Digital Equipment LV8 User manual

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mama
LV8/LV12/LV11
printer/plotter
user’s
guide
laboratory
data
products

DEC-1
2-HLVAA-A-D
LV8/LV12/LV11
printer/plotter
user’s
guide
digital equipment corporation
-
magnard,
mossochusetts
_.._._._,

Copyright
©
1973
by
Digital
Equipment Corporation
The material
in
this manual is for information-
al
purposes
and
is
subject
to
change
without
notice.
The
technical information and halftones contained
in
Chapter
2,
Installation,
are
reprinted
courtesy
of
Versatec, Inc.,
Cupertino,
California.
The
following
are trademarks
of
Digital
Equipment
Corporation,
Maynard,
Massachusetts:
DEC
PDP
FLIP CHIP
FOCAL
DIGITAL
COMPUTER
LAB
UNIBUS
First
Edition,
January
1973
2nd
Printing, August
1973

CHAPTER
1
1.1
1.2
1.3
1.3.1
1.3.2-
1.3.3
1.3.4
1.4
1.5
CHAPTER
2
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.4.1
2.2.4.2
2.3
CHAPTER 3
3.1
3.1.1
3.1.2
3.1.3
3.2
3.3
3.4
3.5
3.6
3.6.1
3.6.2
3.6.3
3.7
3.7.1
3.7.2
3.7.3
CONTENTS
Page
INTRODUCTION
Scope
............................................
1-1
General
Description
.....................................
1-1
Functional
Description
....................................
1-2
Print
Mode .......................................
1-2
Plot Mode
.......................................
1-2
LV8
Interface
.....................................
1-3
LV11 Interface
.....................................
1-3
LVOl
Specifications
.....................................
1-3
Reference Documents
....................................
1-4
INSTALLATION
Unpacking
Instructions
...................................
2—1
Removing
LVOl Unit from
Shipping
Container
....................
2-1
Inspecting
LVOl
Unit for
Shipping Damage
......................
2-1
Opening
the Mechanical
Module
............................
2-2
Operating Supplies
...................................
2-4
Cabling Requirements
....................................
24
Power
Cable
......................................
2-4
LVOl to
Interface
Controller
.............................
2-4
LV11,
LV8
Interface
Controller
Module
Mounting
..................
2-4
Jumper
Configurations
.................................
2-5
LV11
(M7258) Jumpers
.............................
2-5
LV8
(M8302)
Jumpers
..............................
2-6
Packing
LVOl
for
Shipment
.................................
2-6
OPERATION
AND
PROGRAMMING
Operating
Instructions
....................................
3-1
Loading
Roll-Type
Electrographic
Paper
........................
3-1
Loading
Fanfold
Type Electrographic Paper
......................
3-4
Loading
with Toner
..................................
3-10
Operator
Controls
and Indicators
..............................
3-11
LVOl
Printer ASCII Character Set
..............................
3-12
Format
Control
Codes
....................................
3-13
Programming
Considerations .................................
3-14
PDP-ll
Programming
....................................
3-14
Control
and Status
Register
(LVCS)
..........................
3-15
Data
Buffer
Register
(LVDB)
.............................
3-16
Interrupts
.......................................
3-16
PDP-8/PDP-12
Programming
.................................
3-16
IOT
Instructions
....................................
3-16
Status
Register
.....................................
3-17
Programming
Considerations ..............................
3-18
iii

