Subject: Re: serial line speeds...
To: Phil Knaack <flipk@idea.exnet.iastate.edu>
From: Sean Berry <spberry@execpc.com>
List: current-users
Date: 12/12/1997 08:07:33
According to the spec it's not supposed to go faster than 9600 ( the spec
was written in the 50s or 60s, when hardcopy terminals were the norm, and
300 baud modems hadn't been dreamed of yet (110 baud!).
But, I've got a Bitsurfr Pro that does 115.2, and up to 512k or so. :)
Sean Berry is an ISTJ cellist who works in netbsd. (must have more toys)
I imagine someone is likely to misinterpret
my opinions as those of my various employers. This is not the case.
On Thu, 11 Dec 1997, Phil Knaack wrote:
> >Somewhere in the include files I found 230400 Bps as a standard terminal
> >speed, it is however not accepted by stty or pppd. I noticed that the speed
> >in termios.h is represented with an unsigned int value. Does this mean max.
> >serial speed is 65565 Bps???
>
> You're thinking of a 'short' type (16-bit). An 'int' is a 32-bit value.
>
> And the limit of u_short is 65535, btw. :)
>
> As for speeds > 115.2k, do such animals exist in the RS-232 world?
> I know there's RS-422 (twisted-pair) or whatever its called ..
>
> Cheers,
> Phil
> --
> Phillip F Knaack
> Systems Administrator, Information Development -- Expanding Awareness (IDEA)
> Tech Junkie / Junk Techie / Administrator of Many Dinky Computers
> Iowa State University Extension
>