JEREMYM@EPVAX.SUSSEX.AC.UK.UUCP (11/26/87)
We have connected up our HP Laserjet series II to the printer port of a DMF32,
but it is necessary to make up a simple circuit to invert the strobe and
busy lines, which can be powered from the printer.
You should also ensure that the DMF32 is correctly configured to
support an LP32 by setting switch 4 of switch pack 3 OFF. (this is located
on the distribution panel).
The connections are as below:
VAX signal HP
26 DATA1 2
30 RET 20
20 DATA2 3
24 RET 21
22 DATA3 4
28 RET 22
1 DATA4 5
33 RET 23
24 DATA5 6
25 RET 24
23 DATA6 7
34 RET 25
5 DATA7 8
30 RET 26
6 DATA8 9
28 RET 27
|\
8 --| \O---- 1 Inverter on STROBE
| /
|/
14 CONN VFY GND
12 ON LINE 32 FAULT
/|
18 --O/ |---- 11 Inverter between DEMAND and BUSY
\ |
\|
We use pin 18 on the HP to provide 5v for the 74LS04 ic, decoupled by 100uF
NB the DMF32 manual is WRONG. The strobe is on pin 8 NOT 37 !!!
We set up the printer thus:
$ set printer/cr/lowercase/printall/passall lca0:
and define appropriate forms for our prestige font cartridge ( I'll mail them
if anyone wants. They're pretty trivial, though.)
To print graphics, do a $print/passall to stop the print symbiont messing
around.
DISCLAIMER: If you blow anything up, dont't blame me! It works for us.
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Jeremy Maris
Experimental Psychology, | JANET: jeremym@uk.ac.sussex.epvax
University of Sussex, | EAN : jeremym%sussex.epvax @ EAN-RELAY.AC.UK
Falmer, | EARN : jeremym@epvax.sussex.ac.uk
Brighton, | ARPA : jeremym@epvax.sussex.ac.uk *OR*
E.Sussex BN1 9QY | ARPA : jeremym%sussex.epvax@ukacrl.bitnet
UK |usenet : ...mcvax!ukc!epvax!jeremym
Tel: +44 (0)273 678060