Compaq iPAQ 1.0 User Manual

Chapter 2 System Overview
Compaq iPAQ Series of Desktop Personal Computers
Second Edition – February 2001
2-10
2.4 SYSTEM ARCHITECTURE
The Compaq iPAQ Series of Desktop Personal Computers features Intel Celeron or Pentium III
processors. The iPAQ 1.0/1.2 models employ an architecture based on the Intel 810e chipset
while iPAQ 2.0 models are based on the Intel 815e chipset.
2.4.1 IPAQ 1.0/1.2 ARCHITECTURE
The architecture of iPAQ 1.0/1.2 models is based on the Intel 810e chipset with a Celeron or
Pentium III processor installed as standard. iPAQ 1.0 systems feature 500-MHz processors while
iPAQ 1.2 systems feature 733-MHz Pentium III processors. As indicated in the following table and
shown in Figure 2-8, two basic configurations are available:
♦ Legacy-free with Celeron or Pentium III processor
♦ Legacy with Celeron or Pentium III processor
Legacy-free systems provide five Universal Serial Bus (USB) ports for connecting peripherals
(including the supplied USB mouse and USB keyboard). Legacy light systems provide two USB
ports along with PS/2 ports for the supplied mouse and keyboard as well as parallel and serial
ports.
NOTE: A legacy-free iPAQ 1.0/1.2 system is upgradeable to become a legacy system
only by changing the system board.
All iPAQ 1.x systems use the 810E chipset. The 810E chipset includes the 82810E-DC100 GMCH
designed to support 100-MHz SDRAM and also integrates a 2D/3D Direct AGP graphics
controller. Pentium III-based systems come with an additional 4-MB display cache (soldered
down) to compliment the graphics controller.
The 810E chipset also includes an 82801 I/O Controller Hub (ICH) that provides two IDE
interfaces, two USB interfaces, and a PCI bus controller. The 82802 Firmware Hub (FWH)
component is loaded with Compaq BIOS. The iPAQ 1.0/1.2 features an AC’97 audio subsystem
with 5-watt amplifier and internal speaker. All iPAQ 1.0/1.2 systems feature a 90-watt power
supply. Table 2-2 lists differences between system architectures:
Table 2-2. iPAQ 1.0/1.2 Architectural Comparison
Table 2-2.
IPAQ 1.0/1.2 Architectural Comparison
IPAQ 1.0 IPAQ 1.2
Legacy-Free Legacy Legacy-Free Legacy
Processor Type Celeron Pentium Celeron Pentium Pentium Pentium
Processor Speed (MHz) 500 500 500 500 733 733
FSB Speed (MHz) 66 100 66 100 133 133
4-MB Display Cache? No Yes No Yes Yes Yes
Mouse/Keyboard Type USB USB PS/2 PS/2 USB PS/2
Serial port? No No Yes Yes No Yes
Parallel port? No No Yes Yes No Yes
# of USB ports 5 5 2 2 5 2

Compaq iPAQ 1.0 Specifications

General

Brand	Compaq
Model	iPAQ 1.0
Category	Desktop
Language	English