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	Intel 80286 - Wikipedia, the free encyclopedia
		The Intel 80286 is an x86-family 16-bit microprocessor that was introduced by Intel on February 1, 1982.
		Initially released in 6 and 8 MHz editions, it subsequently scaled up to 20 MHz, and was widely used in IBM PC compatible computers during the mid 1980s to early 1990s.
		Despite their market popularity, few desktop computers with a 80286 CPU still remain in use today.
	en.wikipedia.org /wiki/80286 (264 words)

	Lloyd Borrett - Computing - Articles - Which CPU Should You Purchase
		IBM and Microsoft made an announcement at Comdex in November that their "Platform for the 90s" was to be based on the capabilities of the Intel 80386SX, 80386, 80486 and future Intel family microprocessors.
		80286 based systems were delivering about 5-10 times the performance of, and cost about half as much as, early 8088/8086 systems.
		As we saw the 80286 replace the 8088/8086, which in turn replaced the early 8-bit microprocessors, so shall we see the 386 family replace the 80286.
	www.borrett.id.au /computing/art-1990-02-02.htm (2274 words)

	CPU-World: Intel 80286 microprocessor family
		Intel 80286 is a next generation of 8086 16-bit processor.
		The 80286 microprocessor was produced at speeds ranging from 4 MHz to 25 MHz.
		4 MHz C80286 is the slowest Intel 80286 processor.
	www.cpu-world.com /CPUs/80286 (124 words)

	80286 (Site not responding. Last check: 2007-10-21)
		The Intel 80286 (officially named the iAPX 286) is a x86 16-bit central processing unit that was introduced by Intel on the 1st of February, 1982.
		Initially released in 6 and 8MHz editions, it subsequently scaled up to 20MHz, and was widely used in IBM PC compatible computers during the mid 1980s to early 1990s.
		On DOS machines this additional ram capability can only be utilised via extended memory emulation, however few 286-based computers ever saw more than a megabyte of ram.
	www.yourencyclopedia.net /80286.html (192 words)

	80286 (Site not responding. Last check: 2007-10-21)
		The 80286 processor came in a type of package that was not seen on the earlier processor chips.
		The main advantage of the 80286 over previous chips was the added computing power, the chip had almost the same ISA as the 8088 and the 8086, but with additional hardware support for segmentation and memory protection.
		The 80286 uses a 16 bit input/output path rather than an 8-bit path, and it has 24 address lines and a 16-MB physical address space.
	web.bryant.edu /~history/h364proj/fall_99/ferreira/80286.htm (227 words)

	80286 (Site not responding. Last check: 2007-10-21)
		THe 80286 processor has a 16-bit data bus and incorporates a memory management unit that allowed a limited amount of multitasking.
		The 80286 only has a segmented MMU while the later processors add a paged MMU "behind" the segmented one.
		The 80286 was the processor in the IBM PC AT personal computer.
	www.linuxguruz.com /foldoc/foldoc.php?80286 (95 words)

	Excerpt from The advanced Intel Microprocessor
		The 80286 microprocessor is available with a clock speed of 8, 10, or 12.5 MHz from Intel with other vendors supplying a 16 MHz version.
		The 80286 is designed to operate at temperatures that range between 0C and + 70C.
		Standard logic circuits have a maximum logic 0 voltage of 0.4 V, and the 80286 has a maximum logic 0 voltage of 0.45 V. This is a difference of 0.05 V. Table 7-2.
	users1.ee.net /brey/e4.htm (829 words)

	Do you plan to provide 80286 or 80386 CPU's? (Site not responding. Last check: 2007-10-21)
		It is possible that we would release an 80286 version of XTM - the 80286 emulation would run a little slower than the current 80186 product but may increase software compatibility.
		However, you should note that the reason many programs need an 80286 or 80386 processor is because they need more memory space than they can access using the 1 megabyte address space of the basic 80186 architecture.
		Adding an 80286 CPU emulation will not add any RAM to your Nokia or Psion machine, and we would not be able to support very much extended memory in XTM.
	www.nb-info.co.uk /FAQ00017.htm (176 words)

	wiki/80286 Definition / wiki/80286 Research (Site not responding. Last check: 2007-10-21)
		The Intel 80286 is an x86x86 or Intel 80x86 is the generic name of a microprocessor architecture first developed and manufactured by Intel.
		The 80286 performs at twice the speed of its predecessor (the Intel 8086) per clock cycle, and is able to address up to 16 megabytesA megabyte (informally, meg) is a unit of measurement for computer storage, memory and information that is either exactly or approximately equal to one million bytes, depending on the definition used.
		All x86 CPUs in the 80286 series and later start up in real mode at power-on; 80186 CPUs and earlier had only one operational mode, which is equivalent to real mode in later chip...
	www.elresearch.com /wiki/80286 (1534 words)

