Toshiba R100 manual Hardware Overview Features

1 Hardware Overview 1.1 Features

The PC contains the following components.

❑CPU Pentium® M

•A 900/600MHz Centrino processor with a 400MHz external clock, 100MHz bus and 1.2V/1.05 core operation voltage (built-in NDP).

•Internal cache memory: 32KB Data and 32KB Instruction, Write-Back

•Secondary cache memory: 1MB (in CPU)

❑Memory

One memory slot capable of accepting 256MB-memory module for a maximum of 512MB.

•2.5V operation

•140-pin exclusive memory board

•Access time : 6ns

•Memory Supporting PC-2100(Operation is PC100)

❑BIOS ROM (Flash memory)

•4Mbit (256K⋅16-bit chip)

−64KB used for logo

−64KB used for setup and checksum

−128KB used for system BIOS

−64KB used for VGA-BIOS

−64KB used for ACPI

−8KB used for PnP

−8KB used for password security

−16KB used for booting

−64KB used for LAN

−32KB are reserved

•5.0V operation

•Access time : 120 ns or 90 ns

•Data transfer: 8-bit

1-6 PORTEGE R100 Maintenance Manual (960-440)