• In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs). It...
    48 KB (4,370 words) - 09:11, 13 May 2025
  • The Intel 80386 featured three operating modes: real mode, protected mode and virtual mode. The protected mode which debuted in the 80286 was extended...
    57 KB (6,594 words) - 16:42, 9 May 2025
  • 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...
    26 KB (2,741 words) - 23:28, 23 June 2024
  • 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...
    10 KB (1,508 words) - 10:08, 25 June 2024
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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...
    105 KB (10,776 words) - 12:49, 18 April 2025
  • 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...
    39 KB (3,681 words) - 17:13, 29 March 2025
  • 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...
    15 KB (1,327 words) - 13:36, 26 January 2024
  • 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...
    23 KB (3,302 words) - 22:29, 14 May 2025
  • 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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    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...
    30 KB (3,304 words) - 05:49, 16 May 2025
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    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...
    120 KB (12,070 words) - 12:54, 14 May 2025
  • 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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    (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)...
    31 KB (3,861 words) - 01:34, 14 April 2025
  • 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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  • 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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  • 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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  • (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...
    56 KB (5,724 words) - 13:59, 16 May 2025
  • 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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  • 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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  • 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