romig@osu-dbs.UUCP (11/10/83)
Can someone out there give me answers to the following questions:
(1) In the manual entry for the lp device (4.1 BSD, lp(4)), it claims
that 'lp' is a driver that copes with all standard DEC printer
interfaces, or something like that. Can someone tell me what
the 'standard' DEC printer interface is?
(2) We are attaching a Xerox 2700 laser printer to our Vax. We have
the option of using one of two interfaces:
a. Dataproducts 2260 line printer interface
b. Centronix line printer interface
Will lp deal with either of these? Which of these is same as/
compatible with the 'standard DEC interface'?
(3) If you have had experience dealing with Xerox 2700's on Vaxes
running 4.1 or 4.2 BSD, and think those comments would be
helpful for someone bringing up a x2700, would you please
share them with us?
Thanks for listening, at least...
Stevehoffman@pitt.UUCP (Bob Hoffman) (11/17/83)
The 'standard' DEC line printer is a Data Products drum printer of some variety that has practically no special features at all. It's connected to a parallel interface card on a UNIBUS with the following parameters: *CSR: Address 0777514 Bits: 0100000 Error 0200 Done 0100 Interrupt Enable BUF: Address 0777516 Bits: 0177 Data (7 bits) Interrupt vector: 0200 As you can see, there's nothing to it. By the way, the 'Data Products Interface' is a de-facto standard for printers, as is Centronics, and several manufacturers make boards that use it. ---Bob Hoffman, U. of Pitt Computer Science idis!pitt!hoffman hoffman.pitt@CSNet-Relay __ * This information came from the 1973-74 Peripherals Handbook. Ah, things were simpler, then. -b
nrf@whuxle.UUCP (11/20/83)
#R:osu-dbs:-38800:whuxle:20900002:000:455 whuxle!nrf Nov 20 14:50:00 1983 Note that there are two flavors of Dataproducts interfaces, the 'Vanilla', capable of going a "short" distance (100ft?), and the 'long-lines' flavor, capable of going a greater distance (1000ft?). the Xerox 2700 uses the 'Vanilla' flavor dataproducts interface, so if you desire a longer cable, count on spending about $500 on a box at the printer end to convert between the cable and 2700. Neal Fildes A.T.&T. - Bell Laboratories Whippany, NJ, U.S.A. -- Neal Fildes A.T.&T. - Bell Laboratories Whippany, NJ, U.S.A.