NCR S26 manual Configuring the System Board, Features, Major Components

Configuring the System Board

Configuring the System Board

This section contains information to help you properly configure the system board.

Features

The 64-bit, high-performance system board supports both the Intel Pentium™ and Pentium Pro™ microprocessors (also called CPUs). However, to provide maximum upgradability and flexibility, the microprocessors are not installed on the system board.

Instead, the system board has a special slot designed to accommodate a separate CPU board. This dual-processor CPU board contains both microprocessors and the embedded 512 KB pipeline burst second-level cache. See the section, “Installing CPU Boards,” in Chapter 3 of this manual.

Standard features such as a video port, two serial ports, one parallel port, diskette drive interface, and embedded fixed disk drive interface reside on the system board.

The system board has a 0 MB base memory and supports a maximum memory of 512 MB using 64 MB single-density single inline memory modules (SIMMs). A functional system is recommended to have at least 16 MB of RAM.

Major Components

The system board has the following major components:

∙Eight 72-pin SIMM sockets labeled Bank 0, 1, 2, and 3 (two sockets comprise one bank) that support single- and double-density 60/70 ns SIMMs

∙One CPU board slot

∙Two 32-bit EISA expansion slots supporting master/slave add-on cards

∙Four PCI local bus slots

2-10 Using System Features