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	Xnu
		Xnu replaces statistically significant tandem repeats in protein sequences with X characters.
		Xnu is a program described by Claverie and States in Computers and Chemistry, 17; 191-201 (1993) that is used to mask off tandem repeats in protein sequences.
		Xnu does not recognize repeats if the width is set much longer than the length of either the repeat or the sequence.
	rcr-www.med.nyu.edu /rcr/gcg/xnu.html (1191 words)

	Canon Singapore Pte Ltd (Site not responding. Last check: 2007-10-10)
		Canon's rationale behind the XNU was based on a prerogative to create visually appealing printers that increase consumers' pride of ownership.
		XNU i320 has erased all these traces by reconfiguring the parts or by hiding them.
		In the case of the XNU i320, the design team wanted to create a printer that was reminiscent of the blue and white houses in the Greek islands.
	www.canon.com.sg /index.cfm?fuseaction=bubblejet&prod_type=xnui320_design&printerfriendly=yes (373 words)

	XNU: The Kernel
		XNU contains code based on Mach, the legendary architecture that originated as a research project at Carnegie Mellon University in the mid 1980s (Mach itself traces its philosophy to the Accent operating system, also developed at CMU), and has been part of many important systems.
		XNU's Mach component is based on Mach 3.0, although it's not used as a microkernel.
		XNU uses a specific type of kernel extensions, NKEs (Network Kernel Extensions), to make the 4.4BSD networking architecture fit in to Mac OS X. Kernel profiling is started, and BSD is "published" as a resource in the IOKit.
	www.kernelthread.com /mac/osx/arch_xnu.html (1412 words)

	[No title]
		subroutine d9knus (xnu, x, bknu, bknu1, iswtch) c june 1977 edition.
		xnu.ge.1.d0) call seteru (1 33hd9knus xnu must be ge 0 and lt 1, 33, 1, 2) if (x.le.0.) call seteru (22hd9knus x must be gt 0, 22, 2, 2) c iswtch = 0 if (x.gt.2.0d0) go to 50 c c x is small.
		xnu is reduced to the interval (-.5,+.5) c then to (0.,.5), because k of negative order (-nu) = k of positive c order (+nu).
	www.netlib.org /fn/d9knus.f (175 words)

	RoughlyDrafted: The Microkernel Myth part 3 (Site not responding. Last check: 2007-10-10)
		Apple's XNU kernel is larger than many monolithic kernels, and does not suffer from the intractable performance failure the world associates with Mach microkernel research.
		Its XNU kernel is not implemented as a microkernel.
		XNU incorporates many technologies from Mach which makes it different than traditional fat kernels such as BSD or Linux.
	www.roughlydrafted.com /0506.mk3.html (711 words)

	Advanced Synchronization in Mac OS X: Extending Unix to SMP and Real-Time
		xnu is not a traditional microkernel as its Mach heritage might imply.
		Through the development of xnu they have been no-ops, wrappers to getting the funnels, and most recently they act as asserts to make sure the funnels are in the correct state when they are called.
		In order to handle this, xnu generally uses a simple interrupt handler that processes the interrupt by triggering a handler in a regular kernel thread context that a driver has registered for the interrupt handler.
	www.usenix.org /events/bsdcon02/full_papers/gerbarg/gerbarg_html (3273 words)

	.:h4nyn3t:.
		XNU is the kernel of Apple Darwin and Mac OS X operating systems.
		XNU is an opensource project, sources are provided by Apple ADC website under the APSL (Apple Public Software License)
		XNU 7.0.0b1 kernel binary (Panther kernel, 2 cpu, 1.4 Mb)
	www.hanynet.com /xnu (91 words)

	Encyclopedia (Site not responding. Last check: 2007-10-10)
		XNU is the name of the kernel used in the open source Darwin computer operating system, that Apple uses as the foundation of its Mac OS X operating system.
		XNU is a recursive acronym for XNU is Not Unix.
		The primitives and fundamental services of the XNU kernel are based on Mach 3.0.
	simple.seowaste.com /xnu (283 words)

