Three emulators of the machine exist, ElectrEm for Windows / Linux / Mac OS X, Elkulator for Windows / DOS and the Multi-system emulator MESS.

RBBS-PC, ported over from the CP / M world, and Fido BBS, created by Tom Jennings ( who later founded FidoNet ) were the first notable DOS BBS programs.

( Around 1990, OS / 2 came out with " preemptive multitasking " of DOS, an alternative to DESQview for multi-node BBS.

Later versions of CP / M ( as well as Concurrent CP / M, Concurrent DOS, DOS Plus, Multiuser DOS, System Manager and REAL / 32 ) come with an XIOS ( Extended Input / Output System ) instead of the BIOS.

Most versions of DOS have a file called " IO. SYS ", " IBMBIO. COM ", " IBMBIO. SYS ", or " DRBIOS. SYS "; this file is known as the " DOS BIOS ", which is analogous to the " CP / M BIOS ".

Because this internal 1571 does not have an unused 8-bit input / output port on any chip, unlike most other Commodore drives, it is not possible to install a parallel cable in this drive, such as that used by SpeedDOS, Dolphin DOS and some other fast third-party Commodore DOS replacements.

Examples include DOS / 360 and FreeDOS.

Mature versions of the Commodore, SWTPC, Atari and Apple home computer systems all featured a disk operating system ( actually called ' DOS ' in the case of the Commodore 64 ( CBM DOS ), Atari 800 ( Atari DOS ), and Apple II machines ( Apple DOS )), as did ( at the other end of the hardware spectrum, and much earlier ) IBM's System / 360, 370 and ( later ) 390 series of mainframes ( e. g., DOS / 360: Disk Operating System / 360 and DOS / VSE: Disk Operating System / Virtual Storage Extended ).

A double-sided disk on the 1571 would have a capacity of 340 KB ( 70 tracks, 1, 360 disk blocks of 256 bytes each ); as 8 KB are reserved for system use ( directory and block availability information ) and, under CBM DOS, 2 bytes of each block serve as pointers to the next logical block, 254 x 1, 328 = 337, 312 B or about 329. 4 KB were available for user data.

Operating systems for the System / 360 family included OS / 360 ( with PCP, MFT, and MVT ), BOS / 360, TOS / 360, and DOS / 360.

After an initial honeymoon period in the wake of October 5, DSS and the rest of DOS, led by Đinđić and his DS, found themselves increasingly at odds over the nature and pace of the governments ' reform programs.

The initial version of DOS was largely based on CP / M and many of its function calls as well as the file system were copied directly from the older OS.

The command has existed as a DOS command since the initial release of MS-DOS.

After an initial honeymoon period in the wake of 5 October, DSS and the rest of DOS, led by Đinđić and his DS, found themselves increasingly at odds over the nature and pace of the governments ' reform programs.

Originally developed on NeXT computers, it was ported to DOS for Doom < nowiki >'</ nowiki > s initial release and was later ported to several game consoles and operating systems.

Like all System / 360 operating software initial releases of DOS could run only one program at a time.

There were many glitches in the initial shipments of the DOS port, such as characters landing and recovering normally after landing from a jump if they're knocked out in mid-air with a basic attack.

The initial internal-development versions of Workplace OS ran on x86-based hardware and provided a robust BSD Unix derived personality and a DOS personality.

The initial 1982 release supported DOS 1. x and featured the UNERASE utility.

" In an appendix he called DOS " plain and simple theft " because its first 26 system calls worked the same as CP / M's.

Examples could include DOS to Win95 or Unix to GNU, using a simple metric like source lines of code to mark the difference.

For example, PE / COFF headers still include an MS-DOS executable program, which is by default a stub that displays the simple message " This program cannot be run in DOS mode " ( or similar ).

DosWin32 and HX DOS-Extender are other projects which emulate the Windows API allowing the execution of simple Windows programs from a DOS command line.

In its basic form, a CLIST program ( or " CLIST " for short ) can take the form of a simple list of commands to be executed in strict sequence ( like a DOS batch file (*. bat ) file ).

It has a small indicator light, and was usually used with very simple DOS programs that did not eject the last page after sending data to the printer, though it could also be useful to print the data in the printer's memory if a program failed in the middle of sending a page to be printed.

But by 1999 personal computers had embraced the Windows 95 era and many of the original manual control buttons like Form Feed were no longer necessary, because the Windows 95 print-spooler subsystem offered even simple Windows applications a much greater control over the printer than was available to DOS applications, which had to each independently rebuild and re-engineer basic printer management systems from scratch.

The DOS remake made many changes to the original game, and is more appropriately viewed as a reconceptualization of the gameplay than as a simple cosmetic makeover.

simple: Category: DOS games

IBM saw the easy portability of the Mach-based Workplace OS as creating a simple migration path to move their existing x86 ( DOS and OS / 2 ) customer base onto PowerPC-based systems.

Apple Mechanic allowed users to create their own shape tables ( an early form of sprites ) to create their own games, DOS Boss let users patch the disk operating system, and Beagle Bag had a number of simple but fun games written in BASIC that budding programmers could also list out and learn from.

The original 98lite was a simple DOS based installer that ran before the Windows 98 installation, this installer made modifications to a fresh installation of Windows preventing the installation of Internet Explorer and the Active Desktop.

XCade was refined on and off over the years from a simple open source Unix and DOS based emulator to being a shareware product for Palm OS handhelds and phones, and freeware for the Korean GP32 handheld console.

The Apple II disk operating system, known simply as DOS, thus intercepted all input typed at the BASIC command prompt to determine whether it was a DOS command.

A few years later, in 1981, IBM introduced the first DOS based IBM PC, and due to the overwhelming popularity of PCs and their clones, DOS soon became the operating system on which the majority of BBS programs were run.

MS-DOS continued to be the most popular operating system for BBS use up until the mid-1990s, and in the early years most multi-node BBSes were running under a DOS based multitasker such as DESQview or consisted of multiple computers connected via a LAN.

With open software specifications and the possibility of software licensing, new opportunities arose for software tools that then became the de facto standard, such as DOS for operating systems, but also various proprietary word processing and spreadsheet programs.

The drive's built-in disk operating system was CBM DOS 2. 6.

Disk Operating System ( specifically ) and disk operating system ( generically ), most often abbreviated as DOS, refer to an operating system software used in most computers that provides the abstraction and management of secondary storage devices and the information on them ( e. g., file systems for organizing files of all sorts ).

In some cases, the disk operating system component ( or even the operating system ) was known as DOS.

On the PC compatible platform, an entire family of operating systems was called DOS.

* The DOS operating system was the primary operating system for the Apple Computer's Apple II family of computers, from 1979 with the introduction of the floppy disk drive, until 1983 with the introduction of ProDOS ; many people continued using it long after that date.

* The DOS operating system for DEC PDP-11 minicomputers.

: The best known family of operating systems named " DOS " is that running on IBM PCs type hardware using Intel x86 CPUs or their compatible cousins from other makers.

Doom became a " killer app " that all capable consoles and operating systems were expected to have, and versions of Doom have subsequently been released for the following systems: DOS, Microsoft Windows, Linux, Apple Macintosh, Super NES, Sega 32X, Sony PlayStation, Game Boy Advance, iOS, Symbian OS, RISC OS, Atari Jaguar, Sega Saturn, Nintendo 64, Tapwave Zodiac, 3DO, Xbox, and Xbox Live Arcade.