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  2. x86 memory models - Wikipedia

    en.wikipedia.org/wiki/X86_memory_models

    However, on the 80386, with its paged memory management unit it is possible to protect individual memory pages against writing. [4] [5] Memory models are not limited to 16-bit programs. It is possible to use segmentation in 32-bit protected mode as well (resulting in 48-bit pointers) and there exist C language compilers which support that. [6]

  3. 128-bit computing - Wikipedia

    en.wikipedia.org/wiki/128-bit_computing

    A processor with 128-bit byte addressing could directly address up to 2 128 (over 3.40 × 10 38) bytes, which would greatly exceed the total data captured, created, or replicated on Earth as of 2018, which has been estimated to be around 33 zettabytes (over 2 74 bytes). [1] A 128-bit register can store 2 128 (over 3.40 × 10 38) different

  4. MemTest86 - Wikipedia

    en.wikipedia.org/wiki/Memtest86

    Detections of faulty memory are displayed prominently. The application shows which memory locations failed and which patterns made them fail. There are two development streams of MemTest86(+). The original is simply known as MemTest86. The other, known as Memtest86+, is a development fork of the original MemTest86. Their on-screen appearance ...

  5. Orders of magnitude (data) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(data)

    10 39: 2 131 bits, 2 128 bytes – theoretical maximum volume size of the ZFS filesystem. [26] [27] [28] 2 150: 10 42 ~ 10 42 bits – the number of bits required to perfectly recreate the natural matter of the average-sized U.S. adult male human brain down to the quantum level on a computer is about 2.6 × 10 42 bits of information (see ...

  6. Byte addressing - Wikipedia

    en.wikipedia.org/wiki/Byte_addressing

    An eight-bit processor like the Intel 8008 addresses eight bits, but as this is the full width of the accumulator and other registers, this could be considered either byte-addressable or word-addressable. 32-bit x86 processors, which address memory in 8-bit units but have 32-bit general-purpose registers and can operate on 32-bit items with a ...

  7. RAM parity - Wikipedia

    en.wikipedia.org/wiki/RAM_parity

    Logic parity RAM recalculates an always-valid parity bit each time a byte is read from memory, instead of storing the parity bit when the memory is written to; the calculated parity bit, which will not reveal if the data has been corrupted (hence the name "fake parity"), is presented to the parity-checking logic.

  8. 256-bit computing - Wikipedia

    en.wikipedia.org/wiki/256-bit_computing

    In computer architecture, 256-bit integers, memory addresses, or other data units are those that are 256 bits (32 octets) wide. Also, 256-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers , address buses , or data buses of that size.

  9. Position-independent code - Wikipedia

    en.wikipedia.org/wiki/Position-independent_code

    Multiple base registers could be used, for code or for data. Such instructions require less memory because they do not have to hold a full 24, 31, 32, or 64 bit address (4 or 8 bytes), but instead a base register number (encoded in 4 bits) and a 12–bit address offset (encoded in 12 bits), requiring only two bytes.