I have a MicroVAX 2000 that was used to test the hybrid data separator in the 3100 as they came off the assembly line. It has a plastic box attached to the top with a ZIF connector, which is wired to the guts of the 2000 such that the 2000 can reroute the data from the disk drives through the ZIF connector. The test app runs under VMS; it locks itself into memory, switches to the hybrid data separator, then runs tests on the data separator using the disk (RD32) from which it booted. I'll have to take a picture of it someday and put it on a web site somewhere. I wound up with it because the company that made the data separators couldn't figure out how to break into the system. I had the console auto-log into an account that just ran the test app. All they had to do to break in was hook a terminal up to the 25-pin port and punch ENTER... Roger Ivie ivie(a)cc.usu.edu