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Re: 50 years ago, CP/M started the microcomputer revolution

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yeti  <yeti@tilde.institute> wrote:
>"internetado" <internetado@fanless.alt119.net> writes:
>
>> Had Digital Research, the company CP/M
>> creator Gary Kildall set up to sell CP/M, accepted the deal with IBM
>> to make CP/M the default operating system for the then newly-created
>> IBM PC, we'd be living in a very different world today.

You could get CP/M-86 with the PC for a small fee, or PC-DOS for free,
or a couple other options including the UCSD P-System.  Most people got
MS-DOS because they didn't have a need or know about the software available
already for CP/M-86.  Note that what was available for CP/M-86 was a tiny
fraction of what was available for CP/M 2.2 on the 8080, even if it was a
lot more than was available for CP/M-68K.

>CP/M was reimplemented by Seattle Computer Products as "Quick and Dirty
>Operation System"[0] and later Microsoft bought it and stripped the
>"Quick and" and kept DOS as name.  Shouldn't that once and forever
>explain how to read the "D" of "DOS"?  o;-)

I wouldn't call Q-DOS and the later PC-DOS reimplementations of CP/M.
The user interface was more or less modelled on CP/M but with a lot of
important things done wrong because the people who did it didn't really
understand CP/M and because engineers shouldn't write code.

It does have lineage from CP/M but less than the lineage CP/M has from
RT-11.  Notice that you use the PIP command to copy files in CP/M like
in RT-11 while PC-DOS introduces COPY, for instance.

>I used CP/M-Z80 for a while and when MSDOS appeared, I avoided it for a
>long time, but when I finally had to do some stuff on it, I immediately
>felt kind of at home due to the similar structure of the OS function
>calls.  That felt strange.  Maybe even a bit shady.

It's less like RT-11, sadly.  And the memory map is very strange to someone
used to writing CP-M 2.2 code.
--scott
-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."

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50 years ago, CP/M started the microcomputer revolution "internetado" <internetado@fanless.alt119.net> - 2024-08-11 18:38 -0300
  Re: 50 years ago, CP/M started the microcomputer revolution yeti <yeti@tilde.institute> - 2024-08-12 11:51 +0042
    Re: 50 years ago, CP/M started the microcomputer revolution kludge@panix.com (Scott Dorsey) - 2024-08-12 15:03 +0000
      Re: 50 years ago, CP/M started the microcomputer revolution Bob Eager <news0009@eager.cx> - 2024-08-12 15:18 +0000
    Re: 50 years ago, CP/M started the microcomputer revolution Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-08-12 23:09 +0000
  Re: 50 years ago, CP/M started the microcomputer revolution The Real Bev <bashley101@gmail.com> - 2024-08-12 08:24 -0700
    Re: 50 years ago, CP/M started the microcomputer revolution D <noreply@mixmin.net> - 2024-08-12 17:12 +0100
      Re: 50 years ago, CP/M started the microcomputer revolution The Real Bev <bashley101@gmail.com> - 2024-08-12 10:04 -0700
        Re: 50 years ago, CP/M started the microcomputer revolution mm0fmf <none@invalid.com> - 2024-08-12 21:45 +0100
        Re: 50 years ago, CP/M started the microcomputer revolution D <noreply@mixmin.net> - 2024-08-12 21:53 +0100
          Re: 50 years ago, CP/M started the microcomputer revolution The Real Bev <bashley101@gmail.com> - 2024-08-13 08:40 -0700
            Re: 50 years ago, CP/M started the microcomputer revolution Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-08-13 21:51 +0000
              Re: 50 years ago, CP/M started the microcomputer revolution The Real Bev <bashley101@gmail.com> - 2024-08-13 21:47 -0700
                Re: 50 years ago, CP/M started the microcomputer revolution Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-08-14 05:41 +0000
                Re: 50 years ago, CP/M started the microcomputer revolution Johanne Fairchild <jfairchild@tudado.org> - 2024-08-14 13:34 -0300
                Re: 50 years ago, CP/M started the microcomputer revolution Rich <rich@example.invalid> - 2024-08-14 19:58 +0000
    Re: 50 years ago, CP/M started the microcomputer revolution Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-08-12 23:12 +0000

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