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Topic: Halt and Catch Fire

Related Topics

Killer poke

Pentium F0 bug

Microprocessor

Instruction set

Motorola 6800

Motorola 6809

SWTPC

Zilog Z80

Intel 8080

List of operating systems

Pentium FDIV bug

Motorola

Intel 8085

DRAM

Pentium Pro

In the News (Mon 4 Jun 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	Halt and Catch Fire - Wikipedia, the free encyclopedia
		Halt and Catch Fire, known by the mnemonic HCF, was originally a ficticious computer machine code instruction claimed to be under development at IBM for use in their System/360 computers, along with many other amusing instructions such as "Execute Operator".
		The old "Halt and Catch Fire" instruction and HCF mnemonic were appropriated by users who discovered these instructions as a humorous way of expressing that the unintended execution of such an instruction causes the system to fail to perform its normal functions, while nevertheless appearing quite busy.
		The Motorola 6800 microprocessor was the first for which an HCF opcode became widely known.
	en.wikipedia.org /wiki/Halt_and_Catch_Fire (395 words)

	Motorola 6809
		But it was also highly optimised, gaining up to five times the speed of the 6800 series CPU.
		Like the 6800, it included the undocumented HCF (Halt and Catch Fire) bus test instruction.
		The optimisation of the 6809 processor meant that, unlike many processors of the day, the instructions were mostly hardwired into the processor, rather than written using microcode.
	www.ebroadcast.com.au /lookup/encyclopedia/68/6809.html (543 words)

	Halt and Catch Fire: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-26)
		Halt and Catch Fire: Facts and details from Encyclopedia Topic
		Halt and Catch Fire, EHandler: no quick summary.
		The Motorola 6800[For more info, click on this link] microprocessor was the first for which an HCF opcode opcode quick summary:
	www.absoluteastronomy.com /encyclopedia/h/ha/halt_and_catch_fire.htm (512 words)

	F00f - Wikipedia, the free encyclopedia
		Operating system vendors responded by implementing workarounds that detected the condition and prevented the crash.
		Although technically not an example of either, the f00f is often considered an HCF instruction, or a killer poke.
		Since the f00f bug has become common knowledge, the term is sometimes used to describe similar hardware design flaws, such as the Cyrix coma bug.
	en.wikipedia.org /wiki/F00f (380 words)

	Multia/UDB - Halt and Catch Fire
		Instruction for the 1802 CMOS microprocessor that did indeed cause the CPU to enter a "running" halt, ie.
		the CPU continued to execute the halt instruction indefinitely.
		This particular instruction caused the CPU to draw large amounts of current.
	webpages.charter.net /dbarnes3367/PC/Multia/hacf.html (538 words)

	Halt and Catch Fire - Trying Windows Media Center - Nonliteral
		Unfortunately, someone (who had no reason to know not to) was by the other day and closed the doors.
		I didn’t happen to catch it, and yesterday evening watching a bit of TV on the box, the damn thing actually caught fire…
		On investigating (and discovering the doors fully closed) I opened the case, cooled it off, and eventually decided that the problem was a drive cable (in a vinyl sheath) that had been too close to the the processor heat sink.
	www.nonliteral.com /articles/halt-and-catch-fire-trying-windows-mce (627 words)

	Halt and Catch Fire - Computing Reference - eLook.org
		Halt and Catch Fire - Computing Reference - eLook.org
		(HCF) Any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the IBM 360.
		This instruction caused the processor to toggle a subset of the bus lines as rapidly as it could; in some configurations this could actually cause lines to burn up.
	www.elook.org /computing/halt-and-catch-fire.htm (84 words)

	Hcf (Site not responding. Last check: 2007-10-26)
		The three-letter acronym HCF may have at least two different meanings, depending on context:
		hcF Porsche AG, Stuttgart, is introducing the Cayman, a new version of the mid-engine sports coupé.
		hcF Porsche AG, PCNA employs approximately 300 people who provide Porsche vehicles, parts, service, marketing and training for its 213 US and Canadian dealers.
	www.33beat.com /Hcf.html (289 words)

	HALT from FOLDOC (Site not responding. Last check: 2007-10-26)
		The halting problem is the canonical example of a provably unsolvable problem.
		Some special cases of the halting problem are partially solvable given sufficient resources.
		For example, if it is possible to record the complete state of the execution of the algorithm at each step and the current state is ever identical to some previous state then the algorithm is in a loop.
	www.instantweb.com /d/dictionary/foldoc.cgi?query=HALT (291 words)

