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The [[BIOS]], which functions as a [[bootloader]] and supports legacy [[real mode]] applications, is a crucial component of many [[IBM-compatible]] computers. The BIOS is always 16-bit, often has networking functions and can be a security [[Backdoor (computing)|backdoor]].<ref>{{cite web|url=http://www.intel.com/content/www/us/en/architecture-and-technology/vpro/vpro-technology-general.html |title=Intel vPro Technology |publisher=Intel.com |date=2012-05-14 |accessdate=2014-04-10}}</ref><ref>{{cite web|url=https://www.absolute.com/en/partners/bios-compatibility.aspx |title=BIOS & Firmware Compatibility |publisher=Absolute.com |date= |accessdate=2014-04-10}}</ref>{{failed verification|date=April 2014}} In the late 1990s work started on EFI (Extensible Firmware Interface) with the objective to move legacy BIOS to a modern interface with a modular driver model. EFI is closed source and was eventually adopted by many industry leading hardware manufacturers as [[UEFI]] (Unified Extensible Firmware Interface). The EDK (EFI Development Kit) was developed to assist EFI firmware development projects.<ref>{{cite book |authors = Vincent Zimmer, Jiming Sun, Marc Jones & Stefan Reinauer |date= 2015 |title= Embedded Firmware Solutions: Development Best Practices for the Internet of Things |publisher= Apress |isbn= 9781484200704 | page = 121}}</ref>
Also in the late 1990s, the [[coreboot]] project was started to create an open source alternative to legacy BIOS from scratch.<ref>{{cite book |authors = Vincent Zimmer, Jiming Sun, Marc Jones & Stefan Reinauer |date= 2015 |title= Embedded Firmware Solutions: Development Best Practices for the Internet of Things |publisher= Apress |isbn= 9781484200704 | page = 121}}</ref> The coreboot developer community organises around [[Stefan Reinauer]] and is led by firmware developers with commit rights.<ref>{{cite book |authors = Vincent Zimmer, Jiming Sun, Marc Jones & Stefan Reinauer |date= 2015 |title= Embedded Firmware Solutions: Development Best Practices for the Internet of Things |publisher= Apress |isbn= 9781484200704 | page = 61}}</ref> Despite closed source binary firmware having been at the heart of the [[x86]] architecture coreboot only incorporates the few proprietary binaries that are necessary to provide users with a base level hardware support.<ref>{{cite book |authors = Vincent Zimmer, Jiming Sun, Marc Jones & Stefan Reinauer |date= 2015 |title= Embedded Firmware Solutions: Development Best Practices for the Internet of Things |publisher= Apress |isbn= 9781484200704 | page = 65}}</ref> A completely open source alternative to BIOS and UEFI is [[libreboot]], which
== See also ==
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