CHAPTER
4
4.1
4.1.1
4.1.2
4.2
4.2.1
4.2.1.1
4.2.1.2
4.2.2
4.2.3
4.2.4
4.3
4.3.1
4.3.2
4.3.3
4.3.4
CHAPTER
5
5.1
5.2
Figure
No.
1-1
2-1
2-2
2{3
244
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
CONTENTS
(Cont)
Page
PRINCIPLES OF OPERATION
LVOl
Printer/Plotter
..................................... 4-1
General
Operation
...................................
4-1
Electrostatic
Writing
Technique
............................
4-2
LVll Detailed
Description
..................................
4-2
Address
Selection
Logic
................................
4-2
Address
Inputs
..................................
4-3
Outputs
.....................................
4-5
Interrupt
Control
...................................
4-6
Data
Register Logic
..................................
4-7
Printer
Control
Logic
.................................
4-7
LV8
Detailed
Description
..................................
4-9
IOT
Decoding
.....................................
4-10
Printer
Control .....................................
4-11
Data
Register
......................................
4-12
Interrupt
and
Skip
Control ...............................
4-12
MAINTENANCE
Inspection
..........................................
5-1
Diagnostics
..........................................
5-1
ILLUSTRATIONS
Title
Page
LVOl
Functional Block
Diagram
...............................
1-2
Damage
Inspection
......................................
2-1
Back Panel
Removed .....................................
2-2
Platen Raised
View ......................................
2-3
Removing
Packing
Material .................................
2-3
Paper
Removal
........................................
3-2
Inserting
Cross
in Roll
Paper
.................................
3-2
Inserting
Roll
Paper
.....................................
33
Paper
Pulled Out .......................................
3-3
Paper
Transport
Module ...................................
3-4
Control
Panel
........................................
3-4
Fanfold
Paper
Guide
.....................................
3-5
Paper
Stacking
Insert
.....................................
3-5
Paper
Supply
Compartment
.................................
3-5
‘Fan’
the
Paper
to
Loosen
the
Sheets
............................
3-7
Position
of Stack
for
Fanfold
Operation
...........................
3-8
Loading
Paper
over
the
Paper
Guide
Assembly
........................
3-8
Positioning
the
Paper
Left-to-Right
on the
Paper
Roller
...................
3-9
Paper
Loaded
and
Top
Casting
Closed
............................
3-9
Location
of
Paper
Receiver Basket ..............................
3—9
Inserting
Tubes
in
Toner
Bottle
...............................
3-10
Toner and
Concentrate
Bottles Installed
...........................
3-10
Control
and
Status
Register
Bit
Assignments
.........................
3-15
iv

"“‘v
a-wnmv
m'"\w
"v u”,
Figure
No.
3-19
4—1
4—2
4.3
4.4
45
4—6
4.7
4—8
4—9
4—10
Table No.
2-1
3-1
3-2
3-3
3-4
3-5
4—1
4-2
ILLUSTRATIONS
(Cont)
Title
Page
Data
Buffer
Register
.....................................
3-16
LVOl Interface
Signals
....................................
4-1
LVll
Functional Block
Diagram
...............................
4-3
Address
Selection
Logic, Simplified Diagram
........................
4-4
Controller
Select
Address
Format
..............................
4-4
Interrupt
Control
Logic, Simplified
Block
Diagram
.....................
4-6
LVll Character
Transfer,
Timing
Diagram
..........................
4-8
FF
and
LF
Timing
Diagrams
.................................
4-9
Remote
Control
Timing Diagram
..............................
4-10
Plot
Mode
Timing Diagram
..................................
4-10
LV8
Functional
Block
Diagram
...............................
4-11
TABLES
Title
Page
M7258
Jumpers
.......................................
2-5
LVOl Controls and
Indicators ................................
3-11
LVOl ASCII Codes
......................................
3-12
Format Control
Codes ....................................
3-13
IOT
Programming
Instructions ................................
3-17
Status
Register
Bit
Assignments
...............................
3-17
Select
Lines .........................................
4-5
Gating
Control
Signals
....................................
4-5
v

