86-DOS

86-DOS
	A sample 86-DOS session (simulated)
Developer	Seattle Computer Products / Tim Paterson
Written in	8086 assembly language
OS family	DOS
Working state	Historic, unsupported
Initial release	1980
Latest release	86-DOS 1.10 / July 1981
Marketing target	S-100-based micro-computers with 8086 processor
Available in	English
Package manager	N/A
Platforms	x86
Kernel type	Monolithic kernel
Influenced by	CP/M
Default; user interface	Command-line interface (COMMAND.COM)
License	Proprietary
Succeeded by	MS-DOS, IBM PC DOS

86-DOS (known internally as QDOS,^[1] for Quick and Dirty Operating System) is a discontinued operating system developed and marketed by Seattle Computer Products (SCP) for its Intel 8086-based computer kit.

86-DOS shared a few of its commands with other operating systems like OS/8 and CP/M, which made it easy to port programs from the latter. Its application programming interface was very similar to that of CP/M. The system was licensed and then purchased by Microsoft and developed further as MS-DOS and PC DOS.^[2]

^ Paterson, Tim (2018-08-05). "The Original DOS and the Old Days". YouTube. Mountain View, CA, United States: Vintage Computer Federation. Retrieved 2022-03-01.
^ Cite error: The named reference Beley_1986_MS-DOS_Encyclopedia was invoked but never defined (see the help page).

[Paterson_2019_Presentation-1] Paterson, Tim (2018-08-05). "The Original DOS and the Old Days". YouTube. Mountain View, CA, United States: Vintage Computer Federation. Retrieved 2022-03-01.

[Beley_1986_MS-DOS_Encyclopedia-2] Cite error: The named reference Beley_1986_MS-DOS_Encyclopedia was invoked but never defined (see the help page).

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