DOS 2.x adds support for subdirectories and larger (as in 10 MB) disks. Important: Some of these OEM versions will only run, or run properly on the specific computers they were designed for. Similarly, those computers will normally only run their special OEM version.

MS-DOS (/ ˌɛmˌɛsˈdɒs / em-es-DOSS; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86 -based personal computers mostly developed by Microsoft.

This repo contains the original source-code and compiled binaries for MS-DOS v1.25 and MS-DOS v2.0, plus the source-code for MS-DOS v4.00 jointly developed by IBM and Microsoft.

Microsoft MS-DOS 2.00. There was no MS-DOS 2.00 product per se. Instead, there were OEM releases of MS-DOS based on version 2.00, including: COMPAQ MS-DOS 2.11; COMPAQ MS-DOS 2.12; MS-DOS 2.00 Source Code

IBM and Microsoft announce a long-term joint development agreement to share specified DOS code and create a new multitasking operating system from scratch, known by various code names: CP-DOS, 286DOS, DOS 5, New DOS, or Advanced DOS (OS/2 would eventually be released in late 1987). The pact was signed in June.

This article details versions of MS-DOS, IBM PC DOS, and at least partially compatible disk operating systems. It does not include the many other operating systems called "DOS" which are unrelated to IBM PC compatibles .

Dec 31, 2014 · This is the MS-DOS 2.0 OEM Adaptation Kit, and one of the sources for the bungled 2013 MS-DOS source release. The latest file dates were prepared on February 8, 1983, although it was possibly edited after that on a PC with the clock set to …

DOS 2.0 was the first version which had been developed entirely at Microsoft, with design objectives very different from those of 86-DOS. Since 1979, Microsoft had been licensing UNIX from AT&T and marketing it under the XENIX trademark.

Sep 28, 2018 · The MS-DOS 1.25 code dates from around May 9th 1983, and is comprised of just 7 source files, including the original MS-DOS Command-Line shell – COMMAND.ASM! MS-DOS 2.0 dates from around August 3rd 1983, and grew considerably in sophistication (and team size), and is comprised of 100 .ASM files

Feb 4, 2024 · This is an MS-DOS 2.0 Programmers Reference Manual published by Seattle Computer Products. In addition to programming information for MS-DOS 2.00, it includes documentation on the following utilities: Microsoft Macro Assembler Utility. Microsoft Linker Utility. Microsoft Library Manager. Scanned in color at 300dpi from an original manual set.