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Type of computer software program
A DOS extender is a computer software program running under DOS that enables software to run in a protected mode environment even though the host operating
DOS_extender
32-bit extender for DOS
DOS/32 is a 32-bit DOS extender created for replacing DOS/4GW extender and compatibles. This extender can be used in various environments, from embedded
DOS/32
Software program expanding DOS memory
DOS/4G is a 32-bit DOS extender developed by Rational Systems (later Tenberry Software). It allows DOS programs to eliminate the 640 KB conventional memory
DOS/4G
Events in the history of 16-bit x86 DOS-family disk operating systems
Phar Lap Adds EMS, Windows Support To DOS Extender Development Kit, InfoWorld, April 1, 1991 Phar Lap DOS Extender Uses XMS, PC Magazine, June 11, 1991
Timeline of DOS operating systems
Timeline_of_DOS_operating_systems
Executable file format used for .EXE files in MS-DOS
Watcom's WLINK; additionally, FASM can create them directly. DOS DOS extender Portable Executable DOS API Executable compression Paul, Matthias R. (2002-10-07)
DOS_MZ_executable
Software company
embedded development; cross tools for embedded development; and 286|DOS-Extender, a DOS extender that emulated an OS/2 environment, complete with the OS/2 API
Phar_Lap_Software
DOS specification
(virtual DPMI host) or by a DOS extender (real DPMI host). The DPMI kernel can be a part of a DOS extender such as in DOS/4GW or DOS/32A, or separate, like
DOS_Protected_Mode_Interface
Comprehensive list of features of x86-based computers
url-status (link) Paul, Matthias R. (2002-04-01). "Fix for CauseWay DOS extender under DR-DOS 7.0x EMM386.EXE". Newsgroup: comp.os.msdos.programmer. Retrieved
Ralf_Brown's_Interrupt_List
Open source clone of MS-DOS
support for MS-DOS, such as internationalization, or the Advanced Power Management TSRs. Furthermore, with the use of HX DOS Extender, many Windows Console
FreeDOS
Japanese personal computer
MS-DOS and the Phar Lap DOS extender (RUN386.EXE). Most games for the system were written in protected mode Assembly and C using the Phar Lap DOS extender
FM_Towns
API of the MS-DOS operating system
Comparison of DOS operating systems DOS Protected Mode Interface (DPMI) DOS extender DOS MZ executable COMMAND.COM Ray Duncan (1988). Advanced MS-DOS Programming:
DOS_API
Topics referred to by the same term
printing inks KC-10 Extender, an air-to-air tanker aircraft Meat extender Media extender Seafood extender or Surimi Tele extender, a secondary lens for
Extender
Topics referred to by the same term
native Xbox 360 compressed audio format extended memory area; an addressable region of memory under a DOS Extender Expanded Memory Adapter, an IBM standard
XMA
Implementation of the GNU toolchain for DOS
suite for Intel 80386-level and above, IBM PC compatibles which supports DOS operating systems. It is guided by DJ Delorie, who began the project in 1989
DJGPP
Line-oriented debug utility in DOS
"Japheth" Grech, the author of the HX DOS extender, developed enhanced DEBUG versions 0.98 to 1.25, and former PC DOS developer Vernon C. Brooks added versions
Debug_(command)
Set of extended DOS memory management services
load and execute in extended memory and protected mode. Not being a DOS extender by itself, DPMS is a minimal set of extended DOS memory management services
DOS_Protected_Mode_Services
Programming language
libraries, which are a protected mode DOS extender (based on Thomas Pytel's, AKA Tran's PMODE30B + PMODE307 DOS extenders), and a library of functions callable
ACC_(programming_language)
Executable packer software
