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ANSI.SYS appeared in MS-DOS 2.0, the first version of the operating system supporting device drivers. [11] It was supported by all following versions of MS-DOS. It is also present in many non-Microsoft DOS systems, e.g. IBM PC DOS and DR-DOS. [12] ANSI.SYS was required to run some software that used its cursor and color control functions. [12]
Microsoft is expected to release MS-DOS 3.2 to compatible manufacturers, with the same features as PC DOS 3.2. [259] A new device driver RAMDRIVE.SYS creates a virtual disk in either conventional memory, extended memory or Lotus-Intel-Microsoft expanded memory.
Novell DOS 7, Caldera OpenDOS 7.01 and DR-DOS 7.02 and higher provide a functional equivalent to MSCDEX named NWCDEX, which 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 and higher processors, thereby leaving only a 7 KB stub in conventional or upper memory (in comparison to MSCDEX, which ...
IFSHLP.SYS (the Installable File System Helper) is an MS-DOS device driver that was first released as part of Microsoft Windows for Workgroups 3.11. It enables native 32-bit file access in Windows 386 Enhanced Mode by bypassing the 16-bit DOS API and ensuring that no other real mode driver intercepts INT 21h calls.
The second program was NTFSDOS Tools - an add-on package for NTFSDOS that contains two commercial utilities for DOS - NTFSCopy and NTFSRen. The former (NTFSCOPY.EXE) could be used to overwrite corrupt files with fresh versions. The latter (NTFSREN.EXE) could be used to change the names of bad drivers so Windows could not load them.
PC DOS 2.1, successor of PC DOS 2.0 in 1983; PC DOS 2.11, successor of PC DOS 2.1 in 1984; It may also refer to operating systems of the Digital Research family: DOS Plus 1.0, a single-user variant of Concurrent PC DOS in 1985; DOS Plus 1.1, a single-user variant of Concurrent PC DOS in 1985; DOS Plus 1.2, a single-user variant of Concurrent PC ...
A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. [1] This technique partially overcame DOS's limitation of executing only one program, or task, at a time.