Another option for you to consider is to look into IP that can be programmed into an FPGA to make the 8279 functionality.


Here is a link to such IP that is written in VHDL and can be targeted to your favorite FPGA:



http://www.aldec.com/IP_Services/Datasheets/8279.pdf



Here is another one:


href="http://www.altera.com/products/ip/ampp/cast/m-cas-c8279.html">
http://www.altera.com/products/ip/ampp/cast/m-cas-c8279.html



Hope this helps

Mike Karas