The x86 Microprocessors: 8086 to Pentium, Multicores, Atom and the 8051 Microcontroller, 2nd Edition

10

Peripheral Interfacing—II

IN THIS CHAPTER, YOU WILL LEARN

• The architecture and programming features of the timer chip 8253/8254.
• The method of generating waveforms of dif­ferent frequencies using this chip.
• The use of the different modes of operation of the timer chip.
• The use of a dedicated chip 8279 for keyboard and display interfacing.
• The connections between the 8279 and the display circuits.
• How to use this chip in a circuit with a keyboard and a display.
• How interrupts are managed by the program­mable interrupt controller chip 8259.
• The use of initialization and operational control words of 8259.
• The method of changing the priority settings using this chip.
• The use of 8259 in PCs.

Introduction

In Chapter 9, we used the parallel ...