Hi! I am working with one of the N8VEM builders to make an interface to allow a generic Z80 CPU computer (DIP 40 socket) to interface to the N8VEM PropIO board. The benefit of this would be that any Z80 computer with a DIP 40 socket could add VGA, PS/2 keyboard, and microSD capability. I think this would be helpful for debugging and also transferring data from legacy platforms. http://groups.google.com/group/n8vem/msg/b287ef9fbe0f1e8d Since the board plugs directly into the Z80 CPU socket it is independent of any particular bus. Any new installation would require custom software for the platform. It appears the KayPro can access the PropIO using MBASIC so writing software should be practical. In theory, this approach may be applicable to any of the N8VEM ECB peripheral boards (Disk IO, VDU, prototyping board, etc). The concept may be applicable to other CPUs with the appropriate shim socket PCBs. I believe this could be particularly helpful for classic computers that lack an active development community. If anyone is interested in doing some experimentation with your vintage Z80 computer please contact me. Thanks and have a nice day! Andrew Lynch