It's the website for the s-100 bus that the processors it talks about works with,(i.e, 80486 intel processors). It's a lot of nostalgic 1989 bus verbiage for uber geeks and engineers who make that stuff.
It's kinda amazing how many processors have been put on the bus. The guy who runs the site has built[1] a huge number of both CPU and peripheral boards. The S100 bus sure has an outsized shadow.
[1]http://www.s100computers.com/My%20System%20Index%20Page.htm