	Halt - ,HALT,Halt Nederland,Aljazeera.Net - Iraq calls on Syria to halt infiltration,MercuryNews.com \| 11/11/2005 \| ... (Site not responding. Last check: 2007-10-26)
		HALT accepts college and graduate school interns to work in our Washington, HALT interns are engaged almost exclusively in substantive work.
		Regulators in New York rejected a bid to stop Verizon Communications’ FTTH buildout until it obtained cable franchises.
		Anti-nuclear protestors repeatedly halted a controversial shipment of highly radioactive nuclear waste from France Monday bound for a temporary storage
	bewinning.com /?q=halt (328 words)

	White Space
		In this particular case, I attempted to constrain the answer to the question “how should a literal carriage return, #x0D, be treated in a formatting object tree?” I thought there were three possibilities: treat it like a space, treate it like a line feed, #x0A, or discard it.
		There were at least five answers, two others being: treat it as a line feed with line-feed-treatment set to preserve and treat it as an error (“halt and catch fire”).
		Before we could answer this question, of course, we had to spend twenty minutes making sure we all understood the rules for numeric character references and attribute value normalization.
	norman.walsh.name /2004/03/10/whitespace (789 words)

	Debian -- libclass-virtual-perl (Site not responding. Last check: 2007-10-26)
		It allows you to explicitly declare what methods are virtual and that must be implemented by subclasses.
		This might seem silly, since your program will halt and catch fire when an unimplemented virtual method is hit anyway, but there's some benefits.
		Instead of the usual "Can't locate object method" error, you'll get one explaining that a virtual method was left unimplemented.
	packages.debian.org /stable/perl/libclass-virtual-perl.html (170 words)

	Some Low-Fare 'Chinatown' Buses Told to Halt Over Safety
		Federal officials have stepped up surprise inspections of low-fare bus companies in the Washington-to-Boston corridor amid concerns by federal and state regulators that some curbside operators are unsafe and under-regulated.
		The new government scrutiny follows two fires involving low-cost carriers on the New York-Boston route this year and concerns raised by Sen. Charles E. Schumer (D-N.Y.) that some discount carriers are being allowed to operate with "egregiously low" federal safety ratings.
		A review by The Washington Post found that three companies offering service from the District to New York this year received low FMCSA safety ratings, including one, Tomorrow Travel and Tour Inc., that was ordered out of service last summer but kept operating.
	www.washingtonpost.com /wp-dyn/content/article/2005/11/22/AR2005112202037.html (562 words)

	exec_verify home (Site not responding. Last check: 2007-10-26)
		It works by storing an MD5 sum and some other info of various executables an administrator might care about or which might be common rootkit targets in the module itself during buildtime.
		If it doesn't match, the administrator can decide what to do: ignore it, log it, block the exec(), or "Halt and Catch Fire." The module also has some special provisions for suid/sgid executable handling.
		We are releasing the module to the community in the hopes that we will get some much-needed feedback on our design, implementation methodology and code.
	web.sigkill.com /exec-verify (343 words)

	Assembler Mnemonics Revealed (Site not responding. Last check: 2007-10-26)
		I recently received this from a friend -- it appears to be a modern version of an old theme, quite possibly by someone who's not familiar with the various older lists of this type (though come to think of it, I'm not so sure someone that young would have come up with "Punch Operator" shrug).
		A couple of my favourites aren't on this list, most noticeably "HCF -- Halt and Catch Fire".
		The explanatory text which appears below was included in the file I received.
	www.radix.net /~dglenn/humour/assembler-codes-1.html (273 words)

	HAM from FOLDOC
		Previous: HAL/S, Halt and Catch Fire, halting problem, Hamilton, Hamiltonian cycle
		Previous: Halt and Catch Fire, halting problem, Hamilton, Hamiltonian cycle, Hamiltonian path
		Previous: halting problem, Hamilton, Hamiltonian cycle, Hamiltonian path, Hamiltonian problem
	www.instantweb.com /d/dictionary/foldoc.cgi?HAM (374 words)

	hcf
		2 definitions found From Jargon File (4.2.3, 23 NOV 2000) [jargon]: HCF /H-C-F/ n.
		The MC6800 microprocessor was the first for which an HCF opcode became widely known This instruction caused the processor to {toggle} a subset of the bus lines as rapidly as it could in some configurations this could actually cause lines to burn up Compare {killer poke}.
		From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]: HCF 1.
	www.beetfoundation.com /words/h/hcf.html (170 words)

	ongoing · Dracon and Postel
		Similarly, a conforming XML processor must "not continue normal processing" once it detects a fatal error.
		Phrases used to amplify this wording have included "halt and catch fire", "barf", "flush the document down the toilet", and "penalize innocent end-users".
		The rest of that note provides a useful introduction to the issue.
	www.tbray.org /ongoing/When/200x/2003/08/19/Draconianism (889 words)

