Apple II 사용자 설명서

address of the ATN function instructions.  This can be done using BASIC initialization, as follows:

<5>

MEMORY SIZE? 3968               Limit BASIC to F80

WIDTH?                                            16

 3438 BYTES FREE

  AIM 65 BASIC V1.1

POKE 188,189                    Change ATN function vector low to $BD

POKE 189,15                     Change ATN function vector high to $0F

?ATN (TAN(.5))                  Test case to verify proper ATN function program

 .5                             Expected answer = .5

SAVING ATN OBJECT CODE ON CASSETTE

The object code for the ATN function can be saved on cassette by dumping addresses $00BB

through $00BD (Jump instruction to ATN) and $0F80 through $0FEC (constants and instructions)

after the function is initially loaded and verified.

The ATN function can then be loaded from cassette by executing the Monitor L command after

BASIC has been initialized via the 5 command.  After the ATN function has been loaded, reenter

BASIC with the 6 command.

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