Cheers for the reply, thats one set of problems dealt with at least.  The MC 
PCI DIO24 actually suggests buying 8 2.2k ohm SIP packages, theres actually 
free space on the PCB to what appears to be solder them in place.  Its an odd 
way of doing it but I see the logic.

I think my Rivendell issue is mostly because I'm not running caed etc as root.  
I'll reconfigure the box and temporarily switch of jack to test that once I'm 
back at work.


-----Original Message-----
From: [email protected] on behalf of Sébastien 
Leblanc
Sent: Fri 17/08/2012 01:22
To: User discussion about the Rivendell Radio Automation System
Subject: Re: [RDD] Newbie GPIO question
 
Sorry for the multiple responses...

As for what you should do, you should use physical resistors (that
would be my prefered solution) as software switches can sometimes,
accidentally or for no apparent reason, get reset and then you get
erratic behaviour. Those pull-(up|down) resistor software switches
actually enable real, internal resistors inside the chips. Using
physical resistors outside of the chips will not affect wether the
internal ones are enabled or not, so you are better off using physical
resistors.

-- 
Sébastien Leblanc
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