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palcode.scroll
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palcode.scroll
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import ../code/conceptPage.scroll
id palcode
name PALcode
appeared 1996
tags isa
fileType na
centralPackageRepositoryCount 0
country United States
originCommunity Digital Equipment Corporation
reference http://www.science.unitn.it/~fiorella/guidelinux/tlk/node140.html
wikipedia https://en.wikipedia.org/wiki/PALcode
related freebsd linux
summary In computing, in the Alpha instruction set architecture, PALcode (Privileged Architecture Library code) is the name used by DEC for a set of functions in the SRM or AlphaBIOS firmware, providing a hardware abstraction layer for system software, covering features such as cache management, translation lookaside buffer (TLB) miss handling, interrupt handling and exception handling. PALcode is Alpha machine code, running in a special mode that also allows access to internal registers specific to the particular Alpha processor implementation. It is thus somewhere between the role of microcode and of a hardware emulator. PALcode is operating system-specific; different versions of PALcode are required by OpenVMS, Tru64 UNIX, and Windows NT. Tru64 UNIX PALcode is also used by NetBSD, FreeBSD, OpenBSD and Linux.
pageId 5817145
dailyPageViews 8
created 2006
backlinksCount 24
revisionCount 21
appeared 1996