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Page "X86" ¶ 20
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Intel and introduced
Intel introduced AGP support with the i440LX Slot 1 chipset on August 26, 1997, and a flood of products followed from all the major system board vendors.
However, it continued to use native x86 execution and ordinary microcode only, like Centaur's Winchip, unlike competitors Intel and AMD which introduced the method of dynamic translation to micro-operations with Pentium Pro and K5.
Industry Standard Architecture ( ISA ) is a computer bus standard for IBM PC compatible computers introduced with the IBM Personal Computer to support its Intel 8088 microprocessor's 8-bit external data bus and extended to 16 bits for the IBM Personal Computer / AT's Intel 80286 processor.
The IA-32 instruction set was introduced in the Intel 80386 microprocessor in 1986 and remains the basis of most PC microprocessors over twenty years later.
The Intel 80286 ( also called iAPX 286 ), introduced on 1 February 1982, was a 16-bit x86 microprocessor with 134, 000 transistors.
The Intel 8088 microprocessor was a variant of the Intel 8086 and was introduced on July 1, 1979.
The Intel 80386, also known as the i386, or just 386, was a 32-bit microprocessor introduced by Intel in 1985.
In 1988, Intel introduced the i386SX, a low cost version of the 80386 with a 16-bit data bus.
The Intel 80186 is a microprocessor and microcontroller introduced in 1982.
When attempting to increase processing power, Apple was hampered by the overheating problems of the 68040 ; this resulted in the 100-series PowerBook being stuck with the aging 68030 which could not compete with newer-generation Intel 80486-based PC laptops introduced in 1994.
A new StrongARM core was developed by Intel and introduced in 2000 as the XScale.
It was introduced by Intel on 7 October 1998.
Intel and AMD have introduced features to their x86 processors to enable virtualization in hardware.
Virtual memory was introduced to the x86 architecture with the protected mode of the Intel 80286 processor, but its segment swapping technique scaled poorly to larger segment sizes.
The Intel 80386 introduced paging support underneath the existing segmentation layer, enabling the page fault exception to chain with other exceptions without double fault.
MMX is a SIMD instruction set designed by Intel, introduced in 1997 for the Pentium MMX microprocessor.
In 1999, Intel introduced the Streaming SIMD Extensions ( SSE ) instruction set, following in 2000 with SSE2.
x86-64 had been preceded by another architecture employing 64-bit memory addressing: Intel introduced Itanium in 2001 for the high-performance computing market.
Intel and AMD have introduced x86 processors with hardware-based virtualization extensions that overcome the classical virtualization limitations of the x86 architecture.
Originally the peripheral processors were to be Intel 8086, but those proved inadequate and the system was introduced with Motorola 68000 series processors.
TAPI was introduced in 1993 as the result of joint development by Microsoft and Intel.

Intel and its
In commercial terms, the Athlon " Classic " was an enormous success — not just because of its own merits, but also because Intel endured a series of major production, design, and quality control issues at this time.
Due to Apple's moves and the mounting debt of Be Inc., BeOS was soon ported to the Intel x86 platform with its R3 release in March 1998.
The Intel P5 Pentium had two superscalar ALUs which could accept one instruction per clock each, but its FPU could not accept one instruction per clock.
Some processors, like the Intel 80386 and its successors, have hardware support for context switches, by making use of a special data segment designated the Task State Segment or TSS.
In this market, the Intel IA-32 architecture dominates, with its rivals PowerPC and SPARC maintaining much smaller customer bases.
3Com shipped its first 10 Mbit / s Ethernet 3C100 transceiver in March 1981, and that year started selling adapters for PDP-11s and VAXes, as well as Multibus-based Intel and Sun Microsystems computers.
Like its contemporary simpler cousin, the 80186, it could correctly execute most software written for the earlier Intel 8086 and 8088.
In 80286 ( and in its co-processor Intel 80287 ), arithmetic operations can be performed on the following different types of numbers:
In theory, real-mode applications could be directly executed in 16-bit protected mode if certain rules were followed ; however, as many DOS programs broke those rules, protected mode was not widely used until the appearance of its successor, the 32-bit Intel 80386, which was designed to go back and forth between modes easily.
The device needed several additional ICs to produce a functional computer, in part due to its small 18-pin " memory-package ", which ruled out the use of a separate address bus ( Intel was primarily a DRAM manufacturer at the time ).
The legacy of the 8086 is enduring in the basic instruction set of today's personal computers and servers ; the 8086 also lent its last two digits to later extended versions of the design, such as the Intel 286 and the Intel 386, all of which eventually became known as the x86 family.
However, IBM already had a history of using Intel chips in its products and had also acquired the rights to manufacture the 8086 family.
Single-sourcing the 386 allowed Intel greater control over its development and substantially greater profits in later years.
Not all of the processors already manufactured were affected, so Intel tested its inventory.
Intel later offered a modified version of its 80486DX in 80386 packaging, branded as the Intel RapidCAD.
Some of the fastest CPU upgrade modules featured the IBM SLC / DLC family ( notable for its 16 kB L1 cache ), or even the Intel 486 itself.
Later, with the introduction of the Pentium brand, Intel began branding its chips with words rather than numbers.
The instruction set of the i486 is very similar to its predecessor, the Intel 80386, with the addition of only a few extra instructions, such as CMPXCHG which executes the compare-and-swap atomic operation and the XADD which executes the fetch-and-add atomic operation returning the original value, unlike the ADD instruction that only returned some flags.
Intel's i486SX was a modified Intel 486DX microprocessor with its floating-point unit ( FPU ) disconnected.
On March 22, 2011 Intel reaffirmed its commitment to Itanium with multiple generations of chips in development and on schedule.
AMD chose a different direction, designing the less radical x86-64, a 64-bit extension to the existing x86 architecture, which Microsoft then supported, forcing Intel to introduce the same extension in its own x86-based processors.

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