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DOS specification
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
DOS_Protected_Mode_Interface
Set of extended DOS memory management services
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
DOS_Protected_Mode_Services
Implementation of the GNU toolchain for DOS
utilities such as Bash, find, tar, ls, GAWK, sed, and ld to DOS Protected Mode Interface (DPMI). Supported languages include C, C++, Objective-C/C++,
DJGPP
API of the MS-DOS operating system
late 1980s, DOS extenders along with the DOS Protected Mode Interface (DPMI) allow the programs to run in either 16-bit or 32-bit protected mode and still
DOS_API
MSDOS-like operating system
memory management including new support for DPMI (DOS Protected Mode Interface) and DPMS (DOS Protected Mode Services) as well as more flexible loadhigh options
DR-DOS
Type of computer software program
of DOS. A DOS extender is a program that "extends" DOS so that programs running in protected mode can transparently interface with the underlying DOS API
DOS_extender
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
Virtual Control Program Interface
Virtual_Control_Program_Interface
32-bit extender for DOS
Professional, PMODE/W and CauseWay DOS Extenders. The DOS Extender includes a built-in Advanced DOS Protected Mode Interface server supporting v0.9 of the
DOS/32
Subsystem for 32-bit Windows for running 16-bit DOS & Windows programs
software (DOS extenders), which has to conform to the DOS Protected Mode Interface (DPMI). When a DOS program running inside a VDM needs to access a peripheral
Virtual_DOS_machine
Software company
12-firm committee that designed the DOS Protected Mode Interface (DPMI). VCPI and DPMI are industry standards allowing DOS extenders to co-exist with expanded
Phar_Lap_Software
Software program expanding DOS memory
executable file. DOS/32 DOS Protected Mode Interface (DPMI) DOS API DOS extender works with Windows, InfoWorld, July 22, 1991 "DOS/4G Release Notes"
DOS/4G
1995 Microsoft operating system version
to run in compatibility mode, the Real Mode Mapper can access it through MS-DOS. 32-bit Windows programs are assigned protected memory segments, which
Windows_95
DOS compatibility layer for Linux
speed for 8086-compatible DOS operating systems and applications on x86 compatible processors, and for DOS Protected Mode Interface (DPMI) applications on
DOSEMU
Type of subroutine
knowledge of where they are located in memory. DOS Protected Mode Interface (DPMI) DOS Protected Mode Services (DPMS) J/Direct Microsoft Layer for Unicode
Thunk
1987 Microsoft operating system version
Virtual Control Program Interface (VCPI) in "standard mode" and with DOS Protected Mode Interface (DPMI) in "386 enhanced" mode. Microsoft ended its support
Windows_2.0
Video board software standard
VBE provide only a real mode interface, which cannot be used without a significant performance penalty from within protected mode operating systems. Consequently
VESA_BIOS_Extensions
Techniques employed to give access to more than 640 kibibytes
(VCPI) Extended Virtual Control Program Interface (XVCPI) DOS Protected Mode Interface (DPMI) DOS Protected Mode Services (DPMS) Helix Cloaking Mueller
DOS_memory_management
Procedure Call DPI—Deep packet inspection DPI—Dots per inch DPMI—DOS Protected Mode Interface DPMS—Display Power Management Signaling DPO—Data Protection Officer
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
Events in the history of 16-bit x86 DOS-family disk operating systems
Developer's Tool Employs DOS For Mainframe-Size Applications, InfoWorld, November 10, 1986 286/DOS-Extender: Build Protected Mode Apps for DOS, PC Magazine, May
Timeline of DOS operating systems
Timeline_of_DOS_operating_systems
Physical memory region on IBM PC compatibles
above) didn't work in Windows 95. Only the DOS Protected Mode Interface (DPMI) API for switching to protected mode was supported. Upper memory blocks can
Upper_memory_area
Section of computer memory in PC compatibles
directly by DOS programs running in protected mode using VCPI or DPMI, two (different and incompatible) methods of using protected mode under DOS. Extended
Extended_memory
