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1 memory address
A portion of computer memory that can be allocated to a device or used by a program or the operating system. Devices are usually allocated a range of memory addresses. -
2 address
A number specifying a location in memory where data is stored. -
3 virtual address
"In a virtual memory system, the address the application uses to reference memory. The kernel and the memory management unit (MMU) translate this address into a physical address before the memory is actually read or written." -
4 physical address extension
"A feature that allows x86-based computers to support more than 4 gigabytes (GB) of physical memory. Up to 64 GB of physical memory can be used as regular 4-kilobyte (KB) pages, and the number of bits that can be used by the kernel to address physical memory can be expanded from 32 to 36."English-Arabic terms dictionary > physical address extension
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5 physical address expansion
"A feature that allows x86-based computers to support more than 4 gigabytes (GB) of physical memory. Up to 64 GB of physical memory can be used as regular 4-kilobyte (KB) pages, and the number of bits that can be used by the kernel to address physical memory can be expanded from 32 to 36."English-Arabic terms dictionary > physical address expansion
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6 real address
An absolute (machine) address specifying a physical location in memory. -
7 absolute address
An absolute (machine) address specifying a physical location in memory. -
8 Virtual Memory Size
"In Task Manager, the amount of virtual memory, or address space, committed to a process." -
9 base address
The part of a two-part memory address that remains constant and provides a reference point from which the location of a byte of data can be calculated. -
10 TLB
A table used in a virtual memory system that lists the physical address page number associated with each virtual address page number. A TLB is used in conjunction with a cache whose tags are based on virtual addresses. The virtual address is presented simultaneously to the TLB and to the cache so that cache access and virtual-to-physical address translation can occur simultaneously. -
11 PAE
"A feature that allows x86-based computers to support more than 4 gigabytes (GB) of physical memory. Up to 64 GB of physical memory can be used as regular 4-kilobyte (KB) pages, and the number of bits that can be used by the kernel to address physical memory can be expanded from 32 to 36." -
12 probe
A process that checks that a memory-address range is in user-mode address space and that the range can be read or written in the context of the current process. -
13 kernel mode
"A highly privileged mode of operation where program code has direct access to all memory, including the address spaces of all user-mode processes and applications, and to hardware." -
14 supervisor mode
"A highly privileged mode of operation where program code has direct access to all memory, including the address spaces of all user-mode processes and applications, and to hardware." -
15 protected mode
"A highly privileged mode of operation where program code has direct access to all memory, including the address spaces of all user-mode processes and applications, and to hardware." -
16 Ring 0
"A highly privileged mode of operation where program code has direct access to all memory, including the address spaces of all user-mode processes and applications, and to hardware." -
17 null pointer
"A pointer to nothing: usually a standardized memory address, such as 0. A null pointer usually marks the last of a linear sequence of pointers or indicates that a data search operation has come up empty." -
18 dereference
To programmatically access a memory address assigned to a pointer variable or reference variable. -
19 working set
The set of pages in the virtual address space of the process that are currently resident in physical memory.
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