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DOS and Virtual Control Program Interface

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between DOS and Virtual Control Program Interface

DOS vs. Virtual Control Program Interface

DOS is a family of disk-based operating systems for IBM PC compatible computers. In computing, the Virtual Control Program Interface (VCPI) is a specification published in 1989 by Phar Lap Software that allows a DOS program to run in protected mode, granting access to many features of the processor not available in real mode.

Similarities between DOS and Virtual Control Program Interface

DOS and Virtual Control Program Interface have 14 things in common (in Unionpedia): BIOS, Digital Research, DOS, EMM386, Expanded memory, Intel, Microsoft, Multiuser DOS, OS/2, PCMag, QEMM, Real mode, Virtual 8086 mode, Virtual DOS machine.

BIOS

In computing, BIOS (Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup).

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Digital Research

Digital Research, Inc. (DR or DRI) was a privately held American software company created by Gary Kildall to market and develop his CP/M operating system and related 8-bit, 16-bit and 32-bit systems like MP/M, Concurrent DOS, FlexOS, Multiuser DOS, DOS Plus, DR DOS and GEM.

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DOS

DOS is a family of disk-based operating systems for IBM PC compatible computers.

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EMM386

EMM386 is the expanded memory manager of Microsoft's MS-DOS, IBM's PC DOS, Digital Research's DR-DOS, and Datalight's ROM-DOS which is used to create expanded memory using extended memory on Intel 80386 CPUs.

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Expanded memory

In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional memory (640 KiB).

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Intel

Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and incorporated in Delaware.

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Microsoft

Microsoft Corporation is an American multinational corporation and technology company headquartered in Redmond, Washington.

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Multiuser DOS

Multiuser DOS is a real-time multi-user multi-tasking operating system for IBM PC-compatible microcomputers.

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OS/2

OS/2 (Operating System/2) is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci.

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PCMag

PC Magazine (shortened as PCMag) is an American computer magazine published by Ziff Davis.

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QEMM

Quarterdeck Expanded Memory Manager (QEMM) is a memory manager produced by Quarterdeck Office Systems in the late 1980s through the late 1990s.

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Real mode

Real mode, also called real address mode, is an operating mode of all x86-compatible CPUs.

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Virtual 8086 mode

In the 80386 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 of running directly in protected mode while the processor is running a protected mode operating system.

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Virtual DOS machine

Virtual DOS machines (VDM) refer to a technology that allows running 16-bit/32-bit DOS and 16-bit Windows programs when there is already another operating system running and controlling the hardware.

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The list above answers the following questions

DOS and Virtual Control Program Interface Comparison

DOS has 210 relations, while Virtual Control Program Interface has 33. As they have in common 14, the Jaccard index is 5.76% = 14 / (210 + 33).

References

This article shows the relationship between DOS and Virtual Control Program Interface. To access each article from which the information was extracted, please visit: