HP Compaq dc7900 USDT Technical Reference Guide

Technical Reference Guide www.hp.com 8-1
8
SYSTEM BIOS
8.1 Introduction
The System Basic Input/Output System (BIOS) of the computer is a collection of machine
language programs stored as firmware in read-only memory (ROM). The system BIOS includes
such functions as Power-On Self Test (POST), PCI device initialization, Plug 'n Play support,
power management activities, and the Setup utility. The firmware contained in the system BIOS
ROM supports the following operating systems and specifications:
■ DOS 6.2, Windows 2000, XP, and Vista (Home and Professional versions)
■ Windows NT 4.0 (SP6 required for PnP support)
■ OS/2 ver 2.1 and OS/2 Warp
■ SCO Unix
■ DMI 2.1
■ Intel Wired for Management (WfM) ver. 2.2
■ Alert Standard Format (ASF) 2.0
■ ACPI and OnNow
■ SMBIOS 2.5
■ Intel PXE boot ROM for the integrated LAN controller
■ BIOS Boot Specification 1.01
■ Enhanced Disk Drive Specification 3.0
■ “El Torito” Bootable CD-ROM Format Specification 1.0
■ ATAPI Removeable Media Device BIOS Specification 1.0
■ Serial ATA Advanced Host Controller Interface (AHCI) 1.2
■ ATA with Packet Interface (ATA/ATAPI-7
The BIOS firmware is contained in a 32 Mb flash ROM part. The runtime portion of the BIOS
resides in a 128KB block from E0000h to FFFFFh.
This chapter includes the following topics:
■ ROM flashing (8.2)
■ Boot functions (8.3)
■ Client management functions (8.4)
■ SMBIOS support (8.5)
■ USB legacy support (8.6)
■ Management engine functions (8.7)

HP Compaq dc7900 USDT Specifications

General

Processor	Intel Core 2 Duo, Intel Pentium Dual-Core, Intel Celeron
Chipset	Intel Q45 Express
Network	Integrated Intel 82567LM Gigabit Network Connection
Form Factor	Ultra-Slim Desktop (USDT)
Audio	Integrated High Definition Audio
Memory	Up to 8 GB DDR2 SDRAM
Storage	SATA Hard Drive or Solid State Drive
Graphics	Intel Graphics Media Accelerator 4500
Optical Drive	DVD-ROM, DVD+/-RW
Ports	USB 2.0, VGA, DisplayPort, serial, parallel, PS/2
Operating System	Windows Vista, Windows XP
Power Supply	135W
Expansion Slots	1 low-profile PCI Express x16, 1 low-profile PCI