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    IA-32 - Wikipedia

    IA-32 (short for "Intel Architecture, 32-bit", commonly called i386 ) is the 32-bit version of the x86 instruction set architecture, designed by Intel and first implemented in the 80386 microprocessor in 1985. IA-32 is the first incarnation of x86 that supports 32-bit computing; as a result, the "IA-32" term may … See more

    The primary defining characteristic of IA-32 is the availability of 32-bit general-purpose processor registers (for example, EAX and EBX), 32-bit integer arithmetic and logical operations, 32-bit offsets within a segment in See more

    1985
    IA-32 is first implemented in the 80386 microprocessor.
    1990s
    VIA, Transmeta and other chip manufacturers also produced IA-32 compatible processors.
    2000s
    The majority of manufacturers (Intel included) moved almost exclusively to implementing CPUs based on the 64-bit variant of x86, x86-64.
    2023
    As of 2023, IA-32 protected mode versions of many modern operating systems are still maintained.
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  2. Intel® 64 and IA-32 Architectures Software Developer …

    WEBApr 24, 2024 · The Intel® 64 and IA-32 architectures software developer's manuals are now available for download via one combined volume, a four-volume set, or a ten-volume set. All content is identical in each set; see …

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    Short for Intel Architecture 32, IA-32 was the first 32-bit processor architecture developed by Intel, and is still the basis for many microprocessors in use today. Early on, it was used to transition the old 16-bit architecture of the dated 286 computers to the new 386 standard.
    IA-32 is the first incarnation of x86 that supports 32-bit computing; as a result, the "IA-32" term may be used as a metonym to refer to all x86 versions that support 32-bit computing. Within various programming language directives, IA-32 is still sometimes referred to as the "i386" architecture.
    en.wikipedia.org
    Early on, it was used to transition the old 16-bit architecture of the dated 286 computers to the new 386 standard. The IA-32 architecture was later replaced by IA-64. Was this page useful? Yes No
    The IA-32 architecture provides a mechanism to automatically switch stack frames in response to an interrupt. The 64-bit extensions of Intel 64 architecture implement a modified version of the legacy stack-switching mechanism and an alternative stack-switching mechanism called the interrupt stack table (IST).
  4. Intel® 64 and IA-32 Architectures Software Developer’s Manual

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  11. What is IA-32 (Intel Architecture 32)? - Computer Hope