Helwett Packard 82143A User guide

HEWLETT-PACKARD
82143A
PRINTER
OWNER'S HANDBOOK

"The success and prosperity of our company will be assured only if we
offerourcustomers superiorproducts thatfill real needs and provide lasting
value, and that are supported by a wide variety of useful services, both
before and after sale."
Statement of Corporate Objectives
Hewlett-Packard
When Messrs. Hewlett and Packard founded our company
in 1939, we
offered one superiorproduct,
an audiooscillator. Today, we offerover3500
quality products,designed and built for some ofthe world's most discerning
customers.
Since we introduced our first scientific calculator
in 1967, we've sold
millions worldwide, both pocket and desktop models.Theirowners include
Nobel laureates, astronauts, mountain climbers, businessmen, doctors,
students, and homemakers .
Each of our calculators is precision crafted and designed to solve the
problems its owner can expect to encounter throughout a working lifetime.
HP calculators fill real needs. And they provide lasting value.

F /I OW HEWLETT
~ ~ PACKARD
HP82143A
Printer Owner'sHandbook
November 1979
82143-90001 , Rev. B 11 /79
Printed in U.S.A.
<0 Hewlett-Packard Company 1979

Contents
Section I: Using the HP 82143A Printer ....... . ........ .. ... ... 5
Printer Controls .. . ...... ....... . . ...... . . .. .... ... .. .... . .... 5
AC Adapter/Recharger and
Rechargeable Battery Pack
... .. .. ... . ..... .. . ... . .. ... . .... 7
AC Line Operation . . . .. . . . . .. . . . . ... 7
Battery Operation
......... .. .. . .. .. .. .. . ...... . ..... . .... 7
Battery Pack Replacement ..
..... ....... . .. .... .. . . ........ 8
Connecting the
AC Adapter/Recharger .. .. . ...... . . . .. . . .... 9
Plugging the Printer Into the HP-41C
....... . ..... .. .... .. ..... 10
Remov
ing the Printer From the HP-41 C ....... .. . .. . . . .... . . 11
Loading Paper Into the HP 82143A Printer .... . . ... . . . .12
Section 2: Printer Operations ...... .... ......... ... ... . .. . .... 15
Standard HP-41C Printer Operations
..... .. ... ............ .... 16
View Register Contents
..... .. . ....... . . . .. . . .. . .. . . . ... .. 16
ALPHA View
....... ..... . . . .. ... .. . . .. ... . ... . . . . .. . .... 16
Prompting . . .. . . . . .. . . .. . .. . .. . . . .. . . . . .. . . .
.. . .... 17
Paper
Ad vance ... .. . .. . . .. ... ... . .. .. . .. . ... .. .... . . . . .. 17
HP 82143A Printer Functions.... . .... . .. . ... .. . . . . . .18
The I
PRINT I Key... . . . .. . .. . . . . .. . . . . .. . . . .. . . . . . . . .18
Print X-Register. . . . . . .. . . . .. . . . . .. . . . . .. . . . . .. .
.1 8
Print
ALPHA-Register...... .. . . .19
Printing Registers . . . . .. . . . .. . . . . . .. . . . .. . . . .. . . .19
Using
IPRREGI ..... . • . . . .•... ..•. . . . . . • .... • . ... 19
Using
IPRREGX I . . • • . . . . • • • . . . • • . . . . . . . • . .. . 20
Using I PR E I ...... . ...... . •... .. •. ..•.. ... .... 21
Using IPRSTKI ..... .. •. . ... . •.. .. . ... . 22
Printing Programs . . . .. .. . .. . . . . .22
Using
[PAP] . . .. . . . . . . .. 22
Using ILIST I ......... . .. 23
Printing Status and Key Assignment Information .. ..... . . .... 24
Using IPRFLAGs l . . .......... . ..... ....... . .. . .• • . . . • . .. .24
Using I
PRKEYS I ... . .. .... ... . ..... ..... .... ..... .. ..... 25
Printing the Catalogs .. . .. . . ........ . .. . . .. ... . .... .. . .. .. 26
Programming and the Printer
............... . .. ..... .. . .. ..... 26
Using the Printer During Program Entry .
... ..... . .. . .. . ... .. 26
Printer Operation During a Running Program ..... .. .... . ... . 26
2

