< IIRC the Pro 325 uses an F11 as well, although I've not seen one. The pro325 and 350 are the same machine save for the 325 is floppy only and the 350 had floppy and hard disk. < I am not suprised. Although there's a PDP11 CPU in there, the I/O system < and interrupt structure is nothing like any other PDP11... the primary thing was the memory mapped video. the PDT-11 also had strange IO. Allison