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Re: OS2200 MFD question

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On 2025-01-11 3:06 p.m., lewiscole wrote:
> Setting aside the issue of whether or not you are legally allowed to
> look at the internals of the disk file image (I thought disassembly was
> one of the things forbidden in the license),

Not sure how this differs from using IOW$ to explore the file system 
from within OS2200 itself. The same info is being looked at one way or 
another. This way is just easier since I don't have to mess with MASM. 
Also, like I said, this is strictly an academic exercise. It's not like 
I'm trying to reverse engineer Exec. That would be a career not a hobby 
and I'm way too old for that.

> Unfortunately, Univac/Sperry Univac/Sperry/Unisys (USUSU) has had a long
> standing habit of making such old manuals disappear and so I suspect
> that it will be virtually impossible for you to find such a manual.
> 

Very true. I have an old version of the Data Structures manual and there 
is a lot of stuff in there that isn't in the new one. There are problems 
with even the old manual though. First, it assumes a level of knowledge 
of Exec internals that I simply don't have. Second, it is out of date. 
The structures described in the manual don't always match the latest 
version. Third, it is just plain vague in places. Which was always a 
problem with Univac docs, 1100 or otherwise.

I even tried looking at the source for an old version of the MFD 
processor. But, like the manual, it is out of date and some of the code 
simply doesn't match the modern reality.





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OS2200 MFD question Stephen Boyd <sboydlns@gmail.com> - 2025-01-11 09:29 -0500
  Re: OS2200 MFD question l_cole@juno.com (lewiscole) - 2025-01-11 20:06 +0000
    Re: OS2200 MFD question Stephen Boyd <sboydlns@gmail.com> - 2025-01-12 10:22 -0500
      Re: OS2200 MFD question l_cole@juno.com (lewiscole) - 2025-01-12 18:49 +0000
        Re: OS2200 MFD question R Daneel Olivaw <Danny@hyperspace.vogon.gov> - 2025-01-13 08:41 +0100
        Re: OS2200 MFD question Stephen Boyd <sboydlns@gmail.com> - 2025-01-13 10:02 -0500
          Re: OS2200 MFD question l_cole@juno.com (lewiscole) - 2025-01-15 02:04 +0000
            Re: OS2200 MFD question David W Schroth <davidschroth@harrietmanor.com> - 2025-01-31 22:34 -0600
              Re: OS2200 MFD question l_cole@juno.com (lewiscole) - 2025-02-02 20:50 +0000
                Re: OS2200 MFD question David W Schroth <davidschroth@harrietmanor.com> - 2025-02-02 20:23 -0600
          Re: OS2200 MFD question David W Schroth <davidschroth@harrietmanor.com> - 2025-01-31 22:30 -0600
            Re: OS2200 MFD question Stephen Boyd <sboydlns@gmail.com> - 2025-02-01 10:21 -0500

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