Executing Programs Containing Print Functions
With No Printer Present
...... . . .. ... ... . . .
Flags
and the Printer ..................... . . .... . . .. .
.... 27
. .... 28
Section 3: Accumulated Printer Output .... . . .... ..... .. ... .. .33
Accumulating ALPHA Characters Into the Print Buffer
........... 33
Accumulating Numbers in the X-Register Into the Print Buffer .... 35
Character-By-Character Accumulations . . ...... . . . . ... .36
Printing the Contents of the Print Buffer
......... . . .... 38
Accumulating Formatted a
nd Unformatted Numbers ..... ... . .... 41
Skipping Characters in the Print Buffer ........... . . ... . .... 41
Accumulating Lower-Case and Double-Wide Settings . .......... 43
Programming With the Accumulating Functions. . . . .
... . ..... 45
Section 4: Plotting . . . . . . .... 47
Interactive Plotting of Functions. . . . . .
.. . . .. . .. . . . . .. .. . .47
Programmable Plotting
...... ... .. . . . . .. ... .. . . . . .... .... 56
Plotting a Y-Axis .. . .. . ..... .. . .. . ..... ...... ... .... ... . . .... 56
Single-Line Plotting. . . . .. . . . . .. ... .. .... .... . .. ... 58
Plotting With Special Characters .. . . ... .. . ..... . ....... 59
Section 5: Graphics . . . . . . . .. . . . . . . .. . . . . . 61
Specifying a Column of Dots . . . . . . . . . . . . . . . . . . . . . . 61
Accumulating Columns ... . . .. . . . . . .. . . . . .62
Skipping Columns. . . . . . . . . . . . . . .
63
Building Special Characters ... . ....... ... .... . .... 64
Right- and Left-Justified Buffer Printing . .. . . .. .. .. 66
Programming the Special Character Operations
........ 67
Special Plotting Characters. . . . . . . . .. . . . . .. . . . .
... ..... 67
Appendix A: Accessories Maintenance and Service ...... . .. .. .68
Accessories .
..................... ................... .. ... . . 68
Maintenance ..... . . .. . .. . . . .
... . .. . . .. . . .. 68
Service
... . .... . ...... . . .. ... . . . .. .. ..... ... . .. . .. 70
Programming
and Applications .. . .. . . ..... . .... . ...... . .73
Further Information. . . .73
Appendix B: Messages and Errors
... 74
Appendix C: Annotated I PRPLOT I Program Listing . .. . .. . . .. . . .
76
Appendix D: Reading and Keying Programs
From Printer Listings . ............ . . . .. .. . . . .86
UP 82143A Printer Function Index .. .. .. . . . .. ..... .. . .. . ..... 88
3

Section 1
Using the HP 82143A Printer
The HP 82l43A Printer was designed specially for the HP-4lC calculator
system, adding powerful printing, plotting, graphics and special charac-
ter capability. When you plug the printer into one
of the ports on the
HP-4IC, an impressi'
ve set of printing functions becomes active.
This handbook takes you through the detailed operation
of each of the
functions as well as the general operation
of the printer. So that you can
become familiar with the capabilities
of the calculator/printer system,
you should read through this handbook.
Printer Controls
OFF~ON Switch. This switch controls the power to the printer.
In order for the printer to operate in the system, the power must be on.
Procedures for ac line operation and charging the batteries are given
later in this section.
TRACE
MAN_NORM Print Mode Switch. The printer has three modes of
operation, which are controlled by the position of this switch. This
switch controls what and how information
is printed.
• In the
MAN (manual) position, the printer is idle and does not
print unless you or a program executes a print function. Listings
of programs are printed left-justified when the printer is set to
MAN.
• In the NORM (normal) position, the printer prints numbers and
ALPHAs that are keyed in, function names as they are executed
from the keyboard, and output from print functions. Running
programs print only output from print functions and JPROY'TI out-
put. Listings
of programs are printed right-justified when the
printer
is set to NORM.
• In the TRACE position, the printer prints numbers and ALPHAs
that are keyed in, function names, intermediate and final answers,
and output from print functions. Program listings are printed in a
special " packed" or condensed form when the printer is in
TRACE. 5