CHAPTER
1
INTRODUCTION
1.1
SCOPE
This
guide
contains
operating,
installation,
programming,
and
technical
reference
data
on the
LV8/LV12/LV11
Printer/Plotter
System.
The
printer/plotter
system
consists of two
components:
an LVOl
Line
Printer/Plotter
(manufactured
by
Versatec,
Inc.)
and a
Digital
Equipment
Corporation
(DEC)
computer
interface
unit.
The
interface
unit
designations
for use with each
DEC
computer
are
listed
below.
Interface Used
with DEC
Computer
LV8
PDP-8/E,
PDP-8
/
M
LV12
PDP-12, PDP-8/I,
PDP-8/L
(positive
bus
only)
LVll
PDP-ll
For
example,
the LV11
system
consists of an LVOl
Printer/Plotter
and an
LVll
Interface Controller
for
use with
a
PDP-ll
computer.
This
guide
and the Versatec maintenance manual
must be used
together
for
a
complete
understanding
of the
printer/plotter
system.
The
prime
subject
of
this
guide
is
the
LV8, LV12,
and LVll
Controller.
The
prime
subject
of
the
Versatec
maintenance
manual is the
printer/plotter
itself;
the manual
presents
a detailed discussion
of the
print
and
plot
mechanisms,
including
installation,
operation,
maintenance,
troubleshooting,
and
engineering
drawings.
Paragraph
1.5 lists
all reference documents
related to
the
printer/ plotter
system.
1.2
GENERAL
DESCRIPTION
The
LVOl
Printer/Plotter
is a
hard
copy
device manufactured
by
Versatec, Inc.,
Cupertino,
California,
to an
exacting
set
of
DEC
specifications.
Its
speed, compact
size,
and
quietness
of
operation
make it ideal
for use
in
hospitals,
research
laboratories,
and offices.
The line
printer
has 132
columns,
a 96
ASCII
character
set,
and
prints
at
a
speed
of
up
to
500 lines
per
minute
(full
line).
The
plotter speed
is
120 lines
per
second
maximum,
with
a
data
transfer
rate
of
500K
bytes
per
second
maximum.
Printing
is
accomplished
by
depositing
an electrostatic
charge
on a
dielectric surface
and
blackening
the
charged
areas
with
fine
particles deposited
from a
liquid
toner.
The
paper
is then dried
by
directing
air
flow
over
the
paper.
The LVOl is
available in two models.
The
115V
model,
designated
LVOl-BA,
handles
104—132
Vac at
50
or 60 Hz.
The 240V
model,
designated
LVOl-BB,
handles 208—264
Vac
at 50 or 60 Hz.
1-1

Interfaces
between
the
LVOl
and most
DEC
computers
are
available. The
interface between the
LVOl and
a
PDP-8/E
or
PDP-8/M
is
designated
LV8;
the
interface between the
LVOl and a
PDP-12 is
designated
LV12;
the
interface between the LVOl and a
PDP-ll
is
designated
LV11.
The LV8 and
LVll
interfaces
are
described
in
this
manual;
LV12
operation
is identical
to
the LV8
interface
operation.
1.3
FUNCTIONAL
DESCRIPTION
(Figure
1-1)
1.3.1
Print
Mode
In
the
print
mode
of
operation,
the LVOl
accepts,
in
parallel,
7-bit ASCII
input
code from
the
LV8, LV12,
or LVll
Controller.
Each character
received
is
stored
in
a l32-character
memory
(buffer).
These
132
characters
represent
one
full
line of data
on 11-inch wide
paper.
Once the
132-character
memory
is
full,
the LVOl
automatically
prints
the
132
characters
on
a
line and then
performs
an automatic
carriage
return.
If
less than
a
full
line is
received,
certain
format control codes
(described
in
Table
3-3)
must
be
transmitted
to the LVOl
to
initiate
printing
of that line.
CONTROL,STATUS
PDP-
8/E
OMNIBUS
LV8
mfg/PER
/
PROCESSOR
'
INTERFACE DATA
PLOTTER
CONTROL,STATUS
PUP-12
0R
POS.
r/o BUS
LV12
LVO‘
PDP-8/I
,NTERFACE
DATA
PRINTER/
PROCESSOR
PLOTTER
CONTROL,STATUS
POP—11
UNIBUS
LV11
mfg/19%,
PROCESSOR
INTERFACE DATA
PLOTTER
(SP-0413
Figure
1-1 LVOl
Functional
Block
Diagram
When
printing
is to
occur,
each ASCII character
must
be
decoded
and translated
in
the
form
of horizontal and
vertical
dots that can
produce
a
recognizable image
on the
paper
surface.
Each character
is
composed
of
dots
within
a 7 X 9
matrix;
a total of 63 bits of
binary
information
are
associated with
each character.
Read-only
memories
(ROMS)
are
used to store
this information until needed
by
the
printer.
These
bits
are
sequentially
applied
to the
writing
points
to
produce
the desired
pattern.
When a black dot
is
required,
a
charge
is
placed
on the
paper;
when
no
dot is
required,
no
charge
is
applied
to the
paper.
This
process,
which
is
also
known as the raster
scan method
of
writing,
is
similar
to the
writing
technique
used
in
television and
on
television-like terminals.
1.3.2 Plot
Mode
When the
plot
mode
of
operation
is
selected,
the
LVOl
accepts,
in
parallel,
8-bit data
bytes.
This
binary
information
is
stored
in
a
1024-bit
buffer which
represents
a full
scan
line on ll-inch
paper.
The
line is
automatically printed
when
the
last
byte (128th)
is received. The character
generator
used
in the
print
mode is disabled
and the
unweighted
binary
information
is transferred
directly
to the
writing
surface.
Input
bit 08
prints
as
the left-most
writing point
in the
current
byte
when
viewing
the
resultant
printout.
As
an
example, input
bit 08
would
print
as the
first dot on a scan
line
if set in the
first
byte
of data transmitted.
Because
of
the
electrostatic
method
of
writing,
data must
be
presented
to
the
plotter
in the
form of a
bit
map
of the
desired
graphical
information.
This
can be
accomplished
with
a
basic
software
package
which
translates
simple
commands into the
required
binary
data. Unlike
pen plotters,
speed
is not
dependent
on the
complexity
of
the
image
to
be
produced.
For
example,
the
LVOl
could
produce
an
8-1/
2
inch
long
X 11
inch
wide
graph
or chart
in 10
seconds,
regardless
of
complexity.
This
opens
a
new
dimension
in the
use of
plotting
with
computers,
since
pen
plotters
have
always
had a severe
limitation
on
speed
due
to
the
necessity
of
writing
every
line
with a
single
writing
pen.

