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Virtual DOS machines can operate either exclusively through typical software emulation methods (e.g. dynamic recompilation) or can rely on the virtual 8086 mode of the Intel 80386 processor, which allows real mode 8086 software to run in a controlled environment by catching all operations which involve accessing protected hardware and forwarding them to the normal operating system (as exceptions).
Multiuser DOS is a real-time multi-user multi-tasking operating system for IBM PC-compatible microcomputers.. An evolution of the older Concurrent CP/M-86, Concurrent DOS and Concurrent DOS 386 operating systems, it was originally developed by Digital Research and acquired and further developed by Novell in 1991.
286|DOS-Extender is compatible with XMS, VCPI and DPMI in Windows 3.0. [300] [433] 1991: June: On June 11, IBM DOS 5.0 is released. It featured the moving of the DOS kernel and command.com into the high memory area. [434]
Many 16-bit Windows legacy programs can run without changes on newer 32-bit editions of Windows. The reason designers made this possible was to allow software developers time to remedy their software during the industry transition from Windows 3.1 to Windows 95 and later, without restricting the ability for the operating system to be upgraded to a current version before all programs used by a ...
dbDOS VM Virtual Machine (dbDOS VM); The dbDOS VM or VM stands for Virtual Machine and with dbDOS it is a DOS emulation that allows products developed for DOS-based applications to run inside the virtual machine. The VM supports the Windows Operating Systems (XP, 2003, Vista, 2008, 7, 8, 8.1) in either 32- or 64-bit editions.
MS-DOS 7.10 (Windows 95 OSRs 2 and 2.5, 98, 98 SE) 1996 ... General Software: General Software DIP DOS 2.11: 1989 DIP Research, Atari Corporation: Support ended
In 1992, Univel UnixWare 1.0 Personal Edition came with DOS Merge 3.0 and Novell's DR DOS 6.0. Locus eventually joined the Microsoft WISE [9] program which gave them access to Microsoft Windows source code, which allowed later versions of Merge to run Windows shrink wrapped applications without a copy of Windows. [10]
DR-DOS 7.07 (with BDOS 7.4/7.7) by Paul introduced new bootstrap loaders and updated disk tools in order to combine support for CHS and LBA disk access, the FAT12, FAT16 and FAT32 file systems, and the differing bootstrapping conventions of DR-DOS, PC DOS, MS-DOS, Windows, REAL/32 and LOADER into a single NEWLDR MBR and boot sector, so that the ...