Atari XL

214
STRIG(N)
STR$ (N)
THEN
TO
The Ateri XL Handbook
Returns 0 if fire button of
specified joystick is pressed, 1
ifnot.
Chapter 13
Converts numbers to strings
of numeric characters.
Chapter 7
See IF.
ChapterS
See FOR.
Chapter 5
TRAPN Causes jump to specified line
number when an error
occurs.
Chapter 17
USR (ADDR,[X,Y...])Calls machine code routine at
address specified by ADDR.
The optional arguments
values X, Y etc. are placed on
the 6502 hardware stack,
together with a count of the
argumen ts and the address of
the next BASIC instruction.
Chapter 17
VAL (C$)
XIO T,C,pl,p2,D
Converts string of number
characters to number.
Chapter 7
Mainly used for filling blocks
of colour on screen.
Chapter 13