The
ability
to
produce shading
or
complex
minute
patterns
in a
plot
is
a
feature of the LV01. The
writing
points
are
spaced
at 0.010
inch
intervals and allow the accurate
reproduction
of minute details.
Plotting
applications
that can be
accommodated
on
fanfold
paper
are easier to
store,
handle,
and
preserve
for future
reference. For
this
reason,
the
ASCII
functions of Form
Feed
(FF)
and End-of-Transmission
(EOT)
are
made
available to the
user.
They
are
accomplished
by
pulsing
the remote control
line
associated with that
function. These
two
functions allow
formatting
of the
graphics
so
printing
can
begin
at the
top
of
a
page
and the
finished
graph
can
be
ejected
into the
viewing
area
for
examination
and/
or removal.
1.3.3
LV8
Interface
The
LV8 Interface
Controller transfers
data
from the
PDP-8/E
AC
(via
the
DATA lines
on
the
OMNIBUS)
to the
LV01 under
program
control. In the
plot
mode,
data is transferred
in
8-bit
bytes
using
AC
bits 04
through
11. The
most
significant digit
is
bit AC
04,
which
prints
at the
left-most
writing
point
of
the
data
byte
when
viewing
the
c0py.
For
the
print
mode,
data
is
transferred
in 7-bit
characters
using
AC bits 05
through
11. AC bit
11 is bit 01
of
the
ASCII
character.
In
addition,
the
LV8
monitors
all line
printer
error conditions
and initiates
interrupt
requests
to
the PDP-8. All
of
the LV8
logic
is
contained on one module
designated
M8302.
This
interface module
is
discussed
in detail
in
Chapter
4
of
this
guide.
NOTE
The
interface
controller
for
the
PDP-12
and
PDP-8/I
(positive
I/O
bus
only)
is
designated
LV12
and
operates
similarly
to
the
LV8.
1.3.4 LV11
Interface
The LV11 Interface
Controller
provides
interface
logic
between
the LV01 and
a
PDP-ll
processor.
The
PDP-ll
transfers data
utilizing
byte
instructions
to
the
low
order
byte
of a PDP-ll word
(bits
07
through 00).
For the
print
mode,
7-bit ASCII characters
(the
eighth
bit,
bit
07,
is
ignored)
are
transferred
to the
LV11
via the
Unibus.
The
plot
mode utilizes all
eight
bits
of the low order
PDP-ll word. The
LV11,
in
turn,
transfers the
characters to
the
line
printer/ plotter
while
maintaining program
status information and
generating
program
interrupts.
'
All
logic
for the LV11
is
implemented
on
one
M7258
quad
integrated
circuit module. This interface
module is
discussed
in
detail
in
Chapter
4
of this
guide.
1.4 LV01
SPECIFICATIONS
Physical
Width
19 in.
(0.48m)
Height
38
in.
(0.96m)
Depth
18 in.
(0.46m)
Weight
160 lb.
(72
kg)
Electrical
LV01-BA
104—132
Vac,
47—63
Hz,
single-phase
LV01-BB
208—264
Vac,
47—63
Hz,
single-phase
Power/
Heat
Dissipation
600W/
2000
Btu/hr

