[Info-vax] DCL Integer Overflow

[Simon Clubley]

On 2017-07-10, Scott Dorsey <kludge at panix.com> wrote:
> Simon Clubley  <clubley at remove_me.eisner.decus.org-Earth.UFP> wrote:
> [regarding CDC NOS]
>>For the benefit of those of us who have never had to use this
>>environment, can you describe how you would carry out some
>>common tasks using this environment, so we can compare the
>>syntax (and semantics) to the syntax/semantics used on VMS or Unix ?
>
> It's a matter of verb,noun,noun.  So to copy a file from X to Y,
> you would type:
>
> COPY,X,Y.
>
> Unless it was a binary file in which case you would do
>
> COPYBF,X,Y.
>
> And there were actually a dozen different copy commands allowing you to
> split up records and blocks and copy to and from tape volumes.  Every file
> on disk has a file pointer attached to it, so you have to type REWIND,FILE.
> before starting to use it.  The file paradigm is very tape based even though
> everything is on disk.
>

[snip]

Thank you Scott and Arne for the writeups; yes, I see what you mean now.

BTW, that terminal I/O model sounds somewhat like the IBM block terminal
and channel I/O model.

Thanks,

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Microsoft: Bringing you 1980s technology to a 21st century world