	Slashdot \| Apple Offers Solution to IT Roadmap Complaints
		XNU was one of the few components of Darwin that wasn't already open source - that is, most of the rest of Darwin is actually directly ported from the BSDs, GNU, Apache foundation, and other open source/Free Software systems.
		The source for xnu has been open, continues to be open on PowerPC, and is available in an earlier incarnation for x86 (parity with Mac OS X 10.4.0).
		The bottom line is, while Intel xnu is closed right now (and I have never disputed that fact), it's also accurate, given all of the information we know and can infer[2] right now, that the decision isn't final, and indeed may only be temporary.
	rss.slashdot.org /Slashdot/slashdotApple?m=347 (3749 words)

	Theocacao: Tom Yager Oversells Open Kernel Issues
		The xnu source is and always has been interesting for three reasons: hobbyists looking for a good time, community bug fixing, and help in developing drivers.
		If Apple has extended the development of xnu in a similar fashion to the FreeBSD kernel, then the platform specific code will be focused in a single location, and be incorporated in such a way that the vast majority of the kernel source code is platform agnostic.
		At that point, it only matters that you don't have the i386 code in very odd scenarios, but otherwise should be sufficiently happy with the ppc code base for purposes of exploring the kernel, or using the kernel as a base for driver development.
	theocacao.com /document.page/269 (1563 words)

	Canon Printer Website (Site not responding. Last check: 2007-10-10)
		The xnu i320 has an updated driver that allows Easy-PhotoPrint to process digital camera images using all their colours.
		The xnu i320 printer driver is equipped with a Photo Noise Reduction function to eliminate noise in digital camera images, ensuring exceptionally smooth, natural-looking images.
		The xnu i320 allows direct connection to PCs with Microsoft Windows XP, Windows 2000, Windows Me or Windows 98, or USB-equipped Macintosh computers (Mac OS 8.6 - 9.x or Mac OS X v 10.1 or later).
	bubblejet.canon.com.my /product/bubble_jet/i320.htm (546 words)

	BLAST, filtering - CBRG, Oxford University
		DUST for nucleic acids, XNU for amino acids.
		SEG and XNU are used to filter amino acid sequences.
		XNU finds regions containing internal repeats of short periodicity, for example, poly-GXX of collagen tails.
	www.compbio.ox.ac.uk /analysis_tools/BLAST/BLAST_filtering.shtml (1398 words)

	Canon’s Xnu look
		And the Xnu isn’t just good at graphics—you can expect it to print text that’s clear right down to a font size of 2 points.
		The Xnu supports the new Exif 2.2 standard to ensure better reproduction of digital images, and comes with the Easy Photo-Print software that lets you choose the size and type of paper.
		If you want the Xnu to perform consistently, clean it regularly with the included software tools for printer maintenance tasks like head cleaning and alignment, nozzles check, etc. Other regular features include the new USB 2.0 interface for quick and easy installation.
	www.computersathome.com /content/comp_at_work/printer/102113001.asp (661 words)

	WIRED Blogs: Cult of Mac
		The reason xnu is slower is because it's a Mach/BSD hybird.
		Another thing to recognize is that building xnu is fundamentally more difficult than recompiling a Linux kernel.
		I was a bit loose with the wording "on the fly." The point I was trying to make is that xnu is pretty darn slim already, and recompiling it is a completely different process from tweaking a Linux or Solaris kernel.
	blog.wired.com /cultofmac/index.blog?entry_id=1482220 (929 words)

	Recording Artist: Delaying the xnu-x86 source release
		Tom Yager at InfoWorld points out that Apple has released the source code to everything in the x86 build of OSX Darwin except for the kernel, xnu.
		And when Apple releases a major rev of xnu, there are always some people who pore over it looking at the diffs.
		Apple does have ways to keep prerelease stuff out of the source release, of course, but it adds a layer of complication and risk to go back and hack that up after the fact.
	drewthaler.blogspot.com /2006/05/delaying-xnu-x86-source-release.html (1494 words)

