Accessing I/O ports in Linux

From: Robert E. Wiersbe (rwiersbe_at_comcast.net)
Date: 08/28/03 

Date: Thu, 28 Aug 2003 16:08:54 -0500

I need to access the GPIO (general purpose I/O) port on the motherboard
I'm using (Radisys BG845G). I'm running Red Hat 9.0. I need to be able
to read/write this port from inside a C program. The address offsets are
0x62 and 0x66, but I don't know the base address.

Can someone give me an idea of how to find the base address, and then
access these ports using C?

Thanks!

Bob Wiersbe

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