Atari 800 User Manual

166 User 's Handbook to the Atari 400/ 800 Computers
PTRIG
The PTRIG fun c tion return s the va lue of 0 if the specified paddle
contro ller butt o n is d ep r esse d. A 1 is re turned if the button is
released.
CONFIGURATION
X = PTRIG(a)
The va lue of the argument (a) indi ca t es the number of the
paddle . A pair of controllers can be plugged into each of the
controller jacks on th e compu ter. Th e first jack accepts paddlesO
and 1. The second jack accepts paddl es 2 and 3, etc. A total of 8
paddle contro lle rs can be u se d at one tim e.
EXAMPLE
IF PTRIG(3) = 0 THEN END
The statement
in the preced ing example ends the program if the
button on paddle 3 is being pressed.
PUT (PU.)
The PUT statement is used to send one byte to an output device.
One byte represents an int eger between 0 and 255.
CONFIGURATION
PUT #a , b
The first
argument of a PUT stateme nt is the I/ O channel
number. The second argument is the va lue that is sent to an
output device . If e ith er of the a rgum ents are not integers , they
are rounded off.
An OPEN statement must precede the PUT statement except
when the PUT statement is used with graphics displays. The first
argument of the PUT statement must correspond to the I/ O

Atari 800 Specifications

General

Brand	Atari
Model	800
Category	Desktop
Language	English