	The 80x86 Processor Family
		The 80286 has two different types of operating mode: real address mode and protected address mode.
		The real address mode was introduced in the 80286 to permit backward compatibility with the 80186 and the 8086 processors.
		In the protected mode the 80286 uses 32 bits to address up to 1 gigabyte of memory.
	www.cs.ucdavis.edu /~haungs/paper/node5.html (368 words)

	cpu-collection.de >> 80286
		The 80286 was introduced by Intel on February 1, 1982.
		The 6 MHz 80286 is the CPU of the IBM AT (Advanced Technology), which also introduced a 16-bit motherboard and 16-bit expansion bus to the PC world.
		The 80286 was typically made in 3 package versions, each with 68 contacts: a PGA-, CLCC- and a PLCC-package.
	www.cpu-collection.de /?tn=1&l0=cl&l1=80286 (395 words)

	Preface 4
		This text is written for the student in a course of study that requires a thorough knowledge of the Intel family of microprocessors beginning with the Intel 80286.
		Because the Intel family of microprocessors is quite diverse, this text initially concentrates on the 80286 microprocessor.
		Chapter 1 introduces the Intel family of microprocessors with an emphasis on the 80286 microprocessor.
	members.ee.net /brey/p4.htm (1071 words)

	13.1 80286 Code Executes as a Subset of the 80386
		In general, programs designed for execution in protected mode on an 80286 execute without modification on the 80386, because the features of the 80286 are a subset of those of the 80386.
		All the descriptors used by the 80286 are supported by the 80386 as long as the Intel-reserved word (last word) of the 80286 descriptor is zero.
		The descriptors for data segments, executable segments, local descriptor tables, and task gates are common to both the 80286 and the 80386.
	www.logix.cz /michal/doc/i386/chp13-01.htm (319 words)

	Limitations of the IBM PC Architecture (Site not responding. Last check: 2007-10-21)
		The 80286 is similar to the 8086 in concept.
		Since the 80286 has a 16M byte address space, this memory is addressed linearly—no bank select hardware is necessary.
		Like the 80286, the 80386 has a segmented architecture, and like the 80286, it has two execution modes: real and protected.
	world.std.com /~swmcd/steven/rants/pc.html (2428 words)

	Introduction to Protected-Mode
		Another deficiency of the 80286 was related to the maximum size of segments.
		In view of the limitations of the 80286 design, Intel released its next innovation known as the 80386.
		A 32-bit address bus replaced the old 24-bit bus of the 80286 giving the user a total of 4GB physical address space, a third operating mode dubbed Virtual-Mode was implemented to support execution of old 8086 code while still running in a protected-mode environment, and, last but not least, Paging support was added.
	www.internals.com /articles/protmode/introduction.htm (1391 words)

	80286 Also called the 286 16-bit micro-processor
		The 80286 is eqivalent to approximately 134,000 transistors and can execute 1.2 million instructions per second.
		The floating-point processor for the 80286 is the 80287 (sometimes called the 'maths co-processor').
		A few months ago we were approached by a company wanting us to update their existing website with a fresher look and make it more optimised towards search engines to increase sales.
	www.ssiltd.co.uk /glossary/details.asp?item=910 (281 words)

	80386 Programmer's Reference Manual -- Section 13.3
		With the 80286, any base and offset combination that addresses beyond 16M bytes wraps around to the first megabyte of the 80286 address space.
		Other values that were invalid on for the 80286 may be valid for the 80386 because of the additional descriptor types defined by the 80386.
		With the 80386, the defined area of memory is guaranteed to be locked against access by a processor executing a locked instruction on exactly the same memory area, i.e., an operand with identical starting address and identical length.
	i386.cybersabotage.com /s13_03.html (512 words)

	80386 Programmer's Reference Manual -- Section 14.8
		The few differences that exist between 80386 real-address mode and 80286 real-address mode are not likely to affect any existing 80286 programs except possibly the system initialization procedures.
		Programs that use forms of memory locking specific to the 80286 may not execute properly if transported to a specific application of the 80386.
		With the 80386, the defined area of memory is guranteed to be locked against access by a processor executing a locked instruction on exactly the same memory area, i.e., an operand with identical starting address and identical length.
	i386.cybersabotage.com /s14_08.html (378 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		The 80286 microprocessor supports a full 16MB address space, however this additional memory is only accessible when the 80286 operates in what is termed as its protected mode.
		The default mode of operation for the 80286 is real mode, which is 8086 compatible.
		At the time that the 80286 was being designed by Intel, they had no idea that the PC and the 8086 would enjoy widespread popularity, and hence, the design of 80286 protected mode is very incompatible with real mode.
	www.textfiles.com /computers/dosmem.txt (1863 words)

