Interfacing the PC / Beyond Logic
Original documentation from

Interfacing the Standard Parallel Port

Table of Contents

Introduction to Parallel Ports
Hardware Properties
Port Addresses
Software Registers - Standard Parallel Port (SPP)
Bi-directional Ports
Using the Parallel Port to Input 8 Bits
Nibble Mode
Using the Parallel Port's IRQ
Parallel Port Modes in BIOS
Parallel Port Modes and the ECP's Extended Control Register
PDF Version


Introduction to Parallel Ports