(DOS extender, as generated by Borland C/Pascal compilers) COFF executables, used by DJGPP2 a.out format, BSD i386 (removed) Raw 8086/DOS files: DOS/COM
UPX
BASIC dialect
licensed under the GNU GPL for Microsoft Windows, protected-mode MS-DOS (DOS extender), Linux, FreeBSD and Xbox. The Xbox version is no longer maintained
FreeBASIC
Program used to emulate Motorola 68000-based Macintosh programs
equivalent Win32 or POSIX API calls. The MS-DOS version of Executor runs using the CWSDPMI protected mode DOS extender. Executor translates 68k big-endian binary
Executor_(software)
POSIX-compatible programming environment for DOS and OS/2
EMX (Eberhard Mattes eXtender; also known as emx+gcc) is a programming environment for MS-DOS and OS/2. It allows creating and executing of 32-bit mode
EMX_(programming_environment)
Phoenix software company, developer of DOS/4GW and DOS/4G protected-mode extenders
MS-DOS. DOS extenders were essential during the early 1990s because DOS itself could not directly address memory above 1 MB; a protected-mode extender allowed
Tenberry_Software
Integrated development environment product
required a 386 processor plus the included DOS extender, 386MAX, though for users to be able to target DOS extenders in their own programs they write, one
Microsoft_Visual_C++
MSDOS-like operating system
DR-DOS is a disk operating system for IBM PC compatibles, originally developed by Gary A. Kildall's Digital Research and derived from Concurrent PC DOS 6
DR-DOS
Assembler for Intel microprocessors
(1993) was shipped as a "bi-modal" (win32, i.e. PE) DOS-extended binary (using the Phar Lap TNT DOS extender). However, the setup.exe is an MZ executable so
Microsoft_Macro_Assembler
64-bit extension of x86 architecture
possible to enter long mode under DOS without a DOS extender, but the user must return to real mode in order to call BIOS or DOS interrupts. It may also be possible
X86-64
First 640 KB of RAM under DOS
specifications for DOS extenders were VCPI- and later DPMI-compatible with Windows 3.x. The most notable DPMI-compliant DOS extender may be DOS/4GW, shipping
Conventional_memory
Commercial product for developing code
Rational Systems DOS/4GW extender". Archived from the original on 2014-11-10. "How 5 years of burning ambition brought Retro City Rampage to DOS". Gamasutra
Watcom_C/C++
Computing extender by Charles W. Sandmann
similar to other 32-bit DPMI hosts such as HDPMI32, which is part of HX DOS Extender. CWSDPMI r7 is free and open-source software. CWSDSTUB.EXE is a stub
CWSDPMI
1997 action-adventure game
using Visual C++ v2.0. The DOS version was developed using Watcom C/C++ v10, Microsoft MASM 6.1, and Rational Systems DOS extender (DOS4GW) v 1.97. The program
Grand_Theft_Auto_(video_game)
1990 Microsoft operating system version
physics professor from the University of Arizona who had developed a DOS extender and a debugging program that works with protected mode applications.
Windows_3.0
Operating mode of all x86-compatible CPUs
not emulated, DOS) and DOS extenders like DOS/4GW to allow protected mode programs to run under DOS; the DPMI system or DOS extender switches to real
Real_mode
Linux and most other versions of Unix), Mach-O (on macOS and iOS) and MZ (on DOS). Metadata is casually used to describe the controlling data used in software
Comparison of executable file formats
Comparison_of_executable_file_formats
Executable file format
using Wine. The HX DOS Extender also uses the PE format for native DOS 32-bit binaries, and can execute some Windows binaries in DOS, thus acting like
Portable_Executable
the portions of the DPMI that crossed into DOS extender territory - specifically, direct support of the DOS and ROM BIOS interrupts in protected mode.
