USING YOUR CASSETTE TO SAVE A PROGRAM
31
USING YOUR CASSETTE TO LOAD A PROGRAM
33
APPENDIX
I .
Error messages
36
2. Basic commands
4 0
String functions
43
Arithmetic functions
44
Special symbols, commands and statements
45
I/O Commands
46
3.
Special keys
46
4. Cleaning Your PET
47
5.
Cleaning and demagnetizing your tape deck head
48
Figure 6. Cassette deck head area
49
6.
References
49
Congratulations ...
We congratulate you on your purchase of a Commodore PET com-
puter and welcome you to the growing legion of PET users.
The number of applications for the PET is as great as your imagina-
tion and the number of programs available.
We shall attempt, in this modest booklet, to introduce you to the art
of doing your own programming and to the PET method of using
prepared programs.
We do recommend you to the brief bibliography in this booklet's
appendix. Enjoy learning about your PET and the world of com-
puters as much as this booklet's authors did.
By the time you're through with this booklet you should be on your way
to enjoying and using your PET to its fullest.
Unpacking your PET
and turning it on
Please check the carton for any special unpacking instructions.
And examine carefully
,
y our P17 f or any concealed dam age. If there is
any , report this IM M EDIA T EL Y t o b ot h ('com m od or e (or y our
dealer) and t o t he shipping agent .
Remove your PET from its protective shipping carton, and place it on
the counter, desk or other suitable surface, then plug it into any
standard, grounded electrical outlet.
Push the rocker switch, in the lower left rear where the line cord
enters the unit, to the power-on position.
Momentarily you may be able to see that the PET television display
contains a collection of random letters and symbols. This is normal. On
"Power up," PET's electrical circuits have to wake up slowly before they
can function and clear the screen.
Almost as fast as you can blink an eye, the screen will clear and one of
the two messages below will be printed out in white letters on the black
screen. The second line of the message will vary depending on
www.commodore.ca
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