Re: Serial Port Baud Rates faster than 115200 on PC

From: Randy (spamtrap_at_crayne.org)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 19:43:18 +0000 (UTC)

Makhan wrote:
> Hello,
>
> Is it possible to obtain Baud Rates faster than 115200 on PCs? What
> should I look for in the hardware that would give me a clue as to how
> fast I can get?
>
> I have a Dell with dual processor 3GHz, so I guess the system is
> pretty new. I have tried opening the com1 port on hyper terminal with
> 240300 baud but it gives an error opening port message.

As I understand it, the maximum data rate of the 16550a UART is 115,200 BPS.
However, a 16C650 can be driven to 230,400 BPS. (Your number of 240300 seems to
have exchanged the 3 and the 4 from what it should be).

I think the only alternative to better hardware (like USB) would be something
like channel bonding several RS-232s. I have no idea whether any drivers exist
that can do this. Of course, you'd need them at both ends of the link.

A useful URL: http://www.beyondlogic.org/serial/serial.htm

    Randy 

-- 
Randy Crawford   http://www.ruf.rice.edu/~rand   rand AT rice DOT edu