Atari 820 User manual

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ATARI ®
A Warner Communications Companya

INTRODUCTION
NOTE: Please read this manual carefully and
throughly before operating your ATARI® 820™
Printer. The Printer
is a delicate machine and can
be damaged by improper
use.
The ATARI 820™ Printer provides printout for the
ATARI 400™ and the ATARI 800™ Personal Com-
puter Systems.
Many combinations of hardware
and software make use of the Printer . Application
programs provide an option to print out results
whenever appropriate . BASIC and ASSEMBLY
LANGUAGE
Cartridges include Printer commands ,
as does the ATARI FILE MANAGER & DISK
OPERATING SYSTEM (DOS), which is available for
the ATARI 800.
UNPACKING
Your ATARI 820 Printer comes with:
• Printer
• Bond Paper Roll
• Paper Mandrel
• Ribbon
• Data Cord
• Instruction Manual
• Attached Power Cord
Save your original packing materials and reuse
them if you need to ship your Printer or store it for
long periods .
PAPER ------------------------~
MANDREL ----------------------~~
PAPER RELEASE LEVER
-
((((((((((((((((((((({{{(ff([{{(({(f(f{fl
PLA TEN ;;::::=----~:1;;~ ~~---- .-f
PRINTING H ~ E~A ~ D ~~~~~~~!~~~=~~~~~~ ~~i
RIBBON DE:
1
LECTOR
RIBBON TENSION BRACKET
RIBBON
POST
SPOOL
CAM DRIVE
1

2
SETTING UP THE PRINTER
((((((((fffflllllllllllllllll))))
DATA CORD
l •
Follow the steps below to set up your Printer and
connect it to the computer. You will find detailed
diagrams and instructions on the following pages.
DO NOT OPERATE THE PRINTER WITHOUT Rl B-
BON OR PAPER or you may damage the printing
head solenoids.
1. Plug
the power cord into a 110-115 volt AC
outlet (with the power switch OFF).
2. Plug the data cord into the serial 1/0 port
(labeled PERIPHERAL on the Console), or if
another peripheral is in use, into the jack label-
ed l/0 CONNECTOR on that peripheral. Plug
the data cord into either jack labeled 1/0 CON-
NECTOR
on the printer.
3. Turn the power switch (PWR.) ON.
4. Press the paper advance (PAPER ADV.) button
once.
5.
Open the printer cover and load the paper
around the platen as shown in the photos on
the following pages.
6.
Check the ribbon for proper installation.
PRINTER TIMEOUT
In order to prevent overheating, the Printer is
equipped with an automatic timeout cycle which
halts printing for approximately three seconds.
During continuous use you will notice that the
printer stops periodically and then continues. Fre-
quent timeouts indicate that the Printer is
operating CORRECTLY. Any attempt to override
the timeout period is likely to damage your Printer.

FRONT VIEW
D
a
ON
PWR .
OFF
Paper Advance Button -Advances
paper automatically.
Power ON/OFF Switch
~. POWNR.
~ Power Indicator Light
RIBBON DEFLECTOR
RIBBON TENSION
BRACKET --------~~
RIBBON POST
BLUE SPOOL
BACK VIEW
Fuse -Twist in direction of arrow to
remove and replace fuse.
1/0 Connectors -Identical jacks ac-
com modat e data co rds from Console or
other peripheral components. Con-
nectio ns may be made in any order
with either jack.
IMPORT ANT -Always replace a fuse only with one
that
has the same electrical ratings. (2 AMP, Type
JAG)
TEAR BAR
RIBBON GUIDES
PRINTING HEAD
WHITE SPOOL
INSTALLING THE RIBBON
Remove the two ribbon spoo ls from the package .
The
white spool (containing the new ribbon) fits on
the right ribbon post; the blue spool (which is the
empty one) fits on the left ribbon post. The ribbon
must follow the same path as shown in the illustra-
tion. When properly installed, the ribbon is posi-
tioned in front of the ribbon tension bracket (the
side closest to you) , and aro und the two ribbon
guides (the side farthest away from you) .
Make certain the ribbon is installed correctly
befo re operating the Printer.
3

