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Date:      Thu, 1 Feb 1996 11:37:55 -0600 (CST)
From:      Joe Greco <jgreco@brasil.moneng.mei.com>
To:        didier@omnix.fr.org
Cc:        hackers@freebsd.org
Subject:   Re: serial ports on shared irq
Message-ID:  <199602011737.LAA09182@brasil.moneng.mei.com>
In-Reply-To: <Pine.BSF.3.91.960131200401.9298A-100000@zapata.omnix.fr.org> from "didier@omnix.fr.org" at Jan 31, 96 08:05:25 pm

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> hi
> 
> is it possible to use serveral serial port on the same irq (4 port board)
> 
> thanks 

Yes.  Here's a "BlackBoard" something or other, similar to other 4port cards:

device          sio4    at isa? port 0x200 tty flags 0x0705
device          sio5    at isa? port 0x208 tty flags 0x0705
device          sio6    at isa? port 0x210 tty flags 0x0705
device          sio7    at isa? port 0x218 tty flags 0x0705 irq 12 vector siointr

Set for ports at 0x200 and interrupt 12 obviously enough.  Don't forget to
include COM_MULTIPORT in your options.

... Joe

-------------------------------------------------------------------------------
Joe Greco - Systems Administrator			      jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI			   414/546-7968



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