[Simh] Serial Console

[Jan-Benedict Glaw]

On Tue, 2012-07-03 20:16:57 +0200, Johnny Billquist <bqt at softjar.se> wrote:
> On 2012-07-03 19:46, Jan-Benedict Glaw wrote:
> > On Tue, 2012-07-03 18:58:15 +0200, Peter Svensson <psvsimh at psv.nu> wrote:
> > > On Tue, 3 Jul 2012, Jan-Benedict Glaw wrote:
> > > > What about other solutions? I haven't used the simulated DZ up
> > > > to now, but if I get it, it maps the serial ports to
> > > > (telnet'able) IP/Port network sockets, right?
> > > >
> > > > If so, why not simply write a little program to configure the
> > > > serial port and splice it to the network socket? Or a small
> > > > script using `stty' and `nc'?
> > >
> > > Baud rate changes, modem control lines and so on. Break
> > > handling.
> >
> > Okay, you won't really get modem control lines. Baud rate changes
> > won't work, too, but were they *really* used in the wild? I doubt
> > it.
> 
> Baud rate changes were used a lot. Atleast on DEC systems. But even
> more importantly, if you don't implement it, you will have to make a
> decision somewhere as to what speed to use, and the terminal have to
> adapt to that. This might not always be possible.

Are baud rate changes also *crucial* for a working system?

> > And break handling? Right, important for a console. But for eg. simply
> > using a glass terminal or a modem for PPP or something like that, that
> > probably won't be much of a problem.
> 
> Depends on what software you are running. Software can detect and
> deal with breaks. If you can't send them, you might be limiting
> yourself.

Sure it limits the use case using a simple 10-line script (or like 100
lines of C code.) But on the other hand, I guess it would simply work
for almost all usual cases.

MfG, JBG

-- 
      Jan-Benedict Glaw      jbglaw at lug-owl.de              +49-172-7608481
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