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Conference vaxaxp::vmsnotes

Title:VAX and Alpha VMS
Notice:This is a new VMSnotes, please read note 2.1
Moderator:VAXAXP::BERNARDO
Created:Wed Jan 22 1997
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:703
Total number of notes:3722

191.0. "Serial baud rate" by MLNCSC::DELLAPERGOLA () Thu Feb 13 1997 06:16


	Hi

	I would like to know what is the maximum baud rate supported
	in OpenVms Axp 6.2-1h3 for Alphastation 255 serial port 
	COM1/COM2. (especially is 115200 supported?)

	I made a search in VMSNOTES and ALPHASTATION conference
	without success.
	

	Thanks and best regards for your help
	Anna Della Pergola
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191.1STAR::LEWISThu Feb 13 1997 09:103
    Well, Forrest would know the precise answer, but I'm pretty sure
    it's not 115200. More like 19200, last I heard. 
    Sue Lewis
191.2BSS::JILSONWFH in the Chemung River ValleyThu Feb 13 1997 11:056
The hardware supports 115200 but you will have to see if the driver for the 
port supports it.

WRKSYS::ALPHASTATION 1552.1

Jilly
191.3Console Ports Traditionally Not Good At High-VolumeXDELTA::HOFFMANSteve, OpenVMS EngineeringThu Feb 13 1997 13:088
   You probably don't want to use the com ports -- and particularly not
   the console port -- for high-volume traffic or networking.

   Be aware that some of the com ports `fake' the higher baud rates,
   by sending the individual characters at the faster speed, but with
   an increase in the inter-character spacing.  In this design, the
   aggregate throughput of the port doesn't increase.
191.419.2K is the official limitSTAR::KENNEYWed Feb 19 1997 23:426
    
    	The official limit is 19.2K.  The code as of V7.0 will let you set
    speeds up to 57.6K.
    
    
    forrest