6 Using the HP 82143A Printer
Above each example printer listing in this handbook, the position of the
print mode switch
is shown like this: Printer: MAN ~ . This lets
you know how you should set the print mode switch to obtain the printed
output shown in the example.
Print Intensity Switch. This is a five-position switch that controls the
intensity
of the characters being printed.
Print Key. When the HP-4IC is in normal mode (with no program
running), you can print the contents
of the X-register by simply pressing
IPRINT I . In ALPHA mode, when you press I PRINT I , the contents of the
ALPHA register are printed. Pressing IPRINTI while the HP-4IC is set to
PRGM mode inserts a I PRX I(print X) as a line in the program, or while
the
HP-4IC is also in ALPHA mode, inserts a ! PRA I(print ALPHA)
into the program.
Paper Advance Key. The paper advance key, I ADV I, on the printer is
used to advance the paper in the printer. When the HP-4IC is in normal
mode, pressing the paper advance key simply advances the paper one
line. Holding the key down produces multiple advances.
When the
HP-4IC is in PRGM mode and you are keying in a program, pressing the
paper advance key inserts an I
ADV I(advance) into the program. (If you
hold the paper advance key down for longer than a second, the I
AOV I is
not inserted into the program and the paper is immediately advanced.)
When the calculator executes the I
ADV I in the program, the paper is
advanced one line.
Power Light. This light is on when the power to the printer is turned on.
If the battery power is not sufficient to run the printer, the power light is
off.
Bat Light. The bat light tells you the status of the rechargeable batteries
in the printer.
When the bat light is on, battery power is low. This means
that the printer has about
10 to 15 minutes of power remaining. To con-
tinue operation you should immediately turn the printer OFF and insert a
fully charged battery pack or connect the AC adapter/recharger and
recharge the batteries for a few minutes before you resume printing.
CAUTION
Continued printing with the bat light on may damage the
rechargeable batteries.

Using the HP 82143A Printer 7
The AC Adapter/Recharger and Rechargeable
Battery Pack
The complete AC adapter/recharger and rechargea bl e battery pack are
impo
rt a nt parts of your printer system. The rechargeable battery pack
supplies the printer with sufficie
nt p ower for sustained po rt a bl e printing
for
4000 to 5000 printed lines. Wh en plugged in , the AC adapter/
recharger supplies operating p
owe r for the printer and recharges the
battery pack.
AC Line Operation
To operate the printer using the ac adapter/recharger, simply turn the
printer off, plug the ac adapter/recharger into the proper p
ower source
and then into the pri
nt er, and turn the p ri nt er on. It is normal for the
unders
id e of the p ri nt er and the ac adapter/recharger to be warm when
connected.
CAUTION
The battery pack must be in the printer while the AC adapter/
recharger is connected. Failure to do so could damage the
printer.
Battery Operation
Wh en not being used, the rechargea bl e ba tt e ri es have a self-discharge
rate of approximately one perce
nt of ava il a bl e charge per day. If yo u
have not used the printer for an extended p
er iod of time, connect the ac
adapter/recharger and charge the battery pack . The rechargea
bl e batte r-
i es ar e being charged while you operate the printer from the ac adapter/
recharger.
Th e ba tt ery pack will charge with the printer on or off .
Normal charging time from fully discharged battery pack to full charge is
(time depends on ac line vo
lt age value):
Printer
ON or OFF : 14 to 16 hours
Shorter charging pe
ri ods wi ll reduce the operating time you can expect
from a single battery charge. Wheth
er the printer is off or on, the bat-
tery pack is never in danger
of becoming overcharged.
Do nut attempt to incinerat
e, puncture or disassemble the battery pack-
it may burst or release toxic materials. Do not connect togeth er or oth er -

8 Using the HP 82143A Printer
wise short-circuit the battery pack terminals-the pack may melt or
cause serious burns.
Battery Pack Replacement
I. Turn the printer OFF and
disconnect the ac adapter /
recharger.
2. Slide the two battery door
latches inward.
3. Let the battery door and bat-
tery pack fall into your hand.
4. Insert the new battery pack so
that its contacts face the
printer and line up with the
connector springs.

Using the HP 82143A Printer 9
5. In sert the end of the battery
d
oor that is o ppo s ite the
latches behind the retaining
groove, and close the door.
6. Secure the door
by pressing it gently while sliding the two
battery door latches outward.
Connecting the AC Adapter/Recharger
I. Tum the printer and calculator
off .
2. Plug the
ac adapter into the proper power source.

