I think if I was in need of IO I would go the USB route rather than fooling with the internal bus. There are many options out there like these -

http://www.audon.co.uk/usb_digital/usbpio.html

http://www.mccdaq.com/google-landing/google-usb.aspx?MC=10GGL&gclid=CIC39bWwlbsCFQ7xOgodFgQAPQ

and many others...  google 'usb io cards'

It also makes it much more flexible across different platforms. Everything has USB.

73 Doug
WA3DSP
http://www.crompton.com/hamradio




From: mike@midnighteng.com
To: app_rpt-users@ohnosec.org
Date: Tue, 3 Dec 2013 17:45:49 -0700
Subject: Re: [App_rpt-users] PCI cards


There are plenty of i/o boards out there to use as such a device. Perhaps you need the right search term.

DAQ
"data acquisition and control" for other words. Put your programming hat on.

But,
For simplicity and cost, you should only look for a PCI printer port card and hijack the lines internally or the built in port externally "if I understand what you are doing".

I'v been using the PP for repeater control lines since '95 in a DOS box. I just use a opto-coupled transistor converter board used in CNC machines to protect the computer from lightning damage (and a mistaken short).

...mike/kb8jnm
-------- Original Message --------
Subject: [App_rpt-users] PCI cards
From: "Benjamin L. Naber" <Benjamin@kb9lfz.com>
Date: Tue, December 03, 2013 6:36 pm
To: "app_rpt-users@ohnosec.org" <app_rpt-users@ohnosec.org>

anyone have any experience with making there own radio controllers/relay
boards that go into PCI slots?

Any pointers?

~Benjamin, KB9LFZ

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