Apple II User Manual

    memory to be initialized with AA (hex) in all bytes,

    starting with address 532.  This, of course, destroys

    any previous BASIC programs, data in the AIM 65

    Editor Text Buffer, or machine level routines that

    may have been stored in this portion of memory.

    Be sure to save any desired data or programs that

    may exist in this area before entering BASIC with

    the 5 key.

    Note that text in the Text Buffer or machine level

    routine may co-exist in memory with BASIC by

    locating such text or routines in upper memory

    and entering the highest BASIC address with a

    value lower than the starting address of such text

    or routines.

EXITING BASIC

To escape from BASIC and return to the AIM 65 Monitor, type ESC any time the BASIC command

cursor is displayed.  You can also escape BASIC while a program is running, by pressing the F1 key

(see Subject 301).

Pressing RESET will also cause the AIM 65 Monitor to be entered as well as performing a hardware

reset of AIM 65.

REENTERING BASIC

BASIC may be reentered by typing 6 whenever the AIM 65 Monitor prompt is displayed.  In this

case, however, any existing BASIC program is retained in memory.  AIM 65 will respond to a

Key 6 entry with:

    <6>

    ^6>

BASIC CURSOR

The BASIC cursor (^), displayed in column 1 whenever BASIC is in the command entry mode,

indicates that a BASIC command can be entered.  The last displayed data resulting from the previous

command is retained except for column 1 to provide information continuity with the previous

command or displayed output data.  This is especially helpful when the printer control is turned off

to preserve printer paper.

When the first character of the next command is typed, the display will blank except for the newly

typed character.  The cursor then advances across the display in accordance with typed characters

to indicate the character input position.

The displayed cursor does not appear on the printer output, thus any data printed in column 1 will

be retained.

              CAUTION

    The minus sign associated with any negative values

    that are displayed starting in column 1 will be

    replaced with the cursor in the BASIC command

    entry mode.  In the case of direct commands, the

    minus sign will only flash before the cursor is

    displayed if the printer control is on or may not

    appear at all if the printer control is off.  In order

    to retain the minus sign, a leading blank should

    be displayed before the value is displayed (see

    Subject 204).

PRINTER CONTROL

While in the BASIC command entry mode, the printer may be turned on or off by typing PRINT

while CNTL is pressed (CNTL PRINT).  The on/off state of the printer is displayed after typing

PRINT.

If the printer is turned off, statements in the BASIC command entry mode and data output from