AmstradCPC6128-hypertext-en-Sinewalker

JOY
JOY ( )
10 PRINT "To stop the program - If;
20 PRINT "operate joystick"
30 IF JOY(0)0 THEN END
40 GOTO 10
run
FUNCTION: Reads a bit-significant result from the JOY stick specified in the
(either 0 or 1).
Bit Decimal
O:Up 1
1: Down 2
2: Left 4
3: Right 8
4: Fire 2 16
5: Fire 1 32
Hence for example, if the main 'fire' button (Fire 2) on the first joystick is pressed
while the joystick handle is· being '-moved left, the function JOY ( 0) returns a
decimal value of20, corresponding to 16 (Fire 2) + 4 (Left).
Further information concerning joysticks will be found in the chapter entitled 'For
your reference .... '.
Associatedkeywords: C LE A R IN PU T, IN KE Y
I{EY
KEY ,
KEY 11,"border 13:paper 0:pen 1:ink 0,13:
ink 1,0:mode 2:list"+CHR$(13)
.... now press the [ENTER] key.
COMMAND: Assigns the to the key's
specified. Thirty-two expansion tokens are supported, in the range 0 to 31, these
occupying the key values 128 to 159. Keys 128 (0 on numeric keypad) to 140
([CONTROL] [ENTER]) are by default assigned to print numbers 0 to 9, a decimal
point, [RETURN] and RUN" [RETURN] - (for cassette operation), but may be
re-assigned to other s as required. Expansion tokens 13 to 31 (key
values 141 to 159) are empty strings by default, but may be be expanded and assigned
to keys, using the KEY DE F command described in the next example.
Complete List of Keywords Chapter 3 Page 37