Virtual Control Program Interface
Virtual_Control_Program_Interface
Programming term
into the HMA.) Paul, Matthias R. (2002-04-01). "Fix for CauseWay DOS extender under DR-DOS 7.0x EMM386.EXE". Newsgroup: comp.os.msdos.programmer. Retrieved
Bug_compatibility
Computer program that returns control to a non-multitasking OS without exiting
when they are opened. Additionally, without the use of a DOS extender, all programs in DOS must be loaded into the first 640 KB of RAM (the conventional
Terminate-and-stay-resident program
Terminate-and-stay-resident_program
Flag bit in the CPU relating to interrupts
flag if the application is unprivileged. Some old DOS programs that use a protected mode DOS extender and install their own interrupt handlers (usually
Interrupt_flag
Section of computer memory in PC compatibles
In DOS memory management, extended memory refers to memory above the first megabyte (220 bytes) of address space in an IBM PC or compatible with an 80286
Extended_memory
Computer operating system for x86 processors
PTS-DOS (also punctuated as PTS/DOS) is clone of Microsoft's disk operating system, MS-DOS, developed in Russia by PhysTechSoft and Paragon Technology
PTS-DOS
Operating system from IBM
than one DOS application at a time. This was so effective that it allowed OS/2 to run a modified copy of Windows 3.0, itself a DOS extender, including
OS/2
Raster graphics editor
Handheld game console GP2X, and the Windows version can be used on MS-DOS thru HX DOS Extender. PKM (Sunset Design) (This is a custom format used only by GrafX2
GrafX2
Topics referred to by the same term
Compressed work schedule, a term for the four-day workweek CWSDPMI, a DOS extender by Charles W. Sandmann This disambiguation page lists articles associated
CWS
Family of operating systems for IBM PC compatibles
DOS/360 from 1966. Others include Apple DOS, Apple ProDOS, Atari DOS, Commodore DOS, TRSDOS, and AmigaDOS. IBM PC DOS (and the separately sold MS-DOS)
DOS
Microsoft computer operating system
MS-DOS compatible systems include: IBM PC DOS DR-DOS, Novell DOS, OpenDOS FreeDOS PTS-DOS ROM-DOS Microsoft made IBM PC DOS for IBM. It and MS-DOS were
MS-DOS
Mathematical optimization modeling system
Corporation, is awarded INFORMS Computing Society Prize 1990 32 bit Dos Extender 1990 GAMS moves to Georgetown, Washington, D.C. 1991 Mixed Integer Non-Linear
General algebraic modeling system
General_algebraic_modeling_system
1992 video game
Gate uses a custom DOS extender called "Voodoo" which puts the CPU in an unreal mode and is incompatible with other DOS extenders following the DPMI standard
Ultima_VII:_The_Black_Gate
Topics referred to by the same term
EMX or EmX may refer to: emx+gcc, a DOS extender and DOS and OS/2 programming environment Emx (underground car) Emerald Express (EmX), a bus rapid transit
EMX
Free compiler and IDE for Pascal and ObjectPascal
in the Turbo Pascal dialect which produced 32-bit code for the GO32v1 DOS extender, (developed and used by the DJ's GNU Programming Platform project). Originally
Free_Pascal
Sound card for PCs
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
3D computer graphics program
own scripting language. The original 3D Studio product was created for the DOS platform by the Yost Group, and published by Autodesk. The release of 3D
Autodesk_3ds_Max
Flash file system
exFAT file-system reader and requires the HX DOS extender to work. There are no native exFAT real-mode DOS drivers, which would allow usage of, or booting
ExFAT
2D animation software
other DOS software from that time, Animator was not restricted by the 640 kilobyte conventional memory limitation as it utilized a DOS extender by Phar
Autodesk_Animator
Sound card for IBM PC compatibles
chose to use them, but this led to errors for games that used the DOS/4GW DOS extender, which was common in the UltraSound's era. The two principal software
Gravis_UltraSound
Microsoft's core set of application programming interfaces on Windows
compatibility. DosWin32 and HX DOS Extender are other projects which emulate the Windows API to allow executing simple Windows programs from a DOS command line
Windows_API
Subsystem for 32-bit Windows for running 16-bit DOS & Windows programs
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
Virtual_DOS_machine
Branch of object-oriented derivatives of Pascal programming language
compiler for mainly OS/2 and Microsoft Windows. Later, it also received a DOS+ Extender and an experimental Linux cross-compiler. The compiler's development
