View source for 86-DOS

{{Infobox_Software |
  software_name   = 86-DOS|
  software_image  = [[File:86-DOS.png|300px]]|
  developer       = [[Seattle Computer Products]]|
  publisher       = [[Seattle Computer Products]]|
  systems         = [[x86]]|
  release         = QDOS 0.10: July 1980<br />QDOS 0.11: August 1980<br />86-DOS 0.2: August 1980<br />86-DOS 0.3: November 15, 1980<br />86-DOS 0.33: December 1980<br />86-DOS 0.34: December 29, 1980<br />86-DOS 0.42: February 25, 1981<br />86-DOS 0.56: March 23, 1981<br />86-DOS 0.60: March 27, 1981<br />86-DOS 0.74: April 15, 1981<br />86-DOS 0.75: April 17, 1981<br />86-DOS 0.76: April 23, 1981<br />86-DOS 0.80: April 27, 1981<br />86-DOS 1.00: April 28, 1981<br />86-DOS 1.01: May 12, 1981<br />86-DOS 1.10: July 21, 1981<br />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 [[PC DOS 1.0|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==
{| class="wikitable sortable" style="width:100%"
!| Title
!| Released
!| Date Added to the Museum
!| Notes
|-
| style="border-style: solid; border-width: 1px; text-align:center" | QDOS 0.10
| style="border-style: solid; border-width: 1px; text-align:center" | July 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | QDOS 0.11
| style="border-style: solid; border-width: 1px; text-align:center" | August 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | QDOS/86-DOS 0.2
| style="border-style: solid; border-width: 1px; text-align:center" | August 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.3
| style="border-style: solid; border-width: 1px; text-align:center" | November 15, 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | First version licensed to Microsoft.
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.33
| style="border-style: solid; border-width: 1px; text-align:center" | December 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.34
| style="border-style: solid; border-width: 1px; text-align:center" | December 29, 1980
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.42
| style="border-style: solid; border-width: 1px; text-align:center" | February 25, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.56
| style="border-style: solid; border-width: 1px; text-align:center" | March 23, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.60
| style="border-style: solid; border-width: 1px; text-align:center" | March 27, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.74
| style="border-style: solid; border-width: 1px; text-align:center" | April 15, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.75
| style="border-style: solid; border-width: 1px; text-align:center" | April 17, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.76
| style="border-style: solid; border-width: 1px; text-align:center" | April 23, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 0.80
| style="border-style: solid; border-width: 1px; text-align:center" | April 27, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 1.00
| style="border-style: solid; border-width: 1px; text-align:center" | April 28, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 1.01
| style="border-style: solid; border-width: 1px; text-align:center" | May 12, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 1.10
| style="border-style: solid; border-width: 1px; text-align:center" | July 21, 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | Purchased by Microsoft and renamed [[MS-DOS]]
|-
| style="border-style: solid; border-width: 1px; text-align:center" | 86-DOS 1.14
| style="border-style: solid; border-width: 1px; text-align:center" | October or November 1981
| style="border-style: solid; border-width: 1px; text-align:center" | Not yet.
| style="border-style: solid; border-width: 1px; text-align:center" | 
|}

[[Category: Brand names]]
[[Category: Brand names owned by Microsoft]]
[[Category: DOS]]