Environmental
Operating Temperature
50°
to 110°F
(10°
to
45°C)
Relative
Humidity
20%
to
80%
(non-condensing)
Operational
Paper
Drive
Incremental
Paper
Drive Increment
0.010 in.
Paper
Advance
Speed
1.20
in./
second
Writing
Spot
Size
0.0075 in.
diameter
Paper
Width
11
in.
Plotter
Plotting
Area
10.24
in.
Total
Writing
Points
1024
Writing
Point
Spacing
0.010 in. center to center
Input
8-bit
bytes/
parallel
Data Transfer Rate
500K
bytes/
second maximum
Plotting Speed
120
lines/
second
maximum
Memory
One line
buffer
(1024 bits)
Printer
Columns 132
Character
Spacing
12.5 in.
Line
Spacing
7.6
in.
Character Font 7 X 9 dot
matrix
Character
Generator
Read-only
memory
(ROM)
Speed
5001ines/minute
printing
132
columns/line
Input
Code 7-bit
ASCII,
USASX3.4-1968,
parallel
no
parity
Character
Set
96
(95
printing
characters and
a
space)
Memory
One
line buffer
(132
characters)
1.5 REFERENCE
DOCUMENTS
The
following
documents
supplement
the information contained
in this
guide:
PDP-8/E
and
PDP-8/M
Small
Computer
Handbook,
DEC.,
1972
PDP-8/I
Maintenance
Manual,
Volume
1,
DEC-SI-HRIA-D
PDP-8/E, PDP-8/F
and
PDP-8/
M
Maintenance
Manual,
Volume
1,
DEC-8E-HR1B-D
PDP-ll
Peripherals
and
Interfacing
Handbook
PDP-l
1/
20,
PDP-l
1/40,
PDP-11/45
Handbooks
PDP-12 Maintenance
Manual,
Volume
1,
DEC-12-HRlB-D
Versatec,
Inc.
Maintenance
Manual
for
1100A
DEC
Printer/Plotter,
document
number
M-llOOA-DEC-Ol
l4

CHAPTER
2
INSTALLATION
2.1
UNPACKING INSTRUCTIONS
2.1.1
Removing
LV01
Unit
from
Shipping
Container
The LV01 is
shipped
in a
shock-resistant
wooden
box. Lift
the
entire
top portion
of the box
off
of the base
(after
the
restraining
straps
have been
removed).
Next
unstrap
the LV01
unit
and
lift
it
off the
base.
2.1.2
Inspecting
LV01 Unit for
Shipping
Damage
A
complete
inspection
should
be made for
any
shipping
damage.
A
typical
sign
of
a
damaged
machine could
appear
as
cabinet
distortion.
The
top
casting
(Figure
2-1)
should
be
opened
and closed
carefully
to
ensure that it has
not
been
damaged,
distorted,
or
misaligned during
shipment.
Check
the
casters
and
observe that the unit
rolls
about
freely.
TOP
CASTING
PLATEN
_.-
41""
Figure
2-1
Damage
Inspection
2-1

