Here is a quick sketch of the chipset block. I will see how well it fits.
seta.. let me see what I can do. I haven't even finished designing one for the version I have in my hands, let alone the other two.
The easier I make things, the faster I can bang them out. Solo projects tie up my machine for a very long time. If nothing is going on and I have a quiet spell with orders then hell yea, why not.