Quick update – holes drilled and components soldered in (except for AVR’s, which go into sockets). Power supply checks out OK. I will be able to bring up USB and Disk interface sections separately. Communications between the two AVRs is through a serial interface and I have added a header which will allow me to interface from a RS232 port on a PC directly to each AVR, during initial bring-up. First, I intend on bringing up the Disk interface to state where I left it on original proto board. Some tweaks to the SW must be made because of change in AVR versions, but this shouldn’t take very long. Once that is working, I’ll bring up the USB interface. Finally I’ll combine the two and work on host protocol, which is the last major activity planned for this project.