CPU to transition from protected mode to real mode because the 286 did not allow the CPU to go from protected mode to real mode unless the CPU is reset
Keyboard controller (computing)
Keyboard_controller_(computing)
text-based user interface was later invented to name this kind of interface. Many MS-DOS text mode applications, like the default text editor for MS-DOS 5.0 (and
History of the graphical user interface
History_of_the_graphical_user_interface
Topics referred to by the same term
DPMI may refer to: DOS Protected Mode Interface Cashmeran (6,7-dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone), a synthetic musk This disambiguation page
DPMI
Microsoft computer operating system
user interface (GUI), in various generations of the graphical Microsoft Windows operating system. IBM licensed and released it in 1981 as PC DOS 1.0 for
MS-DOS
Series of Microsoft operating systems
later versions. MS-DOS support was retained in order to facilitate booting into Windows as well as providing real mode support for DOS. The first version
Windows_9x
1990 Microsoft operating system version
Windows/386 2.0 introduced a protected mode kernel that can multitask several MS-DOS applications using virtual 8086 mode, but all Windows applications
Windows_3.0
BIOS interrupt call for disk access
interrupt call Cylinder-head-sector INT (x86 instruction) DPMI (DOS Protected Mode Interface) Ralf Brown's Interrupt List BIOS Enhanced Disk Drive Specification
INT_13H
programming interface that allow DOS and Win16 applications and device drivers to perform DMA operations while running under protected or virtual 8086 mode. Complete
Virtual_DMA_Services
2000 Microsoft operating system version
user interface, shell and Windows Explorer. Although Windows Me was still ultimately based around MS-DOS like its predecessors, access to real-mode DOS was
Windows_Me
Computer graphics standard from 1987
There are generally two ways to access VGA text-mode for an application: through the Video BIOS interface or by directly accessing video RAM and I/O ports
VGA_text_mode
Family of CP/M- and DOS-compatible multi-user multi-tasking operating systems
May, which would not allow Concurrent DOS 286 to run 8086 software in protected mode. The release of Concurrent DOS 286 had been scheduled for late May
Multiuser_DOS
Feature of specific microprocessor
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
Virtual_8086_mode
64-bit extension of x86 architecture
legacy mode. Protected mode is made into a submode of legacy mode. It is the submode that 32-bit operating systems and 16-bit protected mode operating
X86-64
Computer display standard and resolution
proprietary interfaces and capabilities, continue to implement common VGA graphics modes and interfaces to the present day. The VGA analog interface standard
Video_Graphics_Array
Operating system from IBM
intended as a protected-mode successor of PC DOS targeting the Intel 80286 processor. Notably, basic system calls were modelled after MS-DOS calls; their
OS/2
Operating mode of x86 central processor units
functionality like Advanced Configuration and Power Interface (ACPI). Some uses of the System Management Mode are: Handle system events like memory or chipset
System_Management_Mode
First sector of partitioned PC computer disk
incorrect. The MBR code of OS/2, MS-DOS 2.0 to 8.0, PC DOS 2.0 to 7.10 and Windows NT/2000/XP provides this same interface as well, although these systems
Master_boot_record
Graphics library for Borland compilers on DOS
The Borland Graphics Interface, also known as BGI, is a graphics library that was bundled with several Borland compilers for the DOS operating systems since
Borland_Graphics_Interface
Low level firmware interface to the hardware
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
BIOS_interrupt_call
Memory manager produced by Quarterdeck Office Systems
Memory Specification (XMS), Virtual Control Program Interface (VCPI) and DOS Protected Mode Interface (DPMI). Quickboot: It allows a form of warm reboot
QEMM
Sound software development kit for video games
personal site (KE5FX.com) and contains source code for both real-mode and protected-mode programs. The Miles Sound System was used in its history by over
Miles_Sound_System
Graphical web browser for DOS and Linux
