Modem problem with Xenix 2.3.3
Donald H Madsen
dhmadsen at icaen.uiowa.edu
Sun Mar 24 04:25:59 AEST 1991
I am using Xenix386 2.3.3 and VP/ix 1.2 and after much searching have
discovered that at random times DCD goes slowly low and makes it
impossible to continue communication. This happens when using C-Kermit
and while using the DOS program Mirror III. It only happens infrequently,
but when transferring long files it does happen.
It is frustrating after most of a long file has transferred to have it
stop. If an attempt to leave the DOS communication program is made, it
hangs the terminal before completing the exit of VP/ix and the system
must be rebooted.
It seems likely that the problem is withing the serial driver. It happens
whether I use the com1 port directly or when I use one of the 8 ports or
a non-intelligent version of a DigiBoard (PC/8).
The symtoms include line 8 (DCD) suddenly going low and line 20 RTS staying
high. It happens with a 2400 Baud modem and with a 9600 Baud modem.
Any suggestions will be most appreciated.
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