 and 81 each contain the values 0 or 1. Memory location 84 is connected to a motor controller. When the value in 84 is 0 the motor is off. When it is 1 the motor is on. Write a program to switch on the motor when the values in locations 80 and 81 are both 1, and to switch off the motor when the values in locations 80 and 81 are both 0. Your program should start at memory location 10. You can only use the assembly language instructions, MOV, JMP and JNZ introduced in Book 3. Assume that the MOV instruction updates the flags with the status register. Explain how your program works and meets the specification.
Transcribed Image Text:Amicroprocessor is wired into a sensing control circuit so that the memory locations 80 and 81 each contain the values 0 or 1. Memory location 84 is connected to a motor controller. When the value in 84 is 0 the motor is off. When it is 1 the motor is on. Write a program to switch on the motor when the values in locations 80 and 81 are both 1, and to switch off the motor when the values in locations 80 and 81 are both 0. Your program should start at memory location 10. You can only use the assembly language instructions, MOV, JMP and JNZ introduced in Book 3. Assume that the MOV instruction updates the flags with the status register. Explain how your program works and meets the specification.
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