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Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

8806.0. "Modem speed and digi" by CSC32::PITT () Wed Feb 12 1997 10:29

    
    
    Previous notes states that on board serial ports are limited to
    38400 and 56600kb, but that other devices can get to speeds up to
    115200. 
    Customer has a digiboard that supports up to 115200, but when she
    attempts to set the speed that high, she gets garbage. 
    Digi suggested that some unix's allow you to set the port for "fast baud 
    300". 
    Any ideas what that might be?

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8806.1 NETRIX::"[email protected]" paradis Wed Feb 12 1997 13:15 22

T.R	Title	User	Personal Name	Date	Lines
8806.1		NETRIX::"[email protected]"	paradis	`Wed Feb 12 1997 13:15`	22
	Support for higher baud rates such as 57600 and 115200 were added in V4.0 of Digital UNIX. If your customer is using and earlier version than V4.0 they will not be able to use the higher baud rates. I'm not sure what Digiboard is referring to as far as using 300 baud to get at the higher baud rates but I suspect that some type of patch to the kernel was provided that replaced the 300 baud setting with the a value that enabled a higher baud rate. This would enable the user to use stty 300 for example to set the higher baud rate. We do not provide that. Your customer would need to upgrade their system to V4.0 or latter. If your customer is using V4.0 or a later release then that is another issue. This could be a problem with the Digiboard driver, which you would have to speak with Digiboard about, or a possible problem with our streams driver. In either case if Digiboard claims their driver runs at the higher baud rates I would have expected that they would have tested this and confirmed it. Did they say that they support the higher baud rates on Digital UNIX? --dennis [Posted by WWW Notes gateway]

Support for higher baud rates such as 57600 and 115200 were added in
V4.0 of Digital UNIX. If your customer is using and earlier version
than V4.0 they will not be able to use the higher baud rates.

I'm not sure what Digiboard is referring to as far as using 300 baud to
get at the higher baud rates but I suspect that some type of patch to
the kernel was provided that replaced the 300 baud setting with the
a value that enabled a higher baud rate. This would enable the user
to use stty 300 for example to set the higher baud rate. We do not
provide that. Your customer would need to upgrade their system to V4.0
or latter.

If your customer is using V4.0 or a later release then that is another
issue. This could be a problem with the Digiboard driver, which you
would have to speak with Digiboard about, or a possible problem with
our streams driver. In either case if Digiboard claims their driver
runs at the higher baud rates I would have expected that they would
have tested this and confirmed it. Did they say that they support the
higher baud rates on Digital UNIX?

							--dennis
[Posted by WWW Notes gateway]