The front
panel
is
hinged
on
the left side
and held in
place
by
a
magnetic
catch on
the
right
side.
Pull
at
the
upper
right
corner
to
open
this
panel.
The
side
panels
are held in
place
by
two
snaps
at
the
top.
To
remove
the
panel,
pull
out
on
the
top
of
the
panel,
then
lower
the
panel
to remove
it.
The
back
panel
is
taken
off
by
loosening
(1/2
turn
to
the
left)
the two
fasteners
at
the
top.
After
the
rear
panel
is
removed,
a visual
inspection
should
be made
to
determine
if
any
of
the
electrical
components
have
become loose
during
shipment
(Figure
'2-2).
Figure
2-2
Back
Panel
Removed
2.1.3
Opening
the
Mechanical Module
Open
the
top
casting
as
far
as it will
go.
In the raised
position,
it is held
open
by
its
own
weight.
Raise
the
black
handle
(Figure
2-3)
which
releases
the
platen
module.
Raise the
platen
until
it is
held
open
by
its own
weight.
Remove the
protective
packing
material
that
has been
placed
over the
writing
head
and toner
channel
(Figure
2-4).
The metal
“spool-cross”
is
normally
taped
in
place
in the
“L”
shaped
brackets.
This can be freed
by
removing
any
tape
that
was
used
to
secure it
during
shipping.
Inspect
for
possible
damage
to the
back-up
electrodes
(double segmented
bar)
and
paper
drive
roller located
at
the
top
of
the
module.
The
writing
head is located
between
the
paper
supply
compartment
and
the
toner
applicator
channel.
A
light attempt
to
move
the
writing
head should
determine
if it
has
loosened
during
shipment.
If it
has
loosened,
re-alignment
of the
writing
head
is
necessary.
This
procedure
is
described
in
the
preventive
maintenance
chapter
of
theVersatec
maintenance
manual.

Figure
2-4
Removing
Packing
Material
2-3

2.1.4
Operating
Supplies
The
following
items are
included with each LV01
unit:
One
(1) LV8/LV12/LV11
User’s Guide
(DEC
no.
DEC-12-HLVAA-A-D)
One
(1)
two-gallon
bottle of Toner Pre-Mix
(DEC
no.
49—01099)
One
(1)
eight-ounce
bottle
of
Toner Concentrate
(DEC
no.
49-01100)
One
(1)
bottle of
clear
dispersant
for
cleaning
purposes
(DEC
no.
49—01
101)
One
(1)
carton of 1000
feet
continuous form fanfold
paper
(DEC
no.
36-11227—01)
Since
print
quality
depends
on the
type
and
characteristics
of
paper
and toner
used,
supplies
furnished
by
DEC
are
recommended
for
proper operation.
Performance
may
be
degraded
if
other
supplies
are
used
and
machine
performance
cannot
be
guaranteed.
2.2
CABLING
REQUIREMENTS
2.2.1 Power Cable
A
7.5-foot
power
cord is
permanently
attached to the LV01 at the rear of the machine
adjacent
to
the
fuse holder.
The
cord
for
60
Hz
systems
terminates
in a
standard
3-wire, male,
wall-type plug
(NEMA
5-15P).
The cord for 50
Hz
systems
has 3
15A,
250V male
plug
(NEMA
6-15P).
CAUTION
LV01
power requirements
are
104—132
Vac,
3A,
47—63
Hz
or 208—264
Vac,
47—63
Hz,
600W maximum.
Prolonged
operation
above
or below
rated
voltages
may
cause
equipment
failure
and
void
the
warranty.
A
3-wire
(hot,
neutral,
ground)
receptacle
must
be available
for
proper power
application.
If a
proper
3-wire
receptacle
is
not
available,
a
separate
wire
must
be connected
from
the LV01
chassis
to “earth
groun
”.
WARNING
Do
not work on
the LV01 unit without
disconnecting
main
power
to the machine.
Make
sure
that the
safety
screen
over
the
power
supply
section
at
the
rear
of
machine
is
always
installed.
Dangerous
voltages
of
approximately
1000V are
present
in this section
during
operation.
2.2.2
LV01
to Interface
Controller
The interface
cable between
the
LV01
and
the
respective
LVll
or
LV8
interface
is
shown
on
DEC
drawing
D-IA-7009133—0-0.
The LV01
connects
to a Cannon DCC-37P
located
at
the lower left corner
on the rear of
the
LV01.
The cable
terminates
at the interface
in
a
Berg
connector
(DEC
no.
12-09941).
2.2.3
LVl
1,
LV8
Interface
Controller
Module
Mounting
The M7258 module
(LVll)
is
mounted
in
either a
DDll-A
mounting
unit
or one
of the slots of
the
processor
mounting
box.
Refer to
the
PDP-I
1
Peripherals
and
Interfacing
Handbook
for
detailed
information
on
mounting
and
Unibus
connections.
24

