EMM386 and Virtual Control Program Interface

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

Difference between EMM386 and Virtual Control Program Interface

EMM386 vs. Virtual Control Program Interface

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. 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 EMM386 and Virtual Control Program Interface

EMM386 and Virtual Control Program Interface have 8 things in common (in Unionpedia): CEMM, Digital Research, Expanded memory, Microsoft, Protected mode, QEMM, Virtual 8086 mode, Windows 3.0.

CEMM

CEMM, for Compaq Expanded Memory Manager was the first so-called PC "memory manager" for Intel 80386 CPUs, able to provide expanded memory (EMS) emulation by using the virtual memory features and the virtual 8086 mode of the CPU.

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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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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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Microsoft

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

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Protected mode

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

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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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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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Windows 3.0

Windows 3.0 is the third major release of Microsoft Windows, launched in 1990.

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The list above answers the following questions

What EMM386 and Virtual Control Program Interface have in common
What are the similarities between EMM386 and Virtual Control Program Interface

EMM386 and Virtual Control Program Interface Comparison

EMM386 has 35 relations, while Virtual Control Program Interface has 33. As they have in common 8, the Jaccard index is 11.76% = 8 / (35 + 33).

References

This article shows the relationship between EMM386 and Virtual Control Program Interface. To access each article from which the information was extracted, please visit:

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