Path: utzoo!attcan!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: schwer@unix.sri.com (Len Schwer)
Newsgroups: comp.sys.sun
Subject: SLC ignores VT100 terminal on serial port after reboot?
Keywords: Hardware
Message-ID: <911@brchh104.bnr.ca>
Date: 19 Dec 90 14:28:07 GMT
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Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 407, message 11
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I have a VT100 termninal (actually a Mac SE running VersaTerm Pro
emulation of a VT100). I have managed to use the terminal emulation often
over the past 4 months I've had the SLC. The problem occurs when I need to
reboot the SLC for various reasons.

Upon reboot, the SLC won't recognize the VT100 hanging on the serial port.
I am using Sun's split A/B cable with the B side and a null modem in the
line. I have solved this problem twice  by just plugging and unplugging
connectors and null modemes and A/B cables until I for some random reason
the SLC is suddenly happy. What I don't understand is I didn't change any
connections between using the VT100 (I actually used the VT100 to halt the
system because the screen lock wouldn't unlock) and the reboot.

The only clues I have are when I change the parity of the VT100 emulation,
the console on the SLC reports: "vmunix" zs1: parity error ignored" I have
check the /ect/termcap file and VT100 is still there, /etc/ttytab has both
the A and B ports turned on at 9600, and I've issue a zillion "kill -HUP
1".

Anyone got any suggestions?   Thanks,  --Len Schwer  schwer@unix.sri.com