The
M8302
module
(LV8)
should
be mounted
in
accordance
with the recommended
order of
PDP-8/E
module
installation
as listed
in Table
2-3
of the
PDP—8/E,
PDP—8/F
and
PDP-8/M
Maintenance
Manual,
Volume 1.
2.2.4
Jumper
Configurations
2.2.4.1
LV11
(M7258)
Jumpers
—
Table
2-1 lists the
required
M7258
jumpers
and their function.
Table
2-1
M7258
Jumpers
Jumper Purpose
Function
A4, A5,
A7
Address
Selection
Jumpers
A3
through
A12 are used to
select the bus address to
which
the
M7258
module
will
respond.
The
assigned
address,
77751x,
is
selected
by removing
all
“A”
jumpers except
A4,
A5,
and A7.
J14 Address
Selection
Jumpers
J12,
J
13,
and J 14 are used
to further define
the
bus
address
for
the
LV11.
The LV11 is
normally
configured
with J14
installed.
This causes
the address
logic
to assert
BUS SSYN L when either
address 777514 or
777516 is decoded.
V7
Vector Address
The
LV11
uses the vector
block
at
address 200.
Removing
all “V”
jumpers
except
V7 will
produce
this
interrupt
vector address.
Nl NPR
latency
This
jumper
is
normally
installed to
improve
bus
latency
on
NPR
devices.
New
systems
on the
PDP-11/15
and
PDP-11/20
are
shipped
with
a
KHll
option
which allows use of
the N1
jumper.
If the LV11
is
an
add-on
option
to a
PDP-l
1/15/20,
verification that the KHll
has
been
installed must be made or
the
system
may
malfunction.
If
the KHll
has not been
installed,
removal of
the
N1
jumper
will
disable
this
circuitry
on
the M7258.
The M7258 module
was
designed
as a
multipurpose
interface/controller.
Jumpers
J1
through
J 11 are used
to
accommodate
differing signal polarities
and control
features of
these various devices.
A
general
discussion
of the
jumpers
as
they
apply
to
the LV11 follows.
J1
Miscellaneous
Jumpers
J l and 12
provide
conversion
of
lower case ASCII codes
to
the
corresponding upper
case
character
before
loading
the
LVDB.
With J1
installed,
ASCII bit
6 is
passed
unaltered from the bus
receivers to
the
data
register.
13,
J5
These
jumpers
allow
connection
of the
P
DATA
8 H
signal
to ASCII
bit
6,
thus
allowing
the P
DATA
8 H
signal
to
be
used as
a
control
line.
Jumpers
J3 and
J5
are installed on
the LV11
and
pass
the data
unaltered
from
the LVDB to the LVOl.
2-5

