Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!sdd.hp.com!decwrl!ucbvax!CONCOUR.CS.CONCORDIA.CA!goldfish From: goldfish@CONCOUR.CS.CONCORDIA.CA (-- Paul Goldsmith) Newsgroups: comp.sys.apollo Subject: Re: postcript file to postcript printer Message-ID: <9009232117.aa11102@concour.cs.concordia.ca> Date: 24 Sep 90 02:17:32 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 25 | From: David Krowitz |Krowitz> The RS232 connector on a DN3500/4500 actually has 3 SIO |Krowitz> ports wired to it. The first port (/dev/sio1 or /dev/tty01) |Krowitz> uses the normal pin locations (pins 1, 2, 3, 6, 7, 20, etc) |Krowitz> that you would expect on the DB25 connector. The 2nd |Krowitz> (/dev/sio2 or /dev/tty02) and 3rd (/dev/sio3 or /dev/tty03) |Krowitz> ports are wired to the pins on the DB25 connector which are |Krowitz> not normally in use. You can get an expander block from the |Krowitz> Instant Apollo catalog which will give you 3 DB25 connectors |Krowitz> wired with the pins in the regular positions. |Krowitz> Check that the SIO line parameters (baud rate, number of stop |Krowitz> bits, etc.) | are set up correctly before you use "cat |Krowitz> file.ps >/dev/tty01". You can | use "/com/tctl -line 1" to |Krowitz> display the current SIO line settings. One other thing that should be considered, the "tty" devices are, at best a very un-funny joke and at worst a terrible waste of system managers' time. There are more "standard" features omitted than included in the capacities of the serial ports and they don't do very much well. -- Paul Goldsmith (goldfish) (514) 848-3031 (Shirley Maclaine told me there would be LIFETIMES like this)