Object_Pascal
Division of computer's primary memory into separately relocatable segments or sections
into "protected mode" by software, usually the operating system or a DOS extender. If a program does not use the segment registers, or only puts values
Memory_segmentation
Operational mode of x86-compatible CPUs
still used for running applications, e.g. DPMI compatible DOS extender programs (through virtual DOS machines) or Windows 3.x applications (through the Windows
Protected_mode
Variant of real mode in x86 computing
is used in Grysztar's open-source FASM and Helix RM386, a commercial DOS Extender bundled by Logitech mouse drivers. Grysztar wrote a description of techniques
Unreal_mode
be developed to allow running DOS extender programs. The first CEMM compatible with VCPI was 4.0, provided with Compaq DOS 4.01. Compaq filed for a patent
CEMM
Short and simple version of a method
expanded or extended memory as well as similar stubs to allow the relocated code to communicate with real-mode DOS in conjunction with DOS extenders (like DPMI
Method_stub
commands provided by the MS-DOS disk operating system (DOS), especially as used on an IBM PC compatible computer. Other DOS variants as well as the legacy
List_of_DOS_commands
Programming language
originally built on Watcom C/C++, which used the DOS/4GW memory extender to access expanded and extended memory. It could also use almost all available
FoxPro
1995 video game
game was developed using C++ and 80x86 assembly and used the Phar Lap DOS extender. Internally, the game used a custom script language for world management
BioForge
Computer operating system
IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System), also known as IBM DOS or PC DOS, is a discontinued disk operating system for
IBM_PC_DOS
managers. Demo, trial or lite version available at no cost. Part of MS-DOS/PC DOS. Alexander Koblov also known as alexx2000. File Explorer previously known
Comparison_of_file_managers
Originally used by the OS/2 operating system and adopted by various DOS extenders, it also served as the file format for Virtual Device Drivers (VxD)
Linear_Executable
DoubleDOS was a computer program that extended the IBM PC DOS operating system with limited multitasking capabilities. The program partitioned the computer's
DoubleDOS
1994 video game
known as Voodoo Memory at Origin, Ultima VIII used a more conventional DOS extender. An open-source project called Pentagram aims to create an engine capable
Ultima_VIII:_Pagan
1992 video game
extenders. The fix had a large impact on all DOS games, that used the same DOS Extender. Computer Gaming World in January 1994 criticized Speed Racer, stating
Speed Racer in The Challenge of Racer X
Speed_Racer_in_The_Challenge_of_Racer_X
PC accessory for the Macintosh
users to run MS-DOS software for the IBM PC by clipping a unit onto the chassis of the Macintosh 128K, and included a keyboard extender to provide the
MacCharlie
Software companies of the United Kingdom
1989, LPA started work on a new 32-bit Prolog compiler which could use DOS-extender technology to access up to 4GB memory. This became the basis for LPA
Logic_Programming_Associates
scrdrv design was heavily influenced by the graphics subsystem of the DJ DOS extender and some concepts from the SANE project. The basic problem that scrdrv
General_Graphics_Interface
Software reverse engineering tool
of IDA did not have a graphical user interface (GUI), and ran as an extended DOS, OS/2, or Windows console application. In 1999, DataRescue released the
Interactive_Disassembler
C header file
SyncTERM's ciolib. The version of <conio.h> from DJ Delorie for the GO32 extender is particularly extensive. Schildt, Herbert (1995). C: The Complete Reference
Conio.h
Release of the Slackware Linux distribution
application. Instead, software such as a 32-bit DOS version of Info-ZIP compiled with a DOS extender, Info-ZIP on Linux, WinZip, 7-Zip, or another similarly
ZipSlack
1993 video game
The game runs in protected mode, using Borland C++'s Ergo DPMI / RTM DOS extender. It remained quite compatible with Microsoft Windows up to the 9x series
Betrayal_at_Krondor
Marquesa of Laserna
Teresa María de Borbón-Dos Sicilias y Borbón-Parma, Marquesa of Laserna (born 6 February 1937) is a princess of the House of Bourbon-Two Sicilies and
Teresa_de_Borbón-Dos_Sicilias
Type of simple executable file
DOS. Even when complemented by the more general EXE file format for executables, the compact COM files remained viable and frequently used under DOS.
