Slashdot Mirror


Microsoft Posts Source Code For MS-DOS and Word For Windows

An anonymous reader writes "Microsoft, along with the Computer History Museum, has posted the source code for MS-DOS 1.1 and 2.0, and Word for Windows 1.1a. It's been a long time coming — DOS 2.0 was released for IBM PCs in 1983, and Word for Windows 1.1a came out in 1990. The museum, with Microsoft's consent, has made the code available for non-commercial use. They've also explained some of the history of this software's development: '[In August, 1980], IBM had already contracted with Microsoft to provide a BASIC interpreter for the PC, so they asked them to investigate also providing the operating system. Microsoft proposed licensing "86-DOS", which had been written by Tim Paterson at Seattle Computer Products (SCP) for their 8086-based computer kit because the 16-bit version of CP/M was late. When SCP signed the licensing deal [7] with Microsoft, they didn't know for sure who the computer manufacturer was. Paterson said "We all had our suspicions that it was IBM that Microsoft was dealing with, but we didn't know for sure." [1] He left SCP to work for Microsoft in 1981. "The first day on the job I walk through the door and 'Hey! It's IBM.'" Microsoft originally licensed 86-DOS in December 1980 for a flat fee of $25,000. By the next summer they recognized the importance of owning it and being able to license it to other companies making IBM-PC clones, so they purchased all rights for an additional $50,000.'"

8 of 224 comments (clear)

  1. Re:Why are they posting old source code? by Anonymous Coward · · Score: 5, Funny

    I guess DOS 6.22 is still somewhere part of their Windows 8.1 64 bits system. Releasing that code might give vulns. to current systems. :)

  2. I'm In Trouble Now by LifesABeach · · Score: 4, Funny

    I told my dad about this post pointing on my Touch Screen; now he's calling my doctor and asking about a Tetanus Shot, and he looks worried?!

  3. Re:FreeDOS by Joce640k · · Score: 4, Funny

    FreeDOS isn't done until Lotus won't run.

    Or something.

    --
    No sig today...
  4. Re:Source code for 3.3 was out there long ago.... by SJHillman · · Score: 3, Funny

    I'm trying to find DOS 3.3 on a 5.25" floppy somewhere. Have an old Tandy that has a slightly DOS install on its ancient hard disk that I'm looking to repair. Once I get it running, I plan on keeping it in my office for when people come whining about wanting a new PC.

  5. Re:True to their genesis by UnknownSoldier · · Score: 5, Funny

    /Oblg. M$ joke

    Windows 95: 32 bit extensions and a graphical shell for a 16 bit patch to an 8 bit operating system originally coded for a 4 bit microprocessor, written by a 2 bit company, that can't stand 1 bit of competition.

  6. Re:Why are they posting old source code? by Anonymous Coward · · Score: 5, Funny

    Jugalator's statement: There's got to be some DOS 6.22 code in there.
    Your response: Windows doesn't actually run on top of DOS anymore.
    My conclusion: You can't read.

  7. I found this statement by Tablizer · · Score: 5, Funny

    12700 REM see, 640k is enuf 4 me - BG

  8. Re:Source code for 3.3 was out there long ago.... by bloodhawk · · Score: 3, Funny

    my Tandy 1000ex most definitely required its DOS to be booted from the floppy drive. was damn frustrating when I was first learning computers and looking through commands, one of the first ones I tried was Format a:, spent the next 2 weeks waiting for a replacement dos disk :-(