Third serial port
Timothy L. Kay
tim at cit-vax.Caltech.Edu
Mon Dec 18 09:07:57 AEST 1989
I am having trouble installing a third serial port in my 386 running
ISC Unix/386. I have the X5 update (new serial driver). I have the
card set to IO address 3E8 (COM3), IRQ 2, and I have added appropriate
lines to /etc/conf/sdevice.d/asy and remade the kernel.
Unfortunately, I don't seem to be getting any interrupts from that
device. All output seems to be at about one character per second,
which I would guess means that the driver is timing out. No input
appears.
Does anybody know if it is possible to use IRQ 2 for a serial port?
Is it possible to share interrupts (can I put two ports on the same
interrupt and have it work)?
Thanks in advance,
Tim
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