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Groups > comp.os.msdos.programmer > #3952

Re: Running MS-DOS in terminal mode

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Grant,

> I know that there are ways that you can run ad-hock commands through the 
> COM port.  One of the most common I remember seeing was the method to get 
> INTERLNK / INTERSVR onto a computer that didn't have the necessary
...
> But the point being the source computer was controlling the target 
> computer, and DOS thereon via the COM port.

Alas, It didn't/doesn't (control DOS / the 'puter).

Instead of that it just relies on redirection.of output / input (to/from 
file).    Remember how you can do "dir > file.txt" ?   Well, you can do the 
same with all kinds of in/output handles.  The above method you mentioned 
was simply to redirect the output of the COM port to file (with a ".com" 
extension), and than execute that file.

Mind you, that (received by COM) data has been rather specifically created 
to be able to be piped into a file and than executed that way.   Definitily 
not "just" some executable (if you want to know more about it I suggest you 
ask for it in "comp.lang.asm.x86").

Bottom line : controlling the 'puter using just the COM port is *not* build 
into the OS.   Even if you would be able to redirect the COM port as input 
to / output from the commandline there are just too many programs that use 
something else than plain (int 0x21) character reads-and-writes which will 
break it.

Regards,
Rudy Wieser

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Thread

Running MS-DOS in terminal mode Ruud Baltissen <rbaltissen@gmail.com> - 2021-04-15 06:17 -0700
  Re: Running MS-DOS in terminal mode "muta...@gmail.com" <mutazilah@gmail.com> - 2021-04-15 08:38 -0700
    Re: Running MS-DOS in terminal mode "muta...@gmail.com" <mutazilah@gmail.com> - 2021-04-15 09:11 -0700
  Re: Running MS-DOS in terminal mode Grant Taylor <gtaylor@tnetconsulting.net> - 2021-04-19 19:29 -0600
    Re: Running MS-DOS in terminal mode "R.Wieser" <address@not.available> - 2021-04-20 08:56 +0200
      Re: Running MS-DOS in terminal mode Grant Taylor <gtaylor@tnetconsulting.net> - 2021-04-20 09:33 -0600
        Re: Running MS-DOS in terminal mode "R.Wieser" <address@not.available> - 2021-04-20 19:21 +0200
          Re: Running MS-DOS in terminal mode Grant Taylor <gtaylor@tnetconsulting.net> - 2021-04-20 13:43 -0600
            Re: Running MS-DOS in terminal mode "R.Wieser" <address@not.available> - 2021-04-20 22:48 +0200
  Re: Running MS-DOS in terminal mode Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2021-04-20 22:58 +0000
    Re: Running MS-DOS in terminal mode Ruud Baltissen <rbaltissen@gmail.com> - 2021-04-27 23:13 -0700
      Re: Running MS-DOS in terminal mode Grant Taylor <gtaylor@tnetconsulting.net> - 2021-04-28 11:01 -0600
        Re: Running MS-DOS in terminal mode Mateusz Viste <mateusz@xyz.invalid> - 2021-04-29 08:11 +0200
      Re: Running MS-DOS in terminal mode "R.Wieser" <address@not.available> - 2021-04-28 20:37 +0200
        Re: Running MS-DOS in terminal mode Ruud Baltissen <rbaltissen@gmail.com> - 2021-04-28 22:47 -0700
          Re: Running MS-DOS in terminal mode "R.Wieser" <address@not.available> - 2021-04-29 09:11 +0200

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