4
LOADING THE PAPER
Open the printer cove r by pulling up on both sides.
Check
the printer mechanism - make sure the
printing head is on the left side as shown in the il-
lustration. If necessary, press the PAPER ADV . but-
ton to position the printing head prope rly . This
must be done before attempting to load the paper
and no attempt should be made to position the
printing head manually .
DO NOT ATTEMPT TO LOAD PAPER OR INITIATE
PRINTING WHEN THE PRINTING HEAD IS IM-
PROPERLY POSITIONED OR YOU MAY DAMAGE
THE PRINTER.
The manual paper advance sho uld turn
cou nt erc lo ckwise or away from you r se lf with
moderate pressure. Turning the manual paper ad-
vance clockwise or toward yourself could damage
it as could forcing it in any manner .
For easiest
loading , cut off the end of the paper to
create a smooth edge. You may want to leave the
paper roll out of the Printer and off to the side
when loading, or you may want to place the roll in
the depression behind the platen, whichever is
easiest for you . Slide the mandrel into the paper
roll. If loading from the depression behind the
platen, be sure the ends of the mandrel click into
their slots in the printer case. When the paper is
properly installed the Printer will close easily over
a full roll (31f4-inch diameter) .
The
paper roll sits in the depression behind the
platen . The paper passes over the metal bar which
is visible below and behind the pl aten and is guided
by two white nylon sliders on the bar. It feeds
around the platen , under the clear plastic paper
guide , the ribbon , and the tear bar, and then out the
top of the Printer .
Feed
the end of the paper over the bar and under
the back edge of the platen . To advance the paper
around the platen , press the PAPER ADV. button
and hold it until the paper comes out from under
the tear bar OR turn the manual paper advance
counterclockwise (away from yourself). It may help
to pull the PAPER RELEASE LEVER forward when
loading the pape r.
Always check to make sure the paper is straight. If
you need to align the paper around the platen pull
the PAPER RELEASE LEVER forward and pull up the
paper roll a few inches.

PRINTER COMMANDS
Each piece of software, whether cartridge , cassette, or diskette based, will have its own commands for acti -
vating the Printer. Consult the software manual which accompanies the software you wish to use with the
Printer for complete Printer commands.
BASIC- When you are familiar with ATARI BASIC Computing Language you will know how to use the com-
mands PRINT and LIST. To PRINT on the Printer instead of the screen, replace PRINT with LPRINT in your
BASIC source programs . To LIST on the Printer , use LIST"P:" or L."P instead of LIST . (No closing quotation
marks needed.) Here 's an example : Type this BASIC Program into your computer:
DO THIS
TYPE
10 PRINT "THE PRINT COMMAND COMES OUT HE
t\ r :: ... 'di''hV'
20 LPRINT "THE LPRINT COMMAND COMES OUT
When you RUN this program each PF: I NT statement will appear on the screen like this:
DO THIS
TYPE
F.: UN
PUSH
i;tfiiii;U*
SEE THIS
Your Print er will print only the L..PRINT lines like this:
To see
your program again:
DO THIS
TYPE
L I f:lT
PUSH
________ .._ .......__,_._. -~~ ~ ~~~-""""'--w ~
THE LPRINT COMMAND COMES OUT HERE.
SEE THIS
5

6
To get a printout of your program :
DO THIS
SEE THIS
TYPE
LIST •p
PUSH
10 PRINT •THE PRINT COMMAND COMES OUT HE
RE. •
l;ljiii;J:I
20 LPRINT •THE LPRINT COMMAND COMES OUT
HERE."
The ATARI BASIC REFERENCE MANUAL contains a complete description of all ATARI BASIC Language com-
mands. (Also see News Bits No . 2)
ATARI FILE MANAGER & DISK OPERATING SYSTEM (DOS) -The Disc Operating System Manual wiJI pro-
vide you with complete instructions on using the DOS software to access the Printer and other peripheral
components .
TECHNICAL SPECIFICATIONS
AND REORDER NUMBERS
ATARI 820 Printer
• high resolution, 5x7
dot matrix, impact printer
• 40 characters per line
•
horizontal & vertical alphanumeric characters
•
power switch and indicator light
• paper advance
button
• built-in microprocessor
• crystal controlled for data accuracy
Standard Roll Paper
•
width , 3 7/8 inches x 3-1/4 inches diameter
available at most stationary stores
Mandrel/Ribbon
• Mandrel , ATARI part no. C014853
• Ribbon, ATARI part no. C014854
Addressograph/Multigraph part no.
116-2395-366
Printing Speed
•
approximately 40-characters per second
•
automatic 3-second timeout for cool down as
needed
Data
Cord
• ATARI part no. CA014122
Fuses
• 2 AMP type 3AG fast blow ATARI part no.
46-2032001
Locations
for ordering inked ribbons:
AM OFFICE SUPPLY
7209
St. Clair Ave .
Cleveland, OH 44103
(Or your nearest Addressograph/Multigraph (AM) dealer .)
CALIFORNIA RIBBON & CARBON CO.
5816 Pine
Avenue
Maywood , CA 90270
COLUMBIA RIBBON & CARBON MFG. CO., INC.
45 Executive Drive
Plainview, NY 11803
KLEEN STRIKE MFG. CO., INC.
8173 Main Street
Ellicott City, MD 21043