	Acronym Finder Definition: What does HCF stand for?
		Acronym Finder Definition: What does HCF stand for?
		Note: We have 26 other definitions for HCF
		All trademarks/service marks referenced on this site are properties of their respective owners.
	www.acronymfinder.com /acronym.aspx?rec={913EE798-89E8-11D4-8351-00C04FC2C2BF} (52 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		It is easier to catch flies with honey than with vinegar.
		Always use your enemy's hand to catch a snake.
		Out of the frying pan, into der fire.
	home.icequake.net /~nemesis/misctext/3000tags.txt (16176 words)

	Using USB printer in MS-DOS prompt?
		MMX: NOP ; after MMX: executes F0 0F C7 C8 HCF - Halt and Catch Fire / 6.
		Posted: Sat Jan 01, 2005 12:10 pm Post subject: Re: Using USB printer in MS-DOS prompt?
		HCF - Halt and Catch Fire / 6.
	www.howtofixcomputers.com /bb/ptopic69347.html (498 words)

	MacKiDo/History/brief_history
		There was one particular accidental value (instruction) you could send to the 4004 processor that would cause it to burn out.
		That instruction was affectionately named - HCF or Halt and Catch Fire.
		I affectionately call it the forerunner of the FDIV bug of the
	www.mackido.com /History/brief_history.html (4171 words)

	low level format details
		I am thinking of the IBM 60 GXP "format unit" command.
		Is that like the famous "Halt and catch fire" command?
		I see I elicited a typical response from you.
	www.howtofixcomputers.com /bb/ntopic4416.html (2510 words)

	Re: Inheritance in XML
		The processor must know what to do with the >new nodes.
		It must either know to ignore the "extra" content of the >derived element type, or it must know to ignore the tags and process the >content, or halt and catch fire, or do something else.
		You are arguing >that it should always use the "ignore content" model, but we know from >HTML that this is often not appropriate.
	www.stylusstudio.com /xmldev/199804/post50290.html (488 words)

	Perl.com: This week on Perl 6 (11/17-11/23, 2002)
		Iacob Alin wondered if the various types would be PMCs (answer: Only those types which don't easily map to native types.) Florian Weimer wondered about trapping integer arithmetic.
		Dan says these will be handled using Parrots standard exception handling mechanism (which doesn't actually exist yet, but signs in the wind suggest we might be getting a Halt and Catch Fire op to raise an exception).
		According to Steve Fink: "The basic status is that lots of people, many of them coincidentally named Leopold Tötsch, have been fixing zillions of things and implementing a number of new features.
	www.perl.com /lpt/a/2002/11/p6pdigest/20021127.html (2442 words)

	terra
		There is no guarantee of fitness for any purpose applicable to this site.
		If the content of this site causes your computer to halt and catch fire, please let me know so I may rejoice in the knowledge.
		High-precision repeat gravity research - this is the pre-release site; it is not updated often, and generally arcane.
	terra.gg.utah.edu (707 words)

	VRML WeekEnd Theme (Site not responding. Last check: 2007-10-26)
		That usually means VRML, ActiveWorlds, Viscape, or a similar 3D format.
		The final file (with textures) should be smaller than Sid and the Penguins (the fabulous VRML world premiered at SIGGRAPH 98 that's 10 MB and makes just about everybody's machine halt and catch fire).
		Use any tools you like, or no tools.
	www.crispen.org /worlds/wet (175 words)

	nka 3 november 1998
		Clan Lord has stopped ruining my life because the Clan Lord server hit an
		exception (halt and catch fire) on Friday and Delta Tao hasn't been able to get the server back up all weekend.
		So my mind should be clear and unfettered, right?
	www.nobody-knows-anything.com /Nov98/981103.html (542 words)

	Halt and Catch Fire Definition. Define Halt and Catch Fire. What is Halt and Catch Fire?
		How Do I Create a Network of People?
		Free Definitions : Define Halt and Catch Fire.
		(HCF) Any of several undocumented and semi-mythical {machine instructions} with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the {IBM 360}.
	www.learnthat.com /define/view.asp?id=7580 (150 words)

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