x86

Other manufacturers produced hybrid boards which contained an Intel x86 series chip, allowing the Amiga to emulate a PC.

The AGP slot first appeared on x86 compatible system boards based on Socket 7 Intel P5 Pentium and Slot 1 P6 Pentium II processors.

The original Athlon ( now called Athlon Classic ) was the first seventh-generation x86 processor and, in a first, retained the initial performance lead it had over Intel's competing processors for a significant period of time.

Internally, the Athlon is a fully seventh generation x86 processor, the first of its kind.

Like the AMD K5 and K6, the Athlon dynamically buffers internal micro-instructions at runtime resulting from parallel x86 instruction decoding.

AMD designed the CPU with more robust x86 instruction decoding capabilities than that of K6, to enhance its ability to keep more data in-flight at once.

The Athlon's three decoders could potentially decode three x86 instructions to six microinstructions per clock, although this was somewhat unlikely in real-world use.

Athlon was the first x86 processor with a 128 kB split level 1 cache ; a 2-way associative, later 16-way, cache separated into 2 × 64 kB for data and instructions ( Harvard architecture ).

It launched with superior performance over all other x86 processors available at the time, including Intel's flagship Pentium III, in every benchmark.

Category: Advanced Micro Devices x86 microprocessors

As a direct descendent of the 8008, the 8080, and the 8086, the modern ubiquitous Intel x86 processors still uses the primary accumulator EAX and the secondary accumulator EDX for multiplication and division of large numbers.

However, MUL and DIV are special cases, other arithmetic-logical instructions ( ADD, SUB, CMP, AND, OR, XOR, TEST ) may specify any of the eight registers EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI as the accumulator ( i. e. left operand and destination ); x86 is thus a fairly general register architecture, despite being based on an accumulator model.

The 64-bit extension of x86, x86-64, has been further generalized to 14 instead of 6 general registers.

There are a few alternatives for " Legacy BIOS " in the x86 world: Extensible Firmware Interface, Open Firmware ( used on the OLPC XO-1 ), and coreboot.

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.

32 and 64 bit x86 ports are supported on each platform.

It is available on Linux and BSD for Intel x86 ; Linux for Alpha ; Mac OS X for Intel x86 and PowerPC ; and Solaris, IRIX, and HP-UX on their native platforms.

; Movitz: Implements a Lisp environment for x86 computers without relying on any underlying OS.

" SBCL runs on the platforms CMUCL does, except HP / UX ; in addition, it runs on Linux for AMD64, PowerPC, SPARC, MIPS, Windows x86 and has experimental support for running on Windows AMD64.

Several Intel CPUs in the x86 architecture family have writable microcode.

With special software it's possible to read C1581 disks on a x86 PC system, and likewise, read MS-DOS disks in the C1581 ( Big blue reader ) provided the PC floppy handles the " 720 kB " size format.

Cygwin began in 1995 as a project of Steve Chamberlain, a Cygnus engineer who observed that Windows NT and 95 used COFF as their object file format, and that GNU already included support for x86 and COFF, and the C library newlib.

In addition, there are numerous virtualization solutions that provide x86 platform virtualization to run Windows and Unix-like operating systems simultaneously on the same hardware, but without the integration of the environments that Cygwin provides.

Winelib, a part of the Wine project, is the inverse of Cygwin-it is a free and open source compatibility layer for Unix-like operating systems on the x86 or x86-64 architecture that can allow programs written for Microsoft Windows to run on Unix-like operating systems.