rjd@nancy (Rob Demillo) (10/13/87)
We recently received an Apple LaserWriter at our lab. It
just so happens that our lab also has several STs. I have
failed in my attempt to connect the STs up with the
LaserWriter. Can someone out there give me the correct
pinouts and serial port settings to insure a proper
connection?
Thanks.
- Rob DeMillo
Brown University - Planetary Science Group
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paulm@nikhefk.UUCP (Paul Molenaar) (10/15/87)
In article <19311@brunix.UUCP> rjd@brunix.UUCP (Rob Demillo) writes: > >We recently received an Apple LaserWriter at our lab. It >just so happens that our lab also has several STs. I have >failed in my attempt to connect the STs up with the >LaserWriter. Can someone out there give me the correct >pinouts and serial port settings to insure a proper >connection? > > - Rob DeMillo As far as I know you just set the LaserWriter to 9600 (switching off AppleTalk) and using a terminal emulator on the ST, capable of transmitting at 9600 (8 databits, no parity, 1 stopbit). It's possible also to transmit at lower speeds when the LaserWriter knob is set to a lower speed (masochists can go down to 1200 baud, I believe ;) If u wanna use Diablo 630 emulation, you set the knob to 'Special'. BTW, the LaserWriter accepts any RS-232 cable. 3 wires (Transmit, Receive and Ground) are plenty as it uses XON/XOFF as protocol. Hope this helps. PS Don't forget using the DB-25 connector on the back, the other one is for AppleTalk. You might blow up the AppleTalk interface if used incorrectly. Paul Molenaar "Just checking the walls" - Basil Fawlty - -- Paul Molenaar "Just checking the walls" - Basil Fawlty -
weaver@tut.cis.ohio-state.edu (Andrew Weaver) (10/16/87)
Rob:
Ahh, a question that I can answer (I am a cable-geek for the Business
school here at OSU.)
Here is how to attach the Apple LaserWriter (or LaserWriter Plus, I
assume) to your ST (via the serial port):
Basically what one needs is a "null modem cable"; a phrase that
derives from when you hook two computers together directly bypassing telephone
modems. ANYWAY, here is the cable pinout:
ST LaserWriter
================ ===================
2 (TxD) ------------------------------------------------ 3 (RxD)
3 (RxD) ------------------------------------------------ 2 (TxD)
7 (Gnd) ------------------------------------------------ 7 (Gnd)
You might connect 8 to 20 and 20 to 8, but I didn't need to. Also,
this (obviously) is attached to the 25 pin port of the LaserWriter. Make
sure as well you turn the knob labelled "Special--9600--1200--Appletalk"
to the "9600" position. (Unless, of course, you want to run it at 1200 :-)
Worked with Publishing Partner for me; and should work with anything
that pumps out PostScript output.
This is well and good if you have cable-making tools; a retailer
might charge ~$15-~$25 for such a thing (a real joke; parts cost around $2!)
Here is a question for you hardware hacks out there: has anyone
thought about implementing AppleTalk on the STs?
Cheers, Andy...
--
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---ARPA: weaver@ohio-state.ARPA---------------------------- UNIVERSITY --fyl@ssc.UUCP (Phil Hughes) (10/17/87)
In article <19311@brunix.UUCP>, rjd@nancy (Rob Demillo) writes: > We recently received an Apple LaserWriter at our lab. It > just so happens that our lab also has several STs. I have > failed in my attempt to connect the STs up with the > LaserWriter. Can someone out there give me the correct > pinouts and serial port settings to insure a proper > connection? The only thing the LaserWriter cares about is pins 2, 3 and 7. I think the Atari doesn't care as well but I have the standard 4-5-6 and 8-20 jumpers on the connector. Actually, I don't have the Atari hooked to the LaserWriter. I run the Atari as a terminal on our UNIX system and have the LaserWriter on the UNIX system (thus, I can stick Atari generated PostScript in with troff/devps generated PostScript but I know that only 2, 3 and 7 are connected on the LaserWriter. -- Phil Hughes, SSC, Inc. P.O. Box 55549, Seattle, WA 98155 (206)FOR-UNIX or 527-3385 ...!uw-beaver!tikal!ssc!fyl