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Retrocomputing

Questions tagged [operating-system]

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Operating systems on retrocomputers generally.

120 questions
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2 votes
1 answer
442 views

I'm trying to write an OS for the W65C02 CPU but i'm stuck because I have no idea on how to implement concurrency on such old CPU.
Elia C.'s user avatar
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5 votes
2 answers
1k views

I want to see what NextStep was all about. I have this idea that NextStep was Steve Jobs' Magnum Opus, and I want to see if it is as good as I think it is. This is how I would approach playing with it,...
Neil Meyer's user avatar
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9 votes
3 answers
1k views

CP/M and MS-DOS had several characteristics are derived from DEC operating systems, such as Control-Z EOF, the coloned device name (drive letter) prefix of file identifiers, 3-character filename ...
George Jonathan Williams's user avatar
  • 355
11 votes
0 answers
337 views

On page 269 of the June 1980 issue of BYTE there is an advertisement from Electrolabs (in Stamford, CT) for an operating system called OS-1, a "new Unix-like operating system for Z-80." Did ...
cjs's user avatar
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25 votes
5 answers
4k views

The parody essay Real Programmers Don't Use Pascal (1983) states: What kind of tools does a Real Programmer use? In theory, a Real Programmer could run his programs by keying them into the front ...
Arbel Groshaus's user avatar
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0 votes
3 answers
1k views

This was asked by @ilkkachu in comments, but I've always wondered about it myself. Unix, Posix, AIX, HP-UX, IRIX, Linux, Minix, Ultrix, Xenix... not to mention Active-X and Xbox. I know it all began ...
Miss Understands's user avatar
  • 4,783
8 votes
1 answer
1k views

I just came across a spec sheet for the little-known Rockwell PPS-8. It states that development is possible on Tymshare, Genie, or "Rockwell TSO". Googling the latter turns up nothing, and I ...
Maury Markowitz's user avatar
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12 votes
0 answers
315 views

Aspen was Amdahl's project to build their own clone of IBM's MVS mainframe operating system. Amdahl cancelled the project at some point in the 1980s (1987?). It was never formally released, but (...
Simon Kissane's user avatar
  • 3,998
-4 votes
1 answer
310 views

I always thought it was either because the system was capable of supporting a disk file system or because parts of the operating system are swapped to disk. If DOS means the latter, was there a non-...
Miss Understands's user avatar
  • 4,783
13 votes
2 answers
3k views

It seems that MS-DOS was primarily written in assembly even in its last versions. I understand that new versions of Windows such as the NT-based versions currently in use, and Windows 95 .. ME which ...
juhist's user avatar
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16 votes
6 answers
7k views

Why were there so many OSes named "DOS" in them? For example, there was PC-DOS, DR-DOS, MS-DOS, and probably a few others. Couldn't the names of those OSes have something apart from having ...
Lenin's user avatar
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2 votes
0 answers
271 views

Which first operating system implemented system calls? It should answer to the following characteristic I guess: resident program which exposes low level services (doesn't matter what be it read the ...
Boris's user avatar
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6 votes
0 answers
181 views

Recently I learned that there was an operating system for the BESM-6 mainframe developed in DDR: a bibliographical list includes and quite a few more German-language publications (up to item 105), ...
Leo B.'s user avatar
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2 votes
2 answers
282 views

I am reading the User Guide of CP-67. Under the command DUMPD (page 373), it describes its Purpose as: The DUMPD command prints the contents of one direct-access record, specified by a CCHHRR address,...
George Jonathan Williams's user avatar
  • 355
17 votes
3 answers
3k views

It is well-known that, for quite a while, UNIX passwords were hashed using the DES algorithm (see here). However, DES was not published until 1975 and not standardized until 1977. What were the multi-...
Leo B.'s user avatar
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