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In computing, FASTOPEN is a DOS terminate-and-stay-resident command, introduced in MS-DOS version 3.3, [1] that provides accelerated access to frequently-used files and directories. [2] The command is also available in SISNE plus. [3]
The MS-DOS 6 Technical Reference on TechNet contains the official Microsoft MS-DOS 6 command reference documentation. DR-DOS 7.03 online manual; MDGx MS-DOS Undocumented + Hidden Secrets; MS-DOS v1.25 and v2.0 source code; There are several guides to DOS commands available that are licensed under the GNU Free Documentation License:
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.
With Windows 95, 98, and Me, the role of MS-DOS was reduced to a boot loader according to Microsoft, with MS-DOS programs running in a virtual DOS machine within 32-bit Windows, with ability to boot directly into MS-DOS retained as a backward compatibility option for applications that required real mode access to the hardware, which was ...
Simulate a hardware environment over which DOS programs are accustomed to having control. Provide DOS services through native Linux services; for example, dosemu can provide a virtual hard disk drive which is actually a Linux directory hierarchy. [3] API-level support for Packet driver, [4] IPX, Berkeley sockets (dosnet). [5] [6]
The COMMAND.COM filename was also used by Disk Control Program (DCP), an MS-DOS derivative by the former East German VEB Robotron. [2] COMMAND.COM is a DOS program. Programs launched from COMMAND.COM are DOS programs that use the DOS API to communicate with the disk operating system.
Its first release was version 3.31, named so that it would match MS-DOS's then-current version. [2] DR DOS 5.0 was released in 1990 as the first to be sold in retail; it was critically acclaimed [3] and led to DR DOS becoming the main rival to Microsoft's MS-DOS, [4] who quickly responded with its own MS-DOS 5.0 but releasing over a year later. [5]
The original DOS API in 86-DOS and MS-DOS 1.0 was designed to be functionally compatible with CP/M.Files were accessed using file control blocks (FCBs). The DOS API was greatly extended in MS-DOS 2.0 with several Unix concepts, including file access using file handles, hierarchical directories and device I/O control. [1]