ported it to compile as a 32-bit protected mode extended DOS application (utilizing DPMI using DJGPP, a GNU compiler for DOS), while Arachne is a 16-bit application
Arachne_(web_browser)
Data structure in microprocessors
vector 0x10, MS-DOS provides the DOS API at the vector 0x21, and Linux provides the syscall interface at the vector 0x80. In real mode, the interrupt table
Interrupt_descriptor_table
first released. Microsoft introduced Windows as a graphical user interface for MS-DOS, which had been introduced two years earlier, on August 12, 1981
Microsoft Windows version history
Microsoft_Windows_version_history
1992 Microsoft operating system version
which ran as a shell on top of MS-DOS, its 386 Enhanced Mode functioned as a virtual machine monitor virtualizing DOS as a guest . It was the last Windows
Windows_3.1
Firmware for hardware initialization and OS runtime services
real- and protected-mode portions. The real-mode portion was meant to provide backward compatibility with existing operating systems such as DOS, and therefore
BIOS
Database software
Btrieve via a DOS-based "requester". The requestor required the use of DOS Protected Mode Interface (DPMI) which allowed program access to DOS extended memory
Btrieve
Architecture of computer operating systems
bypassing MS-DOS methods IFSMGR.VXD – 32-bit driver for the installable file system IOS.VXD – I/O supervisor that controls and manages all protected-mode file
Architecture_of_Windows_9x
disk access and caching mode available in older, MS-DOS-based Microsoft Windows operating systems. It was a set of protected mode device drivers that worked
Microsoft_32-bit_disk_access
Connection between computers or programs
application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service
API
Microprocessor model
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
Intel_80286
Multitasking operating system released 1986
MS-WINDOWS 2.xx 286/386 in 8086 mode. In July 1988, IBM announced "IBM DOS 4.0", an unrelated product continuing from DOS 3.3 and 3.4, leading to initial
MS-DOS_4.0_(multitasking)
Word processor
popularity by releasing a version of Word for DOS, version 5.5, that replaced its unique user interface with an interface similar to a Windows application. By
Microsoft_Word
Network system
Novell's DOS Protected Mode Services (DPMS), if loaded, to reduce its conventional memory footprint and run in extended memory and protected mode. The NetWare
Personal_NetWare
Programmable interrupt controller
particular buffered mode and level-triggered mode) and is upward compatible with it. Programming an 8259 in conjunction with MS-DOS and Windows has introduced
Intel_8259
Device driver in MS-DOS
with MS-DOS 4.0 in 1988; the more flexible EMM386.EXE version appeared in MS-DOS 5.0 in 1991. EMM386 uses the processor's virtual 8086 mode. This forces
EMM386
Layer of protection in computer systems
Under DOS, the kernel, drivers and applications typically run on ring 3 (however, this is exclusive to the case where protected-mode drivers or DOS extenders
Protection_ring
Kernel mode debugger
SoftICE is a kernel mode debugger for DOS and Windows up to Windows XP. It is designed to run underneath Windows, so that the operating system is unaware
SoftICE
Text mode multitasking operating environment
better at utilizing memory above DOS's limit. However, in either case, it runs in real mode rather than protected mode, meaning that a misbehaving program
DESQview
Disk compression utility
DoubleSpace's memory areas were not protected, because MS-DOS ran in real mode. Microsoft attempted to remedy this in the MS-DOS 6.2 version of DoubleSpace (via
DriveSpace
PCI-based sound card
CPU into Virtual-86 mode, conflicting with games that utilized a modified form of protected mode, called 'flat mode'. This mode allowed fast, direct
Ensoniq_AudioPCI
Computers derived from the IBM PC
A protected mode OS can also be written for the 80286, but DOS application compatibility was more difficult than expected, not only because most DOS applications
IBM_PC_compatible
Computer operating system
a graphical operating system shell for MS-DOS in response to growing interest in graphical user interfaces (GUIs). The name Windows is a reference to
Microsoft_Windows
