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MS-DOS and Win16
The compiler is highly portable, and is known to be run on AmigaOS, BeOS, HP-UX 9, Linux, BSD, Mac OS X, Solaris, Win32, Win16 and MS-DOS.
The user-mode parts of Windows 9x consist of three subsystems: the Win16 subsystem, the Win32 subsystem and MS-DOS.
It also supports Virtual DOS Machines ( VDMs ), which allow MS-DOS and 16-bit Windows ( Win16 ) applications to run on Windows NT.

MS-DOS and only
It was the only text editor provided with MS-DOS before version 5. 0 of that system, when it was superseded by the full screen MS-DOS Editor.
The first game, Simon the Sorcerer, was released in 1993 for IBM PC compatibles running MS-DOS on three 3. 5 " floppy disks in a large box styled with purple margins, with no speech and only sub-titles used throughout the game.
The MS-DOS was a version specialized for and only bootable on the Tandy 1000, as it would announce on the screen of any other PC-compatible one tried to boot with it ; it included a version of BASICA ( Microsoft's Advanced GW-BASIC ) with support for the enhanced CGA graphics modes ( a. k. a. Tandy Graphics or TGA ) and three-voice sound hardware of the Tandy 1000.
Thus, MS-DOS was for several years sold only as an OEM product.
MS-DOS did not have an API for graphics, and the BIOS only included the most rudimentary of graphics functions ( such as changing screen modes and plotting single points ).
Normally in the MS-DOS operating system, only one program can be running at any given time, and when it wants to stop running, it relinquishes the control to DOS's shell program, < tt > COMMAND. COM </ tt >, using the system call < tt > INT 21H / 4CH </ tt >.
This is a legacy of MS-DOS, which only allowed a 128-byte command line to be passed to an application, making wildcarding by the DOS command prompt impractical.
Aside from IBM's PC DOS, MS-DOS was the only other version available as OEM editions vanished since by this time PCs were 100 % compatible so customizations for hardware differences were no longer necessary.
DWScript is a version of SCRIPT for MS-DOS, called after its author, D. D. Williams, but was never released to the public and only used internally by IBM.
The most enduring element of 86-DOS was its primitive line editor, EDLIN, which remained the only editor supplied with Microsoft versions of DOS until the June 1991 release of MS-DOS 5. 0, which included a TUI-based editor, MS-DOS Editor based on QBasic.
The program filled a required niche in the market, as DOS shipped with only a command-line file manager, until the generally unsuccessful DOS shell that was provided with MS-DOS 4. 0.
To catch on, Microsoft included its own EMM386 in MS-DOS 5. 0, while previously the memory management functionality was only available with Windows.
The Macintosh version has high resolution graphics ( 640x480 ), the MS-DOS and SNES version only low resolution graphics ( 320x200 ) and ( 256x224 ) respectively.
In this case, the only difference might be that the text in GUI text editors will often be black on a white background ( rather than white on a black background as seen when viewing in MS-DOS or Unix console ), thus making some of the art appear to be " inverse ", like a film negative.
It supports only printers that can connect via a parallel printer port, such as most HP Deskjets and which can run under MS-DOS ; it does not support printers that require a USB connection or are labelled " Windows only ".
Microsoft released comparable but simpler memory managers of its own-HIMEM. SYS for XMS and EMM386. EXE for EMS with MS-DOS 4. 01 in 1989 ; earlier Windows / 386 2. 1 included a built-in EMM which offered EMS to DOS windows during Windows sessions only.
Up to version 5. 0, MASM was available as an MS-DOS application only.
The PC version of Mallard Basic is still available from LocoScript Software as an MS-DOS program which will run under Windows as a Disc only version with licence or with the full Introduction & Reference manual.
In MS-DOS the " deleted " files are not really deleted, but only marked as deleted — so they could be undeleted during some time, until the disk blocks they used are eventually taken up by other files.
Microsoft and IBM DOS variants including MS-DOS, PC DOS, Windows 95, Windows 98, Windows 98 SE, and Windows Me ) do not have permissions, only file attributes.
One of Turbo Pascal's strong features was the ability to easily " chain " sub-programs and external modules into memory only as required ; as the average available RAM for a program to load and run in MS-DOS was 384 kilobytes, this became a very important feature.

