BIOS, in computing, stands for Basic Input/Output System or Basic Integrated Operating System. BIOS refers to the software code run by a computer when first powered on. The primary function of BIOS is to prepare the machine so other software programs stored on various media (such as hard drives, floppies, and CDs) can load, execute, and assume control of the computer. This process is known as booting up.
BIOS can also be said to be a coded program embedded on a chip that recognises and controls various devices that make up the computer.
The term BIOS is specific to personal computer vendors. Among other classes of computers, the generic terms boot monitor, boot loader or boot ROM are commonly used.
More on [ BIOS ]
BIOS :: Components
Kildall, Gary :: Pioneers
Boot Managers :: Operating Systems
Booting :: Hardware Support

BIOS Setup Information Guide - How-to guides, general information, upgrades, identifying motherboards, links!
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FreeBIOS - Project goal: be a central gathering point for BIOS firmware code that can be used to initialize and boot various services. At first, due to the large scope of the project, it will likely only boot a Linux kernel on a few chipsets. Later, it may be a full BIOS substitute for many popular motherboards.
FreeBIOS: SourceForge - Project page: summary, developers, downloads, news, forum.
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GBIOS Page - BIOS for PowerPC based embedded systems; developed, released by AG Electronics; supports PPC 750 (G3), 7400 (G4); AG Electronics TPE4, Motorola Sandpoint. Modular, Ethernet boots. Download, email support. [Open Source, GPL]
LinuxBIOS - Open source Los Alamos Laboratory project to replace normal BIOS with a little hardware initialization and compressed Linux kernel that boots from power-on, and have OS control a cluster node from power-on. Needs few parts to boot, fast (3 sec.), freedom from proprietary (buggy) code. Support by many vendors in performance and embedded computing markets.
OpenBIOS: FSF/GNU.org - Description, links, contacts.
The BIOS: Basic Input/Output System - BIOS memory timing, links.
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