In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs). It...
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X86 assembly language (redirect from X86-assembly language in protected mode)
The Intel 80386 featured three operating modes: real mode, protected mode and virtual mode. The protected mode which debuted in the 80286 was extended...
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computing, the DOS Protected Mode Interface (DPMI) is a specification introduced in 1989 which allows a DOS program to run in protected mode, giving access...
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created in real mode, but are subject to protected mode's memory paging mechanism. The virtual 8086 mode is a mode for a protected-mode task. Consequently...
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possible to emulate real mode on other systems when starting in other modes. The 80286 architecture introduced protected mode, allowing for (among other...
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X86 (section Protected mode)
slower in protected mode than in real mode, and changing segments very frequently is to be avoided. Actual memory operations using protected mode segments...
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DOS Protected Mode Services (DPMS) is a set of extended DOS memory management services to allow DPMS-enabled DOS drivers to load and execute in extended...
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driver. However unreal mode is incompatible with protected mode operating systems such as Windows 3.x/9x/NT and OS/2. Big real mode has a 1 MiB code segment...
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X86 memory segmentation (section Protected mode)
memory and memory protection; the original mode was renamed real mode, and the new version was named protected mode. The x86-64 architecture, introduced in...
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mode, while 32-bit programs and 16-bit protected mode programs are executed in a sub-mode called compatibility mode. Real mode or virtual 8086 mode programs...
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Intel 80286 (section Protected mode)
protected mode can (or must) be used in real mode to set up and switch to protected mode, and a few (such as SMSW and LMSW) are useful for real mode itself...
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X86-64 (redirect from 64-bit compatibility mode)
legacy mode. Protected mode is made into a submode of legacy mode.: 14 It is the submode that 32-bit operating systems and 16-bit protected mode operating...
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JMP (x86 instruction) (section Protected Mode)
only in protected mode or unreal mode. JMP 0x56789AB1 Example three: Jump to the value stored in the EAX register, only in protected mode. JMP EAX The...
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processor 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...
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8086 mode allows the creation of a virtual machine, enabling programs that require real mode to run within a protected mode environment. Protected mode is...
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Protection ring (redirect from Supervisor mode)
(however, this is exclusive to the case where protected-mode drivers or DOS extenders are used; as a real-mode OS, the system runs with effectively no protection)...
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IA-32 (section Operating modes)
modes that operate on the IA-32 ISA for backwards compatibility. Even given the contemporary prevalence of x86-64, as of today, IA-32 protected mode versions...
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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...
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INT (x86 instruction) (section Real mode)
the interrupt table to be executed. INT is widely used in real mode. In protected mode, INT is a privileged instruction. When generating a software interrupt...
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run in protected mode, granting access to many features of the processor not available in real mode. It was supplanted by DOS Protected Mode Interface...
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protected-mode operating system such as Microsoft Windows can also run real-mode programs and provide expanded memory to them. The DOS Protected Mode...
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VESA BIOS Extensions (redirect from VESA display modes)
VBE provide only a real mode interface, which cannot be used without a significant performance penalty from within protected mode operating systems. Consequently...
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Mandatory Integrity Control (redirect from Internet Explorer Protected Mode)
(2010-07-10). "Introducing Adobe Reader Protected Mode". Adobe Systems. Retrieved 2010-09-10. "Plan Protected View settings for Office 2010". Microsoft...
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debugging. The 386 featured three operating modes: real mode, protected mode and virtual mode. The protected mode, which debuted in the 286, was extended...
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Virtual DOS machine (redirect from 8086 emulation mode)
to these protected mode operating systems, DOS, by default, is a real-mode operating system, switching to protected mode and virtual 86 mode only on behalf...
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Windows 3.0 (redirect from 386 Enhanced Mode)
its protected mode; 386 Enhanced mode, intended for newer computers with an Intel 80386 processor or above, and corresponding to its protected mode and...
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software to run in a protected mode environment even though the host operating system is only capable of operating in real mode. DOS extenders were initially...
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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)...
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address mode (Real Mode) of the x86 CPU, so programs that call BIOS either must also run in real mode or must switch from protected mode to real mode before...
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Control register (redirect from Supervisor mode execution protection)
12 bits are used for the process-context identifier (PCID). Used in protected mode to control operations such as virtual-8086 support, enabling I/O breakpoints...
38 KB (1,706 words) - 18:26, 9 January 2025