Apple II User Manual

PRINT commands will be directed to the display only.  If the printer is turned on, all commands

and data from PRINT commands will be directed to both the printer and display.  With the printer

off, data can still be directed to the printer by using the PRINT) command (see Subject 305).

Similarly, INPUT statements will output data to the printer in response to the printer control state.

An INPUT! statement will output data to the printer even if the printer control is off (see

Subject 305).

200  GETTING STARTED WITH BASIC

201  BASIC COMMAND SET

This section is not intended to be a detailed course in BASIC programming.  It will, however, serve

as an excellent introduction for those of you unfamiliar with the language.

We recommend that you try each example in this section as it is presented.  This will enhance your

"feel" for BASIC and how it is used.  Table 201-1 lists all the AIM 65 BASIC commands.

              NOTE

    Any time the cursor (^) is displayed in column 1

    a BASIC command may be typed in.  End all

    commands to BASIC by typing RETURN.  The

    RETURN tells BASIC that you have finished

    typing the command.  If you make an error, type

    a DEL (RUBOUT on a TTY) to eliminate the

    last character.  Repeated use of DEL will

    eliminate previous characters.  An @ symbol

    will eliminate that entire line being typed.

    Table 201.1.  AIM 65 BASIC Commands

    Commands                      Input/Output

    --------                      ------------

    CLEAR                         DATA

    CONT                          GET

    FRE                           INPUT

    LIST                          POS

    LOAD                          PRINT

    NEW                           READ

    PEEK                          SPC

    POKE                          TAB

    RUN

    SAVE

                                  String Functions

                                  ----------------

    Program Statements            ASC

    ------------------            CHR$

    DEF FN                        LEFT$

    DIM                           LEN

    END                           MID$

    FOR                           RIGHT$

    GOSUB                         STR$

    GOTO                          VAL

    IF...GOTO

    IF...THEN

    LET                           Arithmetic Functions

    NEXT                          --------------------

    ON...GOSUB                    ABS

    ON...GOTO                     ATN*

    REM                           COS

    RESTORE                       EXP

    RETURN                        INT

    STOP                          LOG

    USR                           RND

    WAIT                          SIN

                                  SGN

                                  SQR

                                  TAN