Table
2-1
(Cont)
M7258
Jumpers
Jumper
Purpose
Function
J7
J9
JlO
Jumpers
J6
and
J7
select the
proper
clock
polarity
for
the
clock
input
to
the
Done
flip-flop.
J7
is installed
for
the
LVll since
the
Ready
line from
the
LVOl is
low
(ground)
when
true.
Thus,
the
high-to-low
transition
of the
Ready
line is
inverted and
applied
to
the
clock
input
as
a
positive
transition
clocking
the
Done
flip-flop.
Jumpers
J8 and J9
select
the
correct Strobe
polarity
for the
LVOl.
The LVOl
requires
a
positive
pulse
for a strobe
signal
so
jumper
J9 is
installed
for LVll
operation.
Jumper
J
10
is
normally
installed to
allow
the remote
functions of
BUF
CLR,
REM
EOT,
REM
FF,
LINE
TERM,
and
MODE. These
remote functions
facilitate
formatting
and data
output
when
the
LVll
is
used
in the
plot
mode.
Jumper
J11
installed
will
disable
these
functions.
2.2.4.2
LV8
(M8302)
Jumpers
—
The
only
jumpers required
on
the
LV8 M8302
module are
the
address decoders
that
allow the
6657
instruction
to be utilized.
The
following
jumpers
are
required
on
the
M8302 for
LV8
operation:
W1,
W3,
W5,
W7,
W11,
W12,
and W14.
2.3
PACKING
LVOl
FOR
SHIPMENT
Never
ship
the LVOl unit
with toner
and
concentrate
installed;
ensure that critical items
are
secured
before
packing,
otherwise
damage
may
result.
1.
10.
Open
front
door and unscrew
toner hose
cap
from
the
bottle. Remove
concentrate
bottle hose
after
allowing
the
hose
to drain
in
toner bottle.
Wrap paper
towels around
all
of
the
tubes
and
cap
and
tape
securely
to
prevent
leakage.
Discard unused
portion
of toner
and
concentrate. Do not
attempt
to reseal
bottles
since
leakage
and
damage
may
occur
during shipment.
Raise
machine
top
cover and mechanical
module
top.
Remove
roll
type
paper
and
tape
empty
“spool-cross”
to its holder.
If
fanfold
paper
is
being
used,
remove
paper
guide
and
paper
stacking
insert
from
the machine.
Remove
paper
tray
on
rear
of machine.
Package
these
parts
separately.
Fold
paper
towels
to fit in toner
applicator
channel
and insert
with
light
pressure.
There
are three
sections,
and
each will
hold at
least
one
paper
towel.
Using
clear
dispersant,
wipe
any
dirt and toner from
mechanical
module,
side,
back
panels,
and door.
Close
mechanical
module
top
and lock.
Wrap
AC
input
cord and
place
inside the machine.
Strap
machine
in
original
container for
shipment.
2-6

CHAPTER
3
OPERATION
AND
PROGRAMMING
This
chapter
describes the
loading
procedures
for
both roll and fanfold
paper
and
the
toner,
the LVOl
operating
controls,
the
ASCII character
set,
the
format
control
codes,
and
presents
PDP-ll and PDP-8
programming
information
relative to the
LVOl.
3.1
OPERATING
INSTRUCTIONS
This
section describes the
procedures
for
loading
paper
and toner and
preparing
the machine
for
operation.
3.1.1
Loading
Roll-Type
Electrographic Paper
To load roll
paper,
follow the
instructions listed
below.
1.
2.
Remove
paper
roll from
moisture
resistant
bag
(Figure 3-1).
Insert
“spool-cross”
into
paper
core
(Figure 3-2).
Position
spool-cross
in the
spool
holder
which consists
of
the
two
“L”-shaped
brackets
on
each
side of
the
paper supply compartment
(Figure 3-3).
NOTE
The
spring-loaded edge
guide
(a
button
on
the
right
side)
must
be held
“in”
by
the
paper
when
properly
loaded.
The
spool-cross
should
sit
squarely
in the
holder.
Paper
should come off
the
top
of
the
roll
(Figure 34).
Since
the
paper
has a dielectric
coating
on one
side
only,
it
must be mounted
correctly,
as
shown.
No
writing
will
occur
if
paper
is mounted
up-side
down
(coming
off
the
bottom of the
roll).
Pull
the
paper
forward
off of
the
roll
approximately
2 feet. It should
pull
easily
if the
spool-cross
has
been
installed
correctly.
With
the
platen
module about
3/4
closed,
run the
paper
back over
the
paper
drive
roller onto the
platen
(ensure
that
paper
is centered left
to
right
on the
roller)
then close the
platen
(Figure
3-5).
Lock the
platen
module in
place
with the black
handle
on
the
left side.
After
the
platen
has
been
lowered
into
place
and
locked,
lift
the
paper
and
pull
up.
At
this
point
the
paper
is
resting
against
the
paper
tear
bar.
With
a
twisting
motion,
paper
can
be
torn off
evenly
against
this tear
bar.
Check the
position
of
the
ROLL/FAN
FOLD switch.
It
should
be in the
ROLL
position.
This
switch
is
located
on the
right
side
of the
frame after
opening
the
front
panel
(Figure 3-6).
3-1

Figure
3-1
Paper
Removal
Figure
3-2
‘
.
...¢...,..,_ ,m -. ..
.
.
Mum...» u-
a
Cross
must
fit
squarely
in
the
bracket
Inserting
Cross
in Roll
Paper
”L“
shaped
bracket