memory for DOS programs to run. The interface can also be utilized to run DR DOS as a task under a host operating system such as Concurrent DOS. Since 2018
Remote_Initial_Program_Load
Signal in the system bus of an x86-based computer system
32-bit protected mode or 64-bit long mode. Bug compatibility Computer storage High memory area (HMA) LOADFIX (CONFIG.SYS directive) (PTS-DOS) Incomplete
A20_line
Word processor application
"non-document" mode to create text files without formatting made it popular among programmers as a source-code editor. Like the CP/M versions, the DOS WordStar
WordStar
System of bank switching in DOS memory management
and DOS extenders ended up being regulated by the XMS, Virtual Control Program Interface (VCPI), DOS Protected Mode Interface (DPMI) and DOS Protected Mode
Expanded_memory
C++ IDE
MS-DOS and Microsoft Windows. It was the successor to Turbo C++ and included a better debugger, the Turbo Debugger, which was written in protected-mode DOS
Borland_C++
1988 Microsoft operating system version
since it had introduced a protected mode kernel, and it allows several MS-DOS programs to run in parallel in the virtual 8086 mode of the 80386 processor
Windows_2.1
Sound card for PCs
used a lot of precious DOS conventional memory. Also, if a game used DOS 32-bit protected mode through a non-DPMI compliant DOS extender, then the MPU-401
Sound_Blaster_AWE32
Filesystem API
386 Enhanced Mode by bypassing the 16-bit DOS API and ensuring that no other real mode driver intercepts INT 21h calls. The protected mode counterpart
Installable_File_System
Disk cloning and backup tool
password-protected images. This version dropped OS/2 support. Version 5.0 moved to 386 protected mode. Unlike the text-based user interface of earlier
Ghost_(disk_utility)
Emulator for PowerPC Macs and for Windows
technical foundation for the latter's Windows XP Mode. Windows Virtual PC does not officially support MS-DOS or operating systems older than Windows XP Professional
Virtual_PC
Structure of the operating system
play (PnP) hardware bus. User mode is made up of various system-defined processes and DLLs. The interface between user mode applications and operating system
Architecture_of_Windows_NT
also runs under MS-DOS and PC DOS. It has more flexible load-high capabilities, also allowing to relocate and run in protected mode through DPMS on 286
MSCDEX
Boot loader for Microsoft Windows
which is responsible for some preparations such as switching the CPU to protected mode. When a user chooses an operating system from the boot menu, the following
NTLDR
Former front-end to DOS
PC DOS developed by IBM, announced in August 1984 and shipped in March 1985. TopView provided a text-mode (although it also ran in graphics mode) operating
TopView
IBM PC compatible home computer system
and uses a boot disk to boot into Apple mode. The boot disk has both DOS and Apple software and is copy-protected. Compatibility is fairly good and allows
Tandy_1000
British computer
MS-DOS 3.1 but was not IBM PC compatible. The PC-186 could run Windows versions up to and including Windows 3.0, but only in real mode, as protected mode
RM_Nimbus
extension, DOS Wedge, file manager, machine code monitor, fast loader, BIOS setup screen. Today's computer mice can be attached via the Micromys interface that
Commodore_64_peripherals
Defunct American technology company
about $43 million. Hifn Novell DOS 7, OpenDOS 7.01, DR-DOS 7.02 and higher PC DOS 7 and PC DOS 2000 DOS Protected Mode Services Multimedia Stacker Disk
Stac_Electronics
Collaborative Apple Computer and Novell prototype operating system
in different virtual DOS machines (comparable to Windows 386 Enhanced Mode but without a GUI). Thereby, the previously loaded DOS environment including
Star_Trek_project
Expansion card standard for laptop computers
68 pin PC Card interface. It includes a setting for the interface mode of either "memory" (using the limited PC Card addressing mode) or "ATA storage"
PC_Card
Floppy disk drive
includes a newer DOS, version 3.1, replaces the MOS Technology CIA interface chip, of which only a few features were used by the 1571 DOS, with a very much
Commodore_1571
Real-time operating system
to protected mode and running DOS in a virtual machine within an RMX task. This combination provides RMX real-time functionality as well as full DOS services
