that is totally cool! nice job on the homemade crossover cable. I have been diving into rascsi - I have 2 of them: 1 connected to my 520 and another connected to a Classic II. In addition to emulating multiple scsi devices, the raspberry pi's also emulate a daynaport scsi2ethernet adapter....and wifi, for that matter, which provides network connectivity through the scsi port. And since the raspberry pi's are running linux, they can run netatalk which is an apple file sharing server for linux. This works really well, allowing the macs to share files through the pi's shared folders.