IA-32


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IA-32

(Intel Architecture-32) The designation for Intel's x86 family of CPUs. Intel had previously used Intel Architecture (IA) without a number as its x86 technology brand, but changed it to IA-32 when it introduced the Itanium, which was designated IA-64. The "32" is somewhat imprecise because the earliest models of the x86 line were 16-bit CPUs, and later models were 64 bit.

IA-64 Vs. Intel 64
Subsequent to the Itanium, Intel added 64-bit models to its x86 line, but could obviously not call them IA-64 chips because IA-32 and IA-64 referred to entirely different architectures. The designation Intel 64 (first called "EM64T") was given to 64-bit models in the IA-32 line. See IA-64, Intel 64, x86 and x64.


IA-32 Microarchitectures
Intel has had numerous microarchitectures within the IA-32 (x86) architecture. These start with the Pentium chip (see microarchitecture).
References in periodicals archive ?
Intel's innovative EM64T technology is an enhancement to Intel's market leading IA-32 architecture and enables the processor to run 64-bit programs and access larger amounts of memory while also supporting programs written for Intel's IA-32 architecture.
Since the initial release of Red Hat Enterprise Linux, subscribers have received regular technology updates such as SATA device support, Intel(R) EM64T support, and the IA-32 execution layer for Intel(R) Itanium(R) 2 processors.
Support for commodity architectures: IA-32, Itanium, PPC
The Intel Xeon processor, featuring Intel Extended Memory 64 Technology, will enable Rackable Systems' customers to maintain compatibility with the vast IA-32 infrastructure of today, while offering increased memory addressability and a transparent upgrade path to tomorrow's 64-bit-enabled software.
This processor also features innovations such as Hyper-Threading Technology and Intel(R) Extended Memory 64 Technology," said Samuel Sanchez, VP of marketing, "which offers compatibility with today's vast ecosystem of IA-32 software applications, increased system memory addressability, and offers investment protection for the future evolutionary transition to 64-bit-enabled applications.
With four 90nm fabs in production and two 65nm fabs ramping toward the end of 2005, Intel has more capacity than it can use for just IA-32 and IA-64 processors.
2 on Itanium architecture for Linux, VERITAS is increasing its commitment to making Linux enterprise-ready and extending its broad Linux platform support to both IA-32 and Itanium-based architectures.