RMX_(operating_system)
Line of home computers
supporting a 640×416 interlaced mode. It includes a SCSI interface, stereo A/D and D/A conversion, an optional MIDI interface, and an optional board to upgrade
TRS-80_Color_Computer
Discontinued modular real-time multiuser multitasking operating system
were executed in the processor's protected mode. Due to bugs in earlier steppings of the Intel 80286, the FlexOS 286 DOS front-end required at least the
FlexOS
Spreadsheet software
developers had seriously considered the graphical user interface (GUI) to supplement their DOS offerings, and so they responded slowly to Microsoft's
Lotus_1-2-3
Development of the 1995 iteration of Windows
was to develop a 32-bit underlying kernel and filesystem with 32-bit protected mode device drivers in Windows for Workgroups 3.11, to be used as the basis
Development_of_Windows_95
DOS device driver
Multiuser DOS. Lead-in prefix '>' is only supported in Japanese versions of MS-DOS, PC DOS and DR-DOS ANSI.SYS to access special Japanese display modes. This
ANSI.SYS
Multiplatform BBS Software
developer is Stephen Hurd. UIFC is a text user interface library which provides the menuing system to the text mode configuration utilities bundled with Synchronet
Synchronet
Core of a computer operating system
instruction that causes the processor to change mode. An example would be from supervisor mode to protected mode. This is where the operating system performs
Kernel_(operating_system)
Computer storage interface standard
Attachment, also known as Integrated Drive Electronics (IDE), is a standard interface designed for IBM PC-compatible computers. It was first developed by Western
Parallel_ATA
Portable emulator and PC debugger
Public License. It supports emulation of the processor(s) (including protected mode), memory, disks, display, Ethernet, BIOS and common hardware peripherals
Bochs
File archiver
to 1000% of protected data size. 6.11 (2022-03): Support of Gzip archives with large archive comments has been added; In command line mode, the switch
WinRAR
Instructions directly executable by a computer
that are controlled using machine instructions: segment registers protected address mode binary-coded decimal (BCD) arithmetic The criteria for instruction
Machine_code
Disk operating system
SpartaDOS X (or SpartaDOS 4.0) is a disk operating system for the Atari 8-bit computers that closely resembles MS-DOS. It was developed and sold by ICD
SpartaDOS_X
PDP-11-based personal computer (1982)
inflexible, offering few advantages over the command-line based MS-DOS user interface that was coming into widespread use.[citation needed] Other available
DEC_Professional
BASIC dialect
based on BASIC licensed under the GNU GPL for Microsoft Windows, protected-mode MS-DOS (DOS extender), Linux, FreeBSD and Xbox. The Xbox version is no longer
FreeBASIC
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
Female
English
 Short form of English Rosalind, ROS means "weak horse." Compare with another form of Ros.
Male
English
Medieval pet form of English Robert, DOB means "bright fame."
Surname or Lastname
English
English : nickname for someone supposedly resembling a mole (the burrowing mammal), Middle English mol(le) (from Dutch or Low German mol), for example in having poor eyesight.English : nickname for someone with a prominent mole or blemish on the face, from Middle English mole (Old English mÄl).English : from an Old English masculine personal name, Moll.English : from Old Norse moli ‘crumb’, ‘grain’, possibly a nickname for a small man.French : metonymic occupational name for a knife grinder or a maker of whetstones, from a variant of meule ‘whetstone’, ‘grindstone’, ‘millstone’.Italian : variant of Mule.Slovenian : probably a nickname for a extremely religious man, from mole ‘zealot’, a derivative of moliti ‘to pray’.
Female
Yiddish
(×”Ö¸×דֶע) Yiddish form for Hebrew Hadaccah, HODE means "myrtle tree."
Surname or Lastname
English (Suffolk, Essex)
English (Suffolk, Essex) : unexplained.French : habitation name from Moye in Haute-Savoie.Dutch (de Moye) : nickname from Middle Dutch moy, moeie, ‘fine’, ‘handsome’, denoting a well-dressed person or a dandy.Spanish : see Moya.