MS-DOS and on
With special software it's possible to read C1581 disks on a x86 PC system, and likewise, read MS-DOS disks in the C1581 ( Big blue reader ) provided the PC floppy handles the " 720 kB " size format.
CD-R recording systems available in 1990 were similar to the washing machine-sized Meridian CD Publisher, based on the two-piece rack mount Yamaha PDS audio recorder costing $ 35, 000, not including the required external ECC circuitry for data encoding, SCSI hard drive subsystem, and MS-DOS control computer.
For instance, on newer MS Windows computers, the older FAT-type file systems of MS-DOS and old versions of Windows are supported, in addition to the NTFS file system that is the normal file system for recent versions of Windows.
Initially developed ( though not publicly released ) on the Atari ST, the first commercial release was for the 16-bit Microsoft MS-DOS platform and was proprietary.
However, Edlin is included in 32-bit versions of Windows NT, since NTVDM's DOS support is based on MS-DOS version 5. 0.
The clone is available for download as part of the FreeDOS project, and runs on operating systems such as Linux or Unix as well as MS-DOS.
It was bundled with MS-DOS operating systems on IBM PC compatibles by Microsoft.
" Windows Me was the last operating system to be based on the Windows 9x ( monolithic ) kernel and MS-DOS.
Rising costs and falling profits, exacerbated by the lack of new products in 1988 and technical issues with its MS-DOS products, caused Activision finally to pull the plug on Infocom in 1989.
Other MultiMate products included foreign language versions of the software ( i. e., " MultiTexto " in Spanish ), a hardware interface card for file-transfer with Wang systems and versions of MultiMate for different PC clone MS-DOS computers, and for use on Novell, 3COM and IBM's PC Token Ring networks.
Multiplan was released first for computers running CP / M ; it was developed using a Microsoft proprietary p-code C compiler as part of a portability strategy that facilitated ports to systems such as MS-DOS, Xenix, Commodore 64, Texas Instruments TI-99 / 4A, Radio Shack TRS-80 Model II, TRS-80 Model 100 ( on ROM ), Apple II, and Burroughs B-20 series.
Notably, basic system calls were modeled after MS-DOS calls ; their names even started with " Dos " and it was possible to create " Family Mode " applications: text mode applications that could work on both systems.
Simon the Sorcerer is an adventure game that was released by Adventure Soft on 2 January 1993 for Amiga and MS-DOS formats.
GDW licensee Paragon produced two video games based on the Traveller universe: MegaTraveller 1: The Zhodani Conspiracy ( 1990 ) for Amiga, Atari ST and MS-DOS operating environments, and MegaTraveller 2: Quest for the Ancients ( 1991 ) for Amiga and MS-DOS.
Many other word processing applications exist, including WordPerfect ( which dominated the market from the mid-1980s to early-1990s on computers running Microsoft's MS-DOS operating system ) and open source applications OpenOffice. org Writer, LibreOffice Writer, AbiWord, KWord, and LyX.
WordStar version 3. x used the MS-DOS File control block ( FCB ) interface, an early data structure for file input / output which was based closely on CP / M's file input / output functions.
Early versions of Zenith Z-DOS ( a re-branded variant of MS-DOS 1. 25 ) had the command " xyzzy " which took a parameter of " on " or " off ".
The compiler was first released as Compas Pascal for CP / M, and then released on November 20, 1983 as Turbo Pascal for CP / M ( including Apple II computers fitted with Z-80 SoftCards and the DEC Rainbow ), CP / M-86, and MS-DOS machines.
They ran MS-DOS on an 8 MHz processor, and the built-in screen could emulate the Monochrome Display Adapter or Color Graphics Adapter.
The 1000 SX came with MS-DOS 3. 2 and Deskmate 2 on 5. 25 " diskettes.

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