[Info-vax] Newbie: change console port speed

Rich Jordan jordan at ccs4vms.com
Wed Aug 26 13:56:07 EDT 2009


On Aug 26, 12:23 am, Slor <se... at rols.ten> wrote:
> I'm guessing someone here can quickly answer a question I've been combing
> the FAQs for the answer to (and probably overlooking).  If possible, I'd
> like to increase the default speed of my serial console higher than 9600
> for my AlphaServer 600.  If it matters, I'm running OpenVMS 8.3.  Someone
> got a quick bit of insight for me there?
>
> thanks!
>
> --
> Jameshttp://www.e-host-direct.com
> Reliable web hosting from $12/year.

I am not sure if its the same on an AS600 as other models I still have
access to.

At the console prompt ">>> " type

SHOW COM*

If it lists out some 'com1' environment variables, including
'com1_baud' then I think all you need to do is

SET com1_baud

to see the supported values.  Then do

SET com1_baud #####

where that is the speed you want.


Note that on many/most Alphaservers, the two built in serial ports are
on the 'legacy' support chipset and may not be very efficient; I don't
know if they put a big load on the CPU the way the old interrupt
driven ones did way back when but don't expect high-speed terminal-
server level performance either.



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