	What is HMA? Intel Real Mode 80286 80386 Microprocessors 64K (Site not responding. Last check: 2007-10-21)
		When Intel designed the 80286 and 80386 microprocessors they where given a special mode of operation, called Real mode, to enable them to operate just like the earlier 8086/8088 processors.
		Those earlier processors could only contact or 'address' up to 1 Mb of memory (1,048,576 memory locations, each holding eight bits), while the later 80286 could address 16,777,216 locations (16Mb) and the 80386 a massive 4,294,967,296 (4Gb - more than any computer based on the chip can actually use).
		While the 286 and 386 processors are operating in Real mode, to look like a 8086/8088, they can address only the first lMb of memory (no matter how much may be fitted in the computer), plus - due to an oversight- an extra 64K.
	bugclub.org /beginners/memory/hma.html (123 words)

	Intel 80286
		The 80286 was the chip used in IBM's AT (advanced technology) system.
		The 286 was the first major step up in PC processors, providing significant performance increases over the 8088 and 8086--double or more performance at the same clock speed.
		The 80286 is of course considered obsolete today.
	www.pcguide.com /ref/cpu/fam/g2I80286-c.html (219 words)

	ClipX - Assembly Language - .286c enable real mode 80286 instructions masm directive (Site not responding. Last check: 2007-10-21)
		.286c Enable Real Mode 80286 Instructions MASM Directive.286c Enables assembly of 80286 real mode instructions, as well as 8086 and 80186 instructions (80186 instructions are identical to 80286 real mode instructions).
		Notes: This directive should be used for programs that execute only on an 80286 (or 80386) in real mode.
		See.286p for a directive which will generate code for the protected mode of the 80286.
	www.clipx.net /ng/asm/ng32344.php (127 words)

	ClipX - Assembly Language - .286p enable protected mode 80286 instructions masm directive (Site not responding. Last check: 2007-10-21)
		Notes: This directive should only be used for programs which will only run in the protected mode of the 80286.
		Place all Instruction set directives at the beginning of the source file to insure that all instructions in the file are assembled using the same microprocessor instruction set.
		See.286c for a directive which will generate code for the real mode only of the 80286.
	www.clipx.net /ng/asm/ng3260c.php (125 words)

	Intel 80286 - Wikipédia
		L'Intel 80286 (officiellement nommé iAPX 286) est un microprocesseur CISC 16 bits fabriqué par Intel et présenté le 1
		Le 80286 est deux fois plus rapide que le Intel 8086 par cycle d'horloge et est capable d'adresser jusqu'à 16 Mo de RAM (contre 1 Mo pour le 8086).
		Série x86 (16 et 32 bits) : ; 8086 ;· 8088 ;· 80186 ;· 80188 ;· 80286 · 80386 ;· 80486 (486SL, 486SX, 486DX)· Pentium ;· Pentium Pro · Pentium II · Celeron · Celeron M · Pentium III · Pentium 4 · Pentium 4-M · Pentium M
	fr.wikipedia.org /wiki/Intel_80286 (188 words)

	LinuxQuestions.org - Linus Distro in 80286? - where Linux users come for help
		Linux was developed on 80386 which uses 32 bit addressing.
		Linux has never worked on 80286 and making it work would mean a complete rewrite from the ground up.
		Articles on 8086 and 80286 distros are always published on April 1.
	www.linuxquestions.org /questions/showthread.php?postid=477225 (411 words)

	Preface of The Intel Microprocessors: 8086/8088, 80186/80188, 80286, 80386, 80486, Pentium, and Pentium Pro Processor, ...
		This practical reference text is written for students in a course that requires a thorough knowledge of programming and interfacing of the Intel family of microprocessors.
		Coverage of the 80286, because of its similarity to the 8086 and 80386, is minimized so the 80386, 80486, and Pentium versions can be covered in complete detail.
		Through this approach, the operation of the microprocessor and programming with the advanced family members, along with interfacing all family members, provides a working and practical background of the Intel family of microprocessors.
	users1.ee.net /brey/p8.htm (939 words)

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