64-bit computing
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In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit central processing units and arithmetic logic units are those that are ba
Hex dump of the section table in a 64-bit Portable Executable File. A 64-bit word can be expressed as a sequence of 16 hexadecimal digits.
X86-64
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x86-64 is a 64-bit extension of the x86 instruction set. It was announced in 1999 and first available in the AMD Opteron family in 2003. It introduces two new operating modes: 64-bit mode and compatib
64-bit computing
…the use of machine code with 64-bit virtual memory addresses. However, not all 64-bit instruction sets support full 64-bit virtual memory addresses; x86-64 and AArch64, for example, support only 48 bits of virtual address, with the remaining 16 bits of the virtual address required to be all zeros (000…
AMD Opteron, the first CPU to introduce the x86-64 extensions in April 2003
The five-volume set of the x86-64 Architecture Programmer's Manual, as published and distributed by AMD in 2002