COM_file
User-definable variable associated with each running process in many operating systems
"3.33" (DR DOS 3.33), "3.34" (DR DOS 3.34), "3.35" (DR DOS 3.35), "3.40" (DR DOS 3.40), "3.41" (DR DOS 3.41, EZ-DOS 3.41), "3.41T" (DR DOS 3.41T), "4
Environment_variable
Patterns used in computer programming
Python's glob. The original DOS was a clone of CP/M designed to work on Intel's 8088 and 8086 processors. Windows shells, following DOS, do not traditionally
Glob_(programming)
Computer graphics card
the PharLap 32-bit DOS extender. Due to the nature of the pipeline, all execution calls to IRIS GL are displayed in full screen. MS-DOS has no GUI, so this
IrisVision
Data structure in the volume boot record
bytes): Format of DOS 4.0 and OS/2 1.2 Extended BPB for FAT12, FAT16, FAT16B and HPFS (51 bytes): Format of short DOS 7.1 Extended BIOS Parameter Block
BIOS_parameter_block
C header file
and processes. Most C compilers that target DOS, Windows 3.1x, Win32, OS/2, Novell NetWare or DOS extenders supply this header and the library functions
Process.h
File system used by MS-DOS and Windows 9x
developed for personal computers and was the default file system for the DOS and Windows 9x operating systems. Originally developed in 1977 for use on
File_Allocation_Table
This is an index of DOS games. This list has been split into multiple pages. Please use the Table of Contents to browse it. 0–9 A B C D E F G H I J K
Index_of_DOS_games_(F)
Software extending the spreadsheet paradigm
based on 1980s MS-DOS technology, it suffered less memory-based limitations than Javelin, though Javelin performed well with DOS extended and expanded memory
Javelin_Software
American rock band
Breakdown was released in 2009. It was followed by a trilogy of albums, ¡Uno!, ¡Dos!, and ¡Tré!, released in September, November, and December 2012, respectively
Green_Day
Mexican footballer (born 1990)
Jonathan dos Santos Ramírez (Spanish pronunciation: [ˈɟʝonatan dos ˈsantos]; Brazilian Portuguese: [ˈʒonatɐ̃ dus ˈsɐ̃tus]; born 26 April 1990) is a Mexican
Jonathan_dos_Santos
DOS device driver
HIMEM.SYS is a DOS device driver which allows DOS programs to store data in extended memory according to the Extended Memory Specification (XMS). The memory
HIMEM.SYS
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
Function that loads and executes a new child process
in DOS, inherited by Microsoft Windows. There is also a different family of spawn functions in an optional extension of the POSIX standards. The DOS/Windows
Spawn_(computing)
System of bank switching in DOS memory management
In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional
Expanded_memory
1987 Microsoft operating system version
of these versions worked with DOS memory managers like CEMM or QEMM or with DOS extenders, which have their own extended memory management and run in protected
Windows_2.0
built-in integrated memory controller. Keyboard buffer AT keyboard KVM extender Embedded controller: The Intel 8042 and other keyboard controllers used
Keyboard controller (computing)
Keyboard_controller_(computing)
File format in early Windows and OS/2
file format, a successor to the DOS MZ executable format. It was used in Windows 1.0–3.x, Windows 9x, multitasking MS-DOS 4.0, OS/2 1.x, and the OS/2 subset
New_Executable
Nickname for 8-bit ASCII-derived character sets
sets of characters) could be made available in the upper 128 characters. DOS computers built for the North American market, for example, used code page
Extended_ASCII
Maximum amount of RAM accessible by a computer
CPU, access to 16 MB memory areas was available to DOS programs that used DOS extenders, such as DOS/4GW, MiniGW/16, MiniGW, and others. Initially a de
RAM_limit
Memory manager produced by Quarterdeck Office Systems
Expanded Memory Specification (EMS), Extended Memory Specification (XMS), Virtual Control Program Interface (VCPI) and DOS Protected Mode Interface (DPMI)
QEMM
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER
DOS EXTENDER