I just acquired an 11/23 with RT-11 5.03. It has a DZV11-A board that I would like to use to interface a LA75 serial printer. Running 'show' indicates an LS slot. I have a set of RT-11 documentation and the 11/23 manual, but so far have not found instructions on how to do this. Thanks for any help, Barry Skidmore -- Barry Skidmore <skidmore(a)worldvenue.org>