Hi all! I believe that a few years ago I posted about getting some help in replicating the Bally/Astrocade through an FPGA using an HDL. Now, thanks to Mike Johnson and other cores from this site, T80, we are very close to eing finished. Currently, Mike has gotten a high-res VHDL simulation of the Bally/Astrocade running on a Spartan 3e starter board. I am trying to wrap up some final pieces before a daughterboard or motherboard replacement is created. I would like to get some help in brute-force replicating the INS8154 that is used in the Blue RAM system for the Bally/Astrocade. The INS8154 is a 128 by 8-bit RAM I/O. Nothing fancy but having it replicated will allow use of the various Blue RAM utilities. We have found a simple ADC chip to get the four knob inputs from the Bally/Astrocade and that will be utilized once we have the everything else in place. Again, most of the work has been done. Now it's just a choice of what we do to get a replacement motherboard or a daughter board to an existing FPGA product, such as the XSA-200. Please feel free to contact me at james.krych at us.army.mil or jwkrych at n2net.net Also, please check out www.fpgaarcade.com to view the Bally/Astrocade VHDL simulation and www.ballyalley.com for all things Bally/Astrocade related-including the Yahoo group link. Kindest regards, James Krych