Male
English
Short form of English Donald, DON means "world ruler."
Female
German
 Short form of German Rosamund, ROS means "horse-protection." Compare with another form of Ros.
Boy/Male
American, Australian, British, English
Short Form of Name Starting with Des
Male
Hungarian
Hungarian name ÃKOS means "white falcon."
Surname or Lastname
English
English : see Fosse.Dutch (de Vos) : nickname for someone with red hair, from vos ‘fox’.North German : variant of Voss.
Surname or Lastname
English (Surrey)
English (Surrey) : unexplained. Compare Moad.
Male
English
Short form of English Moses, MOSE means "drawn out."
Male
English
Short form of English Dominic, DOM means "belongs to the lord."
Female
Japanese
(èŒ) Japanese name MOE means "budding."
Female
English
Pet form of English Dorothy, DOT means "gift of God."
Male
Hebrew
(דּï‹×‘) Hebrew name DOV means "bear."
Male
Hawaiian
Hawaiian form of Hebrew Moshe, MOKE means "drawn out."
Boy/Male
Australian, Basque, Celtic, Scottish, Swedish
Gentle Horse; Horse Protector; From the Peninsula
Male
English
Pet form of English Moses, MOE means "drawn out."
Girl/Female
Australian, German, Irish, Jamaican, Latin, Malaysian
Gentle Horse; Renowned Protector; Pretty Rose
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
Boy/Male
Muslim
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Boy/Male
Hebrew
First born.
Surname or Lastname
English
English : probably a variant of Farlow.
Boy/Male
Hindu, Indian
Whole
Girl/Female
Arabic, Assamese, Bengali, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Telugu
Flower; Fruit; A Lovely Quite
Boy/Male
Hindu
Amiable
Boy/Male
Arabic, Australian
Gabriel is the English Language Equivalent; A Biblical Name Not Used for Humans
Girl/Female
Hindu
Free from bondage
Boy/Male
Hindu
Girl/Female
Indian
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
DOS PROTECTED-MODE-INTERFACE
n.
Something intended to serve, or that may serve, as a pattern of something to be made; a material representation or embodiment of an ideal; sometimes, a drawing; a plan; as, the clay model of a sculpture; the inventor's model of a machine.
a.
Suitable to be taken as a model or pattern; as, a model house; a model husband.
adv.
With an adjective or adverb (instead of the suffix -er) to form the comparative degree; as, more durable; more active; more sweetly.
v. t.
To mark with dots or small spots; as, to dot a line.
n.
A fellow; -- used humorously or contemptuously; as, a sly dog; a lazy dog.
a.
Having no protector; unprotected.
a., adv., & n.
More. See Mo.
n.
Any combination of qualities or relations, considered apart from the substance to which they belong, and treated as entities; more generally, condition, or state of being; manner or form of arrangement or manifestation; form, as opposed to matter.
v. t.
To form holes in, as a mole; to burrow; to excavate; as, to mole the earth.
n.
Manner of doing or being; method; form; fashion; custom; way; style; as, the mode of speaking; the mode of dressing.
v. t.
To plan or form after a pattern; to form in model; to form a model or pattern for; to shape; to mold; to fashion; as, to model a house or a government; to model an edifice according to the plan delineated.
v. t.
To make more; to increase.
v. t.
To hunt or track like a hound; to follow insidiously or indefatigably; to chase with a dog or dogs; to worry, as if by dogs; to hound with importunity.
v. i.
To make dots or specks.
n.
Prevailing popular custom; fashion, especially in the phrase the mode.
v. t.
To cover or shield from danger or injury; to defend; to guard; to preserve in safety; as, a father protects his children.
n.
The scale as affected by the various positions in it of the minor intervals; as, the Dorian mode, the Ionic mode, etc., of ancient Greek music.
imp. & p. p.
of Protect
n.
Any copy, or resemblance, more or less exact.