Vax 613 0S Instruction Manual Page 26

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MDP
APPLICATIONS
Issue 3 - Vol 2
USER
GROUP
NEWS
NULL
TER~lINAL
FOR
REMOTE
8540/PDB
USE
An earlier issue of User
Group
News
mentioned
the
fact
that
when
running
PDB
on
a remotely accessed 8540,
(i.e
terminal-8560-8540) a terminal or null-terminal connector was still required
on
the
8540 terminal
port.
This
is
required whenever
the
application program uses 8540 SVC calls
to
communicat.e
with
the
console
CONI
and
CONO devices.
The
following null terminal connector can
take
the place
of
the
extra
terminal.
Obtain
a 25-pin male RS-232
type
plug and connect
the
following jumpers:
pin 2
to
pin 7
pin 4
to
pin 6
pin 8 to pin 20
This
setup, although
not
official, has been found to work in
MDP
Marketing.
Feedback
on field use would be
appreciated.
Greg Saville,
Software Applications
Manager
8086
PASCAL
NE\V
/DISPOSE
PATCH
There
is
a problem with the new/dispose
command
in 8086 Pa.scal V01.10-05.
Until
the
next revision,
the
follow-
ing
patch
will correct the problem.
Using
lstr
or symbolic debug on
the
final load file, exa.mine
location"
smalldynqq+OE4" and change
it
from
72H
to
76H.
Greg Saville,
Software Applications
Manager
USING
TEK
PLOTTERS
\VITH 8560
Tek
4662
plotters
may
be
attached
to
an 8560
to
draw 4010-style pictures. User Group Library
Abstracts
contain
a list of pictures for a 4105,
many
of which are in 4010 format.
The
plotter,
in
our configuration,
is
assigned a dedicated RS-232 line
(tty7
in
this
case).
The
file
/
etC/ttYB
is
configured
to
disable logins by changing the first digit for the respective
tty
entry
to
a zero.
The
tty
line
should
also be publicly accessible and configured for 1200
baud.
The
following steps illustrate the above procedure
(assumes user
is
root):
ed
/etc/ttys
/tty7/p
s(./O/
w
q
chmod
a+rw
/dev/tty7
stty
1200
>/dev/tty7
The
plotter's
switches are set
to
the following settings: A = 3, B = 3, C =
2,
and D = 3.
Arter
the
plotter
has
been
turned
on, drawing a 4010-style picture is as simple as:
$
cat
pict.ure >
/dev
/tty7
22
TEKTRONIX
December 1983
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