10 Using the HP 82143A Printer
3. Plug the female re ch arger plug
into the back of the printer as
shown . Th e batteries will
charge and the printer can be
operated norma
ll y.
Plugging the Printer Into the HP-41C
I. Make sure the ca lc ul ator and
printer are turned of
f.
2. Remove the po rt ca p that is in
the
hi ghest number ed unu se d
port. If you
mu st remove a
memory mo
dul e, al ways
remove one from the highest
numb ered port. (If yo u re-
move a me
mor y mo dul e,
make sure the HP-41 C has
enough memory allocat
ed to
data sto r
age r eg ister s-
exec utin g I SIZE I 064 will
ensure this.)

Using the HP 82143A Printer 11
3. Insert the printer interface
module into the emp ty port as
shown. Push it into the calcu-
lator until
it snaps firmly into
place.
Your HP-41 C system
is now ready to useI
Removing the Printer From the HP-41C
I. Turn the HP-41 C and the
printer off!
2.
Pull the printer interface
module straight back until it
is free from the port. Do not
pull on the cord.
3. Replace the port cap on the empty port.

12 Using the HP 82143A Printer
Loading Paper Into the HP 82143A Printer
The HP 82143A Printer is a thermal printer and it requires a special
heat-sensitive paper. You should use only the Hewlett-Packard thermal
paper available in 80-foot rolls from your nearest HP distributor or sales
office or by mail from:
Hewlett-Packard
Corvallis Division
P.O.
Box 3499
Corvallis, Oregon 97330
CAUTION
To prevent damage to your HP 82143A Printer use only
Hewlett-Packard thermal paper.
To load paper into the printer:
I.
Tum the printer ON and open
the paper roll cover. Remove
the empty core from the paper
well.
2. Before inserting the new roll
of paper into the printer, dis-
card the first two turns to
ensure that
no glue, tape or
other foreign matter
is on the
paper. Ma ke sure that the
leading edge
of the paper is
straight, not crooked or jag-
ged. A short, sharp crease on
the leading edge may aid
in
the loading of the paper.

Using the HP 82143A Printer 13
3. Temporarily place the paper
roll in the paper roll cover.
With your finger, push the
leading edge
of paper into the
slot near the bottom
of the
paper well. Continue pushing
until the paper can be pushed
no
further into the print
mechanism.
4. Press the paper advance key
and hold it down until the
paper passes the top
of the
plastic tear bar.
5. Drop the roll
of paper into the
paper well, close the cover,
and press IPRINT I two or
three times. (If you ran out of
paper during the execution of
a program, press IRIS).) If
the paper is feeding properly
but no printing appears when
you print, the paper may
be
inserted backwards. The
paper is chemically treated
and will print on only
one
side.

Section 2
Printer Operations
Th e HP 8214 3A Printer is an easy to use but very ca pable addition to the
HP - 41 C. To use the print er all you do is follow the directions given in
section I for plu gg ing in the printer and then turn the printer on. Th e
system is instantly int
eg rated and r ea dy to use. This sec ti on and the
following three sections show you how to use the printer from
it s most
simple opera
ti ons to the more sp ec ia li zed appli ca ti ons in pl otting, special
character output and graphics.
To begin us
in g your n ew printer, pr ess the fo ll ow in g keys to print a li st
of a
ll of the functions in the printe r.
Keystrokes
•
ICATALOGI2
15
TRACE
Printer: _
-PRINTER -
HCR
ACCHR
ACCOL
HCSPEC
HCX
BLDSPEC
LIST
m
'PRAXiS
PRBUF
PRFLAGS
PRKEY S
PRP
'PRPLOT
'PRPLOTP
PRREG
PRREGX
m
PRSTK
PRX
REGPLOT
SKPCHR
SKPCOL
S TKPLOT
CRT 2

