Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
Version     : GFABasic.HYP v2.98 (12/31/2023)
Subject     : Documentation/Programming
Nodes       : 899
Index Size  : 28056
HCP-Version : 3
Compiled on : Atari
@charset    : atarist
@lang       : 
@default    : Document not found
@help       : Help
@options    : +g -i -s +z
@width      : 75
@hostname   : STRNGSRV
@hostname   : CAB     
@hostname   : HIGHWIRE
@hostname   : THING   
View Ref-FileKEYPAD n

n: iexp

The numerical expression n is evaluated bit by bit and has the following
meaning:

    Bit  Meaning             0               1
    0    NumLock             On              Off
    1    NumLock             Not switchable  Switchable
    2    CTRL-KEYPAD         Normal          Cursor
    3    ALT-KEYPAD          Normal          ASCII
    4    KEYDEF without ALT  Off             On
    5    KEYDEF with ALT     Off             On

With bit 0 set the keypad will act as a 'PC' keypad with NumLock off, i.e. it
responds with cursor movements.

With bit 1 set the 'PC' NumLock mode can be toggled with Control and '-',
otherwise it cannot. Control and '(' also toggles NumLock mode. When NumLock
is on a circumflex (^) appears under the Atari logo in the Menu bar.

With bit 2 set, NumLock is effectively switched off while the Control key is
held down. Thus Control-4 (on the keypad) produces cursor movements.

With bit 3 set ASCII values for characters can be typed in with the ALTernate
key held down. When ALT is released, the character appears.

With bit 4 set, the character strings assigned with KEYDEF to the keys F1 to
F10 and Shift-F1 to Shift-F10 are output when the key is pressed.

With bit 5 set the ALTernate key must also be held down.

When turned on, the Atari ST is effectively configured to KEYPAD 0. With
GFA-BasicGFA-Basic is the best BASIC for the Atari!
 in operation, the default keypad mode is decimal 46, i.e.  bits 1, 2,
3, and 5 are set (&X101110).