Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!samsung!shadooby!sharkey!b-tech!zeeff
From: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Newsgroups: comp.unix.i386
Subject: Re: Third serial port
Message-ID: <%??HY=@b-tech.uucp>
Date: 21 Dec 89 20:06:15 GMT
References: <12978@cit-vax.Caltech.Edu>
Reply-To: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Organization: Branch Technology, Ann Arbor, MI
Lines: 19

>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,
>
>Does anybody know if it is possible to use IRQ 2 for a serial port?

The AT bus generally has many unused interrupt lines.  All you have to do is
run a jumper wire from your serial card to something that has a 16 bit
connector.  Try INT 10 or 15 (you need an AT tech ref manual to show you
what pin).



-- 
Jon Zeeff    	zeeff@b-tech.ann-arbor.mi.us  or b-tech!zeeff