enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. List of discontinued x86 instructions - Wikipedia

    en.wikipedia.org/wiki/List_of_discontinued_x86...

    Then, for each of 4 consecutive AVX-512 registers, they will, for each 32-bit lane, interpret the lane as a two-component vector (signed 16-bit) and perform a dot-product with the corresponding two-component vector that was read from memory (the first two-component vector from memory is used for the first AVX-512 source register, and so on).

  3. FMA instruction set - Wikipedia

    en.wikipedia.org/wiki/FMA_instruction_set

    The FMA instruction set is an extension to the 128 and 256-bit Streaming SIMD Extensions instructions in the x86 microprocessor instruction set to perform fused multiply–add (FMA) operations. [1] There are two variants: FMA4 is supported in AMD processors starting with the Bulldozer architecture. FMA4 was performed in hardware before FMA3 was.

  4. x86 instruction listings - Wikipedia

    en.wikipedia.org/wiki/X86_instruction_listings

    Will change OperandSize from 16-bit to 32-bit if CS.D=0, or from 32-bit to 16-bit if CS.D=1. 67h: AddressSize override. Will change AddressSize from 16-bit to 32-bit if CS.D=0, or from 32-bit to 16-bit if CS.D=1. The 80386 also introduced the two new segment registers FS and GS as well as the x86 control, debug and test registers.

  5. x32 ABI - Wikipedia

    en.wikipedia.org/wiki/X32_ABI

    Several people had discussed the benefits of an x86-64 ABI with 32-bit pointers in the years since the Athlon 64's release in 2003, notably Donald Knuth in 2008. [9] There was little publicly visible progress towards implementing such a mode until August 27, 2011, when Hans Peter Anvin announced to the Linux kernel mailing list that he and H. J ...

  6. SystemRescue - Wikipedia

    en.wikipedia.org/wiki/SystemRescue

    The live cd iso file being installed needs to match the system being used; for 64-bit x86-64 processors amd64 is used, for 32-bit IA-32 processors i686 is used. [9] The supported architecture is listed at the end of the iso filename. The CD can also boot from a customized DVD which has almost 4.6 GB of free space for backed-up files.

  7. Netwide Assembler - Wikipedia

    en.wikipedia.org/wiki/Netwide_Assembler

    The Netwide Assembler (NASM) is an assembler and disassembler for the Intel x86 architecture. It can be used to write 16-bit, 32-bit and 64-bit programs. It is considered one of the most popular assemblers for Linux and x86 chips. [3] It was originally written by Simon Tatham with assistance from Julian Hall.

  8. Virtual DOS machine - Wikipedia

    en.wikipedia.org/wiki/Virtual_DOS_machine

    In an x86-64 CPU, virtual 8086 mode is available as a sub-mode only in its legacy mode (for running 16- and 32-bit operating systems), not in the native 64-bit long mode. [30] NTVDM is not supported on x86-64 editions of Windows, [ 31 ] including DOS programs, [ 32 ] because NTVDM uses VM86 CPU mode instead of the Local Descriptor Table in ...

  9. IA-32 Execution Layer - Wikipedia

    en.wikipedia.org/wiki/IA-32_Execution_Layer

    The IA-32 Execution Layer (IA-32 EL) is a software emulator in the form of a software driver that improves performance of 32-bit applications running on 64-bit Intel Itanium-based systems, particularly those running Linux and Windows Server 2003 (it is included in Windows Server 2003 SP1 and later [1] and in most Linux distributions for Itanium).