	Genome Informatics Abstracts 1999
		The results CAR scores were compared to those obtained using the XNU filter as a masking technique and WU-BLASTP (2.0) as the search algorithm.
		Alignments are missed by XNU + BLASTP as a result of excessive masking by XNU, but large numbers of false positive alignments are seen if BLAST is run without XNU.
		On the other hand, XNU + BLASTP is, in some cases, able to detect regions of similarity in the myosin heavy chain family, which has some members with a minimal amount of repetitive region.
	www.ornl.gov /hgmis/publicat/99santa/110.html (440 words)

	Games - XNU
		XNU is the name of the kernel that Apple
		It is a hybrid kernel combining the Mach kernel developed at Carnegie Mellon University with components from the FreeBSD kernel as well as a C++ API for writing drivers called I/O Kit
		The core of the XNU kernel, Mach, provides kernel threads, processes, pre-emptive multitasking, message-passing (used in inter-process communication), protected memory, virtual memory management, real-time support, kernel debugging support, and console I/O. The Mach component also allows the OS to host binaries for multiple distinct CPU architectures within a single file (such as x86 and PowerPC
	listing-index.ebay.com /games/XNU.html (540 words)

	Businessworld (Site not responding. Last check: 2007-10-10)
		The XNU i320 is an all-rounder in performance too.
		During tests, Canon's XNU took just 14 seconds to print a full-page of text.
		The XNU can work with an iMac - and would probably look rather nice next to it.
	www.businessworld.in /WebUserArticle.aspx?SectionId=410 (776 words)

	Building the Kernel (xnu) (Site not responding. Last check: 2007-10-10)
		xnu uses a configuration system similar to the "normal" BSD style, except it uses a configuration file for each subsystem.
		The BSD subsystem variables can be tuned, but right now Darwin supports few enough drivers, that all of them are built into the kernel, and it doesn't affect performance/memory usage very much.
		After building xnu, you have to make sure that IOKit, Kernel and System frameworks are all up-to-date.
	www.opendarwin.org /en/faq/ch04s02.html (815 words)

	Canon Xnu i255
		One good thing about this printer is that it’s compact and will easily fit in minimal space.
		This printer comes with an easy to install and fast USB interface, and is meant for home user’s basic printing needs as well as for printing good quality photographs.
		Xnu i255 can print fine, crisp graphics at resolutions of up to 2400x1200 dpi.
	www.pcquest.com /content/hardware/104013004.asp (297 words)

	Bessel (JMSL Numerical Library)
		This method is based on the work of Cody (1983).
		xnu must be less than one in absolute value.
		Evaluates a sequence of modified Bessel functions of the first kind with real order and real argument.
	www.vni.com /products/imsl/jmsl/v25/api/com/imsl/math/Bessel.html (1061 words)

	Xnu Patches (Site not responding. Last check: 2007-10-10)
		Most of the below patches are functionality from the OpenBSD kernel that I've attempted to port to Xnu (Darwin and Mac OS X's kernel).
		This is perfectly acceptable behavior because nowhere in the RFC does it state that this number needs to start at one.
		This patch is against xnu 201.19 (Mac OS X 10.1.3) but should apply against most other versions.
	www.linville.org /darwin.html (268 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		.TH "xnu" 1 "February 18, 1992" \" This is the on-line manual page for xnu.
		.LP For.I xnu the PAM120 matrix is used for scoring similarities, internal repeats with a period of less then or equal to 4 are eliminated, and the expectation cutoff for elimination is 0.01.
		Repeat sequences will be replaced by a space holding character in the output sequence.
	blast.wustl.edu /pub/xnu/xnu.1 (446 words)

	Building the XNU kernel on Mac OS X 10.3.x / OpenDarwin 7.2.1 (for mortals) (Site not responding. Last check: 2007-10-10)
		Building the XNU kernel on Mac OS X 10.3.x / OpenDarwin 7.2.1 (for mortals)
		This document describes the procedure for building the XNU kernel on Mac OS X 10.3.x, Darwin 7 and OpenDarwin.
		It does not cover building other parts of OpenDarwin, just the basics that are required for building the kernel.
	www.opendarwin.org /en/articles/building_xnu (128 words)

	Re: Intel XNU bug report
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	lists.apple.com /archives/Darwin-dev/2006/Aug/msg00095.html (217 words)

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