Early DOS Manuals
Documentation for 86-DOS and Seattle Computer Products
These manuals are in Portable Document Format (PDF). Some may be quite large; you may want to save to your computer by right-clicking and selecting "Save Target As..."
- First Advertisement for the 8086 Computer - Nov 1979. Text PDF, 100 KB.
- 8086 Monitor Instruction Manual - Version 1.4A, Feb 1980. Image-only PDF, 1.3 MB. This manual includes an assembly listing for the 8086 Monitor, which later became the basis for the program Debug that was included with all versions of DOS.
- 8086 CPU Instruction Manual - Oct 1980. Image-only PDF, 1 MB.
- 86-DOS Instruction Manual - The first DOS manual, ca Oct 1980. Image-only PDF, 1.3 MB. Serial numbers stamped on each page are from being an exhibit in a 1986 lawsuit between Seattle Computer Products and Microsoft.
- 86-DOS User's Manual - Version 0.3, ca Dec 1980. Image-only PDF, 1.8 MB.
- 86-DOS Programmer's Manual - Version 0.3, ca Dec 1980. Image-only PDF, 1.4 MB.