16 Printer Operations
All of these functions can be executed or assigned to keys for execution
ju st as any other HP-4l C function. These functions are available o nl y
while the printer is plugged in.
Ref er to section 4 in the HP-4JC Owner 's
Handb ook and Pr og ramming Guid e for inf ormation about executing and
assigning func
ti ons.
Standard HP-41C Printing Functions
The re are four standard HP-41C func ti ons that will automa ti ca ll y print as
we
ll as perform their normal functions while the print er is attached and
set to the proper print mode. These functions are 1
VIEW I, 1 AVIEW I, IPROMPTI
and 1 ArYV I. Th ey pe rf orm the ir normal functions as well as the printing
functions regardless
of whether they are executed from the keyboard or
in a program.
View Register Contents IVIEW I
The I VIEW I (view regist er contents) func ti on causes the co nt ents of the
specified register to be displayed. With the printer attached,
IVIEWI
causes the co nt e nt s of the specified regist er to be printed as we ll as dis-
pl ayed. Th e example bel ow stores a number into a register then uses
1 VIEW I to dis pl ay and print it.
Keystrokes
27.9380 15TO I 01
_IVIEWI01
ALPHA View IAVIEW I
Printer: MAN ~
27.93se
The 1 AVIEW I( ALPH A view) function dis pl ays the conte nt s of the ALPHA
register.
Wh en the printer is attached, I AVIEW I displays and prints the
co
nt e nt s of the ALPHA register. In the exa mple, an ALPHA string is
pl aced into the ALPHA register and then displayed and printed using
1 AVIEW I.
Keystrokes
I ALPHA I
PRINT IT_
_ 1 AVIEWI
1 ALPHA I
Display
PRINT IT_
PRINT IT
Printer: MAN ~
PRINT IT

Printer Operations 17
Prompting IPROW'TI
When this standard HP-41 C function is executed in a program, it displays
the contents
of the ALPHA register and halts program execution. While
the printer
is attached and the print mode switch is set to NORM or
TRACE, the execution of IPROMPTI displays a nd prints the message in the
ALPHA register, and then halts program execution. While the print
mode switch is set
to MAN, execution of IPROMPTI displays the ALPHA
register and halts program execution but does not print.
Executed from the keyboard,
IPROMPTI simply displays the contents of the
ALPHA register while the printer
is set to NORM or TRACE. The
example here shows how IPROMPTI prints when executed from the
keyboard (the example assumes that the contents
of the ALPHA register
are intact from the previous example).
Keystrokes
Ixea II ALPHA I
PROMPT
IALPHA I
Display
PRINT IT
Paper Advance I ADV I
Printer: .-J NORM
PROMPT
PRINT IT
To advance the printer paper, press the Paper Advance key, IAt1IIl, on the
printer. Pressing this key once advances the paper a single line. Holding
the key down continues advancing the paper until you release the key.
Another way to advance the paper
in normal and USER modes is to
execute the I
At1IIl functions from the keyboard. Each execution of IAt1IIl,
either in a program or from the keyboard, advances the paper a single
line. Pressing the advance key on the printer while the HP-41C
is set to
PROM mode inserts an I At1II I function into program memory.

18 Printer Operations
HP 82143A Printer Functions
All of the rest of the functions covered in this section are availa bl e o nl y
while the printer is plugged into the HP-4l C.
Tw o of these functions are
ava
il a bl e by press in g the IPRINT I key on the printer.
The IPRINT IKey
The IPRINT I key on the printer provides a method for printing the co n-
tents of the dis pl ay at any time, in any print mode.
While the
HP - 4IC is not in ALPHA mode , pressing I PRINT I prints the
co nte nt s of the X-register (in PRGM mod e, pressing IPRINT I inserts a
I PAX I into the program). While the HP - 4l C is set to ALPHA mod e,
press in g IPRINT I prints the co nt e nt s of the ALPHA r eg ister (in PRGM/
ALPHA mode, pressing IPRINT I inserts a I PAA I into the program ).
Keystrokes
123,456,789
IPRINTI
IALPHA I
ABCDE
IPRINT I
I ALPHA I
Print X-Register I PRX I
Printer: MAN ~
ABCDE
I PAX I ( print X) prints the contents of the X-register r ega rdless of the
print mode setting. It pe
rf orms the same function as pr essing the IPRINT I
key on the printer when the ca lculator is not set to ALPHA mode.
Reme
mb er, you ca n insert a I PAX I into a program by pr essing IPRINT I on
the printer while the
HP-41C is s et to PRGM mo de .
Keystrokes
123,456,789
I XEO II ALPHA I PRX
I ALPHA I
Printer: MAN ~
12 3, 45 6,7 89 .8 ***