DOS/4G

DOS/4G
DOS/4G
DOS4GLogo.png
Developer(s) Tenberry Software
Stable release 2.01 / April 3, 1996; 15 years ago (1996-04-03)[1]
Operating system DOS
Platform x86
Type DOS extender
License Proprietary
Website http://www.tenberry.com/dos4g/

DOS/4G is a 32-bit DOS extender developed by Rational Systems (now Tenberry Software). It allows DOS programs to eliminate the 640 KB conventional memory limit by addressing up to 64[2] MB of extended memory on Intel 80386 and above machines.

Functioning as a highly flexible and reusable memory extension library, DOS/4G allowed programmers to access extended memory without programming specialized code. It embeds itself in the executable file at linking time and executes before main application code, so usually DOS/4G initialization messages show up at launch. It can operate within MS-DOS, PC-DOS, DR-DOS and other DOS clones, the DOS boxes of OS/2, Microsoft Windows, Windows NT and Windows 95, and DOS emulators such as DOSBox.

DOS/4GW was a free limited edition of DOS/4G and was included with the Watcom C compiler with a commercial re-distribution license. It was made widely popular by computer games like Doom.

Initial versions of DOS/4G had trouble with secondary DMA channels on the ISA bus, which prevented 16-bit devices like Gravis Ultrasound series from normally functioning; Gravis even had to develop a 'patch' utility which updated the game executable to work around this incompatibility.

In case of problems, DOS/4G or DOS/4GW can be replaced with the newer and free DOS/32; a patch utility can even replace DOS/4G code embedded inside a compiled executable file.[3]

See also

References

  1. ^ "DOS/4G Release Notes". http://www.tenberry.com/dos4g/rn4g.html. 
  2. ^ DOS4G FAQ
  3. ^ http://www.dosbox.com/wiki/TOOLS:DOS32A

External links


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • döşənmə — «Döşənmək»dən f. is …   Azərbaycan dilinin izahlı lüğəti

  • döşətmə — «Döşətmək»dən f. is …   Azərbaycan dilinin izahlı lüğəti

  • dos — [ do ] n. m. • 1080; lat. pop. dossum, class. dorsum, appliqué surtout aux animaux, et qui a éliminé tergum I ♦ 1 ♦ Partie du corps de l homme qui s étend des épaules jusqu aux reins, de chaque côté de la colonne vertébrale. Être large de dos. ⇒… …   Encyclopédie Universelle

  • dos-nu — dos [ do ] n. m. • 1080; lat. pop. dossum, class. dorsum, appliqué surtout aux animaux, et qui a éliminé tergum I ♦ 1 ♦ Partie du corps de l homme qui s étend des épaules jusqu aux reins, de chaque côté de la colonne vertébrale. Être large de dos …   Encyclopédie Universelle

  • dos — DOS. s. m. La partie de derrière de l animal, depuis le cou jusqu aux reins. Le dos d un homme, d un cheval, d un mulet, d un âne. Il étoit couché sur le dos. Dos courbé, voûté. L épine du dos. Il portoit un homme sur son dos. Il lui a mis le… …   Dictionnaire de l'Académie Française 1798

  • dos — (Del lat. duos, acus. de duo). 1. adj. Uno y uno. 2. segundo (ǁ ordinal). Número dos. Año dos. Apl. a los días del mes, u. t. c. s. [m6]El dos de mayo. 3. m. Signo o conjunto de signos con que se representa el número dos. 4. Carta o …   Diccionario de la lengua española

  • dos — DOS. s. m. La partie de derriere de l animal, entre les espaules & les reins. Le dos d un homme, d un cheval, d un mulet, d un asne. il estoit couché sur le dos. dos courbé, vouté. l espine du dos. il portoit un homme sur son dos. il luy a mis le …   Dictionnaire de l'Académie française

  • DOS XL — Screenshot of DOS XL Original author(s) Paul Laughton, Mark Rose, Bill Wilkinson and Mike Peters Developer(s) Optimized Systems Software …   Wikipedia

  • DOS/32 — Developer(s) Narech K. Stable release 9.1.2 / April 20, 2006; 5 years ago (2006 04 20)[1] Operating system …   Wikipedia

  • DOS-2 — Configuration de DOS 2, identique à celle de Saliout 1, avec un vaisseau Soyouz Caractéristiques Équipage …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”