Computer Science Suppose, a control register of 8155 PPI has an address of 1Fh. If following instructions are executed in an 8085 microprocessor system, then derive the all the port functionalities (i.e., including pins) of the 8155 PPI. MVI A, ABh OUT 1Fh

Computer Science Suppose, a control register of 8155 PPI has an address of 1Fh. If following instructions are executed in an 8085 microprocessor system, then derive the all the port functionalities (i.e., including pins) of the 8155 PPI. MVI A, ABh OUT 1Fh

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter6: System Integration And Performance

Section: Chapter Questions

Problem 28VE

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Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.

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Computer Science

Suppose, a control register of 8155 PPI has an address of 1Fh. If following instructions are
executed in an 8085 microprocessor system, then derive the all the port functionalities (i.e.,
including pins) of the 8155 PPI.
MVI A, ABh
OUT 1Fh

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