Long mode information

architecture, long mode is the mode where a 64-bit operating system can access 64-bit instructions and registers. 64-bit programs are run in a sub-mode called...

Real mode, also called real address mode, is an operating mode of all x86-compatible CPUs. The mode gets its name from the fact that addresses in real...

processors support five modes of operation for x86 code, Real Mode, Protected Mode, Long Mode, Virtual 86 Mode, and System Management Mode, in which some instructions...

multiplies the interrupt vector by the entry size (8 for protected mode, 16 for long mode) and adds the result to the IDT base address. If the address is...

processors PAE mode must be active before the switch to long mode, and must remain active while long mode is active, so while in long mode there is no "non-PAE"...

In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs). It...

CPUs. It occupies bits 12 and 13 in the FLAGS register. In protected mode and long mode, it shows the I/O privilege level of the current program or task....

microprocessor and later, virtual 8086 mode (also called virtual real mode, V86-mode, or VM86) allows the execution of real mode applications that are incapable...

System Management Mode (SMM, sometimes called ring −2 in reference to protection rings) is an operating mode of x86 central processor units (CPUs) in which...

Airplane mode (also known as aeroplane mode, flight mode, offline mode, or standalone mode) is a setting available on smartphones and other portable devices...

Depeche Mode are an English electronic music band formed in Basildon, Essex in 1980. Originally formed by the lineup of Dave Gahan, Martin Gore, Andy Fletcher...

Real mode, or Virtual 8086 mode. v8086 is not an option in Long mode. This means that a modern operating system, which operates in Protected mode (32 bit)...

In cryptography, a block cipher mode of operation is an algorithm that uses a block cipher to provide information security such as confidentiality or authenticity...

A mode of transport is a method or way of traveling, or of transporting people or cargo. The different modes of transport include air, water, and land...

In x86 computing, unreal mode, also big real mode, flat real mode, or voodoo mode is a variant of real mode, in which one or more segment descriptors has...

bytes). The page table structure used by x86-64 CPUs when operating in long mode further extends the page table hierarchy to four or more levels, extending...

Safe mode is a diagnostic mode of a computer operating system (OS). It can also refer to a mode of operation by application software. Safe mode is intended...

register is 32 bits long on the 386 and higher processors. On x64 processors in long mode, it (and the other control registers) is 64 bits long. CR0 has various...

A normal mode of a dynamical system is a pattern of motion in which all parts of the system move sinusoidally with the same frequency and with a fixed...

Sabbath mode, also known as Shabbos mode (Ashkenazi pronunciation) or Shabbat mode, is a feature in many modern home appliances, including ovens, dishwashers...

operating systems. x86-64 processors can be run in one of two states: long mode provides larger physical address spaces and the ability to run 64-bit...

then half carry is rare, since BCD math no longer common, and it even has limited support on long mode on x86-64). In the i286 architecture, the register...

Command mode and Data mode refers to the two modes in which a computer modem may operate. These modes are defined in the Hayes command set, which is the...

CCM mode (counter with cipher block chaining message authentication code; counter with CBC-MAC) is a mode of operation for cryptographic block ciphers...

The meaning of maintenance mode depends on the context. In the world of software development, it refers to a point in a computer program's life when it...

Addressing modes are an aspect of the instruction set architecture in most central processing unit (CPU) designs. The various addressing modes that are...

data structures. While real mode segments are always 64 KB long, the practical effect is only that no segment can be longer than 64 KB, rather than that...