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An example of this kind of use concerned access to memory on early PCs. The original PCs used 8086 or 8088 processors which had the ability to address only 1 MB of memory. A large part of this was occupied by the BIOS and the video card, resulting in only 640 kB of contiguous addressable RAM being available. The memory requirement of many ...
In a computer using virtual memory, accessing the location corresponding to a memory address may involve many levels. In computing, a memory address is a reference to a specific memory location in memory used by both software and hardware. [1] These addresses are fixed-length sequences of digits, typically displayed and handled as unsigned ...
Write combining (WC) [1] is a computer bus technique for allowing data to be combined and temporarily stored in a buffer – the write combine buffer (WCB) – to be released together later in burst mode instead of writing (immediately) as single bits or small chunks.
VLC media player (previously the VideoLAN Client and commonly known as simply VLC) is a free and open-source, portable, cross-platform media player software and streaming media server developed by the VideoLAN project.
In write-back mode, writes are written to the CPU's cache and the cache is marked dirty, so that its contents are written to memory later. Write-combining allows bus write transfers to be combined into a larger transfer before bursting them over the bus to allow more efficient writes to system resources like graphics card memory. This often ...
W^X ("write xor execute", pronounced W xor X) is a security feature in operating systems and virtual machines. It is a memory protection policy whereby every page in a process's or kernel's address space may be either writable or executable, but not both. Without such protection, a program can write (as data "W") CPU instructions in an area of ...
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The zero page or base page is the block of memory at the very beginning of a computer's address space; that is, the page whose starting address is zero. The size of a page depends on the context, and the significance of zero page memory versus higher addressed memory is highly dependent on machine architecture.