Microsoft opens source code for early versions of MS-DOS and Word

In less than 40 years, Microsoft decided to open to the public MS-DOS v1.1 and v2.0 source code, as well as one of the first versions of Word for Windows 1.1a. Say thank you for this need The Computer History Museum and Microsoft Research.

References:
MS-DOS v1.1 & v2.0
Word v1.1a

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According to a press release , both software products became the cornerstone in the company's life, laying the foundation for its commercial success. The MS-DOS v1.1 source code refers to 1982, v2.0 to 1983. By the way, in version 1.1, the entire operating system fit into 12 kilobytes of memory - which, of course, is incomparable with today's "monsters."

The Word version for DOS, released in 1983, did not gain much success, losing to the market leader at that time - a processor named WordPerfect. But the release in 1989 of Word for Windows changed everything - in four years this software product managed to capture more than half of the revenues of the entire word processor market, which was an impressive success for the marketing department and the engineers of the company.

Well, a surprise was waiting for us all tonight - now everyone can touch the legend.

PS In the meantime, users at HackerNews have already made their first discoveries in the Word source code, checking the legends for years:

$ grep -ri fuck . ./Opus/asm/wordgrep.asm:; BP is used as always, the other registers are free to fuck with. ./Opus/asm/wordgrep.asm: je another_fucking_out_of_range_jump ./Opus/asm/wordgrep.asm:another_fucking_out_of_range_jump: 

./Opus/asm/formatn.asm in Word v1.1a:

  ; /* Following comment is preserved verbatim for eternity */ ; /* Rounding becomes a non-existant issue due to brilliant re-thinking */ ; /* "What a piece of work is man ; How noble in reason ; In form and movement, ; how abject and admirable..." ; Bill "Shake" Spear [describing Sand Word] */ 

A source