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((refimprove|date=March 2008))
'''Hardware-dependent software''' ('''HDS''' or '''HdS'''), the part of an [[operating system]] that varies across [[microprocessor]] [[circuit board|board]]s and is comprised notably of [[device driver]]s and of [[boot]] code which performs hardware initialization. HDS does not comprise code which is only specific to a [[central processing unit|processor]] family and can run unchanged on various members of it. The HDS is alternatively called the [[Board support package|BSP]], for ''Board Support Package'', especially in the world of commercial operating systems where the processor family code is distributed in binary form only.

Often software that runs on operating systems may be hardware dependent at first, but [[emulator]]s can reduce dependencies for specific hardware.<ref name="HDS"/><ref name="SoftSoc"/>

==See also==
*[[Basic Input/Output System]] (BIOS)
*[[DeviceKit]]
*[[Embedded systems]]
*[[Firmware]]
*[[HAL (software)]]
*[[Hardware abstraction layer]]
*[[Machine-dependent software]]
*[[Programmable logic]]

==References==
((reflist|refs=
<ref name="HDS">((cite book |title=Hardware-dependent Software, Principles and Practice |editor-last1=Ecker |editor-first1=Wolfgang |editor-last2=Müller |editor-first2=Wolfgang |editor-last3=Dömer |editor-first3=Rainer |publisher=[[Springer Science+Business Media B.V.]] |edition=1 |doi=10.1007/978-1-4020-9436-1 |date=2009 |isbn=978-1-4020-9435-4))</ref>
<ref name="SoftSoc">((cite web |url=http://www.softsoc.org |title=MEDEA+ SoftSoc Project |access-date=2020-01-09 |archive-url=https://web.archive.org/web/20091221162108/http://www.softsoc.org/ |archive-date=2009-12-21 |url-status=dead )) (NB. SoftSoc is a European research project directly related to hardware-dependent software.)</ref>
))

((DEFAULTSORT:Hardware-Dependent Software))
[[Category:Computing terminology]]


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