[mod.computers.vax] interpreting show err reports for terminal ports

AWalker@RED.RUTGERS.EDU (*Hobbit*) (10/22/85)

In keeping with this:  How do you get ERF to generate error log reports for
terminals in general?  ANAL/ERR/INCL=SYNC/SINCE=... does *not* show me
errors on TT or TX devices, last I checked.  Is there some magic I'm missing?
The manual is pretty sad.

_H*
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wjs@edison.UUCP (10/29/85)

Normally, the terminal drive generates these errors. However, the terminal
driver never logs them into the errorlog. The errors could mean that
you have a bad port or distribution panel. A reboot will clear the error
count, however, you may want to make sure all your cables are plugged in
correctly. I guess it is possible to have a bad terminal generate bad signals
which could be interpreted as an error. So, you might want to use another
terminal to check the port. Use another port to check the terminal. If you
pay for maintenance, you may just give the maintenance folks a call and
let them look at it. Anyway, It the problem persit, do not ignore it.

richardson_j@summer.su.oz.UUCP (11/10/85)

[]

We used sometimes to get thousands of errors on our terminal ports, which
are Able VMZ32Ns, until we took Kevin Carosso's advice and set the SYSGEN
parameter TTY_DEFPORT (new in VMS V4.1: not TTY_DEFPROT) to 1.  This stops
VMS using the "AUTOXON" feature which (perhaps) works on DEC's DMF-32 but
doesn't on VMZs.  Thanks, Kevin!

We then got dozens of errors until we took Reinhard Goeth's advice and set
/DMA on the VMZ lines.  This is most easily done by altering the SYSGEN
parameter TTY_DEFCHAR2 so that bit TT2$M_DMA = 64 is set; e.g. change it
from the default value 4098 to the value 4162.  As mentioned in a recent
Software Dispatch (July?), the default in VMS V4 is /NODMA, unlike V3,
and contrary to the documentation in the Terminal Driver chapter of the I/O
User Manual.  Thanks, Reinhard!

Now we only get a few terminal errors per month.

(Is everyone on Usenet aware that because of a bug in the setting up of
the new mod.computers.vax arrangements, one may not see one's own articles,
and neither may other news readers along the mail path from originator to
sri-kl?)

--
Jim Richardson
Department of Pure Mathematics, University of Sydney, NSW 2006, Australia
UUCP:	...!seismo!munnari!summer.oz!jimr
ARPA:	jimr%summer.oz@seismo.arpa		CSNET:	jimr@summer.oz