ENTRY LEVEL PRINTER & DISK DRIVE
OPERATIONS IN BASIC
When the power is turned OFF on a computer, all
programs
or data stored in memory are lost . The
810 Disk
Drive is used to store programs and to in-
sert (load) programs
back into the computer
memory bank when required for use.
Reference
I. To store and retrieve programs on diskette:
A. Power up disk unit
B. Put diskette in disk unit
C. Power up computer
D. To save program on diskette-
1. Type in program
2. Type SAVE "D:NAME"
3. BASIC will save program NAME on
diskette .
Sample Program
DO THIS
TYPE
100 REM*** INTEREST
110 PRINT ' IF YOU TYPE THE AMOUNT OF P
RINCIPAL'
120 PRINT
'AND THE INTEREST RATE PER Y
EAR, I WILL'
130 .PRINT
'SHOW YOU HOW YOUR MONEY GRO
WS, YEAR BY'
140 PRINT '
YEAR. TO STOP MEr PRESS THE
BREAK KEY,'
150
Pf\INT
160 PRINT
'PRINCIPAL';
165
INPUT
p
170 PRINT 'INTERE
ST
175 INPUT R
180
LET N =1
190 PRINT
RATE';
200
LET A• P*I1tR / 100 1 AN
210 PRINT 'YEAR= ';N
220 PRINT 'AMOUNT =' ;A
230 LET N=Nt1
240 GOTO 190
RUN
SEE THIS
PUSH
@,J;ii!M to stop program .
DO THIS
TYPE
SAVE •D:INTEREST"
Above Program is recorded on Diskette .
7

8
Reference
E. To retrieve program from diskette-
1. Type LOAD " D:NAME " -------___,~
2. Program can now be RUN, changed,
etc.
3. Type LIST
F. To RUN program from diskette
1. Type RUN "D:NAME"
If you have a program that you wish to edit
(change), use the commands listed below. Or, if you
wish to save the original program , as well as the
modified version, give the modified program a new
name.
G. To save listed version on diskette-
1. Type LIST "D: NAME ", N, M- Lines N
through M will be listed to diskette
H. To retrieve listed version on diskette-
1. Type ENTER "D:NAME"
This will merge diskette file with data
which is already in memory .
2. Type LIST
Change
name of the revised program if yo u wish to
retain both the original and revi se d progr ams.
Sample Program
DO THIS
TYPE
LOAD •o:INTEREST"
SEE THIS
DO THIS
TYPE
100 REH*** INTEREST
110 PRINT • IF YOU TYPE THE AMOUNT OF p
RINCIPAL •
120 PRINT •AND THE INTEREST RATE PER Y
EAR, I WILL •
130 PRINT •sHOW YOU HOW YOUR MONEY GRO
WS, YEAR BY•
140 PRINT •rEAR. TO STOP HE, PRESS THE
BREAK KEY. •
150 PRINT
160 PRINT •PRINCIPAL• I
165 INPUT P
170 PRINT •INTEREST RATE•;
175 INPUT R
180 LET N=l
190 PRINT
200 LET A=P*( l+RilOO>AN
210 PRINT •rEAR = • ;N
220 PRINT •AHOUNT =•;A
230 LET N•N+l
240 GOTO 190
RUN
RUN UD!INTEREST"
DO THIS
TYPE
SEE THIS
LIST "D!INTEREST" 150,240
SEE THIS
NOTE: Number s 100 to 140 were deleted from
program.

Reference
II. To store and retrieve data on diskette
from a program:
A. Power up disk unit
B. Put diskette in disk unit
C. Power up computer
D. To store data on diskette from program-
1. OPEN#1 , 8,0 , "D : DATA "
tells computer to allow writing to
diskette file named DATA
2. PRINT#1 · X· " "· Y· ""· Z ~
writes a r~c~rd ~ha~ ~~~·ks like: X, Y, Z
(X, Y, & Z are numbers)
3. CLOSE
#1
When program is done this tells com-
puter that file is finished .
Sample Program
Write
DO THIS
TYPE
1 REM THIS PROGRAM WRITES A FILE OF
CHECK NUMBERS AND THEIR AMOUNTS
5 DIM CHECKNAME$1401
10 OPEN t1, s, Q, 'D:CHECKS'
20
CHECKAMT=O: CHECKNAME$=''
25 PRINT 'CHECK NUMBER';
30 INPUT CHECKNUM
35 IF CHECKNUM=O THEN 80
40
PRINT 'CHECK AMOUNT';
50 INPUT CHECKAMT
60 PRINT 'WHO WAS CHECK TO';
70 INPUT CHECKNAME$
80 PRINT t1;CHECKNUM;•,•; cHECKAMT;•,•;cHECKNAME$
90
IF CHECKNUM >O THEN PRINT: GOTO 20
100 CLOSE t1
This is RUN of above program :
SEE THIS
This is what the information looks like on disk:
100,12.51,
JOHN SMITH
101,24.34,GEORGE BROWN
102,102.67,HEAVY CHEVY
0,0
9