Technical Reference Guide
Compaq iPAQ Family of Internet Devices
First Edition - March 2000
8-1
Chapter 8
BIOS ROM
8.
Chapter 8 BIOS ROM
8.1 INTRODUCTION
The Compaq iPAQ Internet Device uses Compaq BIOS firmware loaded into the 82802 FWH
component. The BIOS ROM includes such functions as Power-On Self Test (POST), PCI device
initialization, Plug ‘n Play support, power management activities, and Setup. This chapter
includes the following topics:
♦
Boot/reset functions (8.2) page 8-2
♦
Memory detection and configuration (8.3) page 8-11
♦
PnP support (8.5) page 8-12
♦
Power management functions (8.6) page 8-15
♦
USB legacy support (8.7) page 8-17
♦
BIOS upgrading (8.8) page 8-18
The firmware contained in the BIOS ROM supports the following operating systems and
specifications:
♦
DOS 6.2
♦
Windows for Workgroups 3.11
♦
Windows 95
♦
Windows 98
♦
Windows NT 3.5 and 4.0
♦
OS/2 ver 2.1
♦
OS/2 Warp
♦
SCO Unix
♦
DMI 2.1
♦
Intel Wired for Management (WfM) ver. 2.2
♦
SMBIOS 2.3.1
♦
Alert-On-LAN (AOL)
♦
Wake-On-LAN (WOL)
♦
ACPI/WHIIG and OnNow
♦
APM 1.2
♦
Phoenix PMM
♦
PC98/99 and NetPC
The microprocessor accesses the BIOS ROM as a 128-KB block from E0000h to FFFFFh. The
BIOS data is shadowed in a 64-KB block in the upper memory area. The BIOS segments are
dynamically paged in and out of the 64-KB block as they are needed.
NOTE:
This chapter describes BIOS in general and focuses only on aspects of BIOS
unique to this particular system..
