Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 63. Chapters: X86, IA-32, Pentium FDIV bug, Hyper-threading, Wintel, ICOMP, X86-64, X86 assembly language, X86 calling conventions, X86 virtualization, Physical Address Extension, X87, 3DNow!, CPUID, Time Stamp Counter, Intel Turbo Boost, A20 line, Task State Segment, Trusted Execution Technology, MS-DOS API, AES instruction set, FMA instruction set, Interrupt descriptor table, Input/output base address, Local Descriptor Table, Global Descriptor Table, PCI hole, PSE-36, Intel APIC Architecture, Pentium F00F bug, Call gate, List of former IA-32 compatible processor manufacturers, Page Size Extension, FLAGS register, Rapid Virtualization Indexing, List of x86 manufacturers, CLMUL instruction set, High memory, Privilege level, X2APIC, Native x86-64 Windows software, Page Attribute Table, Ralf Brown's Interrupt List, Segment descriptor, Dual-voltage CPU, Direction flag, MultiProcessor Specification, Maximum mode, IOPL, Virtual legacy wires, Minimum mode, X64 Edition, Trap flag, Adjust flag, Zero flag. Excerpt: x86-64 is an extension of the x86 instruction set. It supports vastly larger virtual and physical address spaces than are possible on x86, thereby allowing programmers to conveniently work with much larger data sets. x86-64 also provides 64-bit general purpose registers and numerous other enhancements. The original specification was created by AMD, and has been implemented by AMD, Intel, VIA, and others. It is fully backwards compatible with 32-bit code. Because the full 32-bit instruction set remains implemented in hardware without any intervening emulation, existing 32-bit x86 executables run with no compatibility or performance penalties, although existing applications that are recoded to take advantage of new features of the processor design may see significant performance increases. After launching the architecture under t...Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
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