86-DOS
| |
| 86-DOS | |
| Developer | Seattle Computer Products |
|---|---|
| Publisher | Seattle Computer Products |
| Platforms | x86 |
| Released | QDOS 0.10: July 1980 QDOS 0.11: August 1980 86-DOS 0.2: August 1980 86-DOS 0.3: November 15, 1980 86-DOS 0.33: December 1980 86-DOS 0.34: December 29, 1980 86-DOS 0.42: February 25, 1981 86-DOS 0.56: March 23, 1981 86-DOS 0.60: March 27, 1981 86-DOS 0.74: April 15, 1981 86-DOS 0.75: April 17, 1981 86-DOS 0.76: April 23, 1981 86-DOS 0.80: April 27, 1981 86-DOS 1.00: April 28, 1981 86-DOS 1.01: May 12, 1981 86-DOS 1.10: July 21, 1981 86-DOS 1.14: October or November 1981 |
| Added to Museum |
Not yet |
86-DOS, originally QDOS (Quick and Dirty Operating System) was the first DOS operating system. Developed by Seattle Computer Products, it was the basis of MS-DOS 1.0 and PC DOS 1.0.
History
Tim Paterson developed an operating system for Seattle Computer Products based heavily on CP/M. The company released two versions of QDOS in July and August 1980. The latter was followed up by a version named 86-DOS, which was also released in August 1980.
It was then licensed by Microsoft. Seattle Computer Products developed twelve versions of Q-DOS that were licensed by Microsoft and sublicensed to IBM through Microsoft from November 15, 1980, to May 12, 1981.
Microsoft then purchased Q-DOS. Version 1.10 was released on July 21, 1981. Microsoft licensed 86-DOS 1.01 to IBM, which released it as PC DOS 1.0 on August 12, 1981.
Seattle Computer Products released one last version, 1.14, in the fourth quarter of 1981.
Revisions after this period were under the PC DOS and MS-DOS brand names.
Versions of QDOS and 86-DOS
| Title | Released | Date Added to the Museum | Notes |
|---|---|---|---|
| QDOS 0.10 | July 1980 | Not yet. | |
| QDOS 0.11 | August 1980 | Not yet. | |
| QDOS/86-DOS 0.2 | August 1980 | Not yet. | |
| 86-DOS 0.3 | November 15, 1980 | Not yet. | First version licensed to Microsoft. |
| 86-DOS 0.33 | December 1980 | Not yet. | |
| 86-DOS 0.34 | December 29, 1980 | Not yet. | |
| 86-DOS 0.42 | February 25, 1981 | Not yet. | |
| 86-DOS 0.56 | March 23, 1981 | Not yet. | |
| 86-DOS 0.60 | March 27, 1981 | Not yet. | |
| 86-DOS 0.74 | April 15, 1981 | Not yet. | |
| 86-DOS 0.75 | April 17, 1981 | Not yet. | |
| 86-DOS 0.76 | April 23, 1981 | Not yet. | |
| 86-DOS 0.80 | April 27, 1981 | Not yet. | |
| 86-DOS 1.00 | April 28, 1981 | Not yet. | |
| 86-DOS 1.01 | May 12, 1981 | Not yet. | |
| 86-DOS 1.10 | July 21, 1981 | Not yet. | Purchased by Microsoft and renamed MS-DOS |
| 86-DOS 1.14 | October or November 1981 | Not yet. |
