DIGITAL PC 3100/5100

This document serves as a comprehensive system reference guide for the DIGITAL PC 3100 and DIGITAL PC 5100 computers, detailing their operation, configuration, and upgrade procedures. It covers both low profile and short tower chassis versions.

The guide is structured into several key sections:

• Quick Setup and External Connections: Describes the computer's front and rear panel components, indicators, and connectors. It provides instructions for physically securing the computer, connecting various external devices such as speakers, headphones, microphones, printers, and USB devices, and creating an ergonomic working environment.
• BIOS Setup Utility: Explains how to use the BIOS Setup utility to configure the computer's hardware and software. This includes changing time and date, setting security options (supervisor/user passwords, boot sector virus protection, SecureBIOS), configuring power management, setting up disk drives, speeding up the boot process, and adjusting keyboard features.
• Internal Components and Expansion: Offers a detailed look inside the computer, identifying main logic board components and backplane connectors. It provides procedures for improving computer performance through upgrades, such as replacing the lithium battery, installing higher-performance processors and voltage regulators, and adding more computer and video memory.
• Expansion Boards and Mass Storage: Guides users through installing ISA and PCI expansion boards and connecting various mass storage devices (hard disk drives, diskette drives, CD-ROM drives, SCSI devices), including specific cabling and configuration guidelines.
• Technical Specifications and Device Mapping: Includes appendices with vital computer specifications, performance attributes, environmental operating conditions, power requirements, main logic board switch settings, and detailed tables for processor memory address, I/O address, interrupt levels, and DMA channel assignments. It also lists supported video output modes and provides a glossary of technical terms.