Chawter
10
I
BASIC
Kevwords
TIME R/Trap
Statement
TIMER
action
Turns on, turns
off,
or
temporarily halts timer event trapping.
Action
may be any
of
the following:
ON
enables timer event trapping.
OFF
disables timer event trapping.
STOP
The TIMER
ON
statement turns on the trap. BASIC checks the
the value
of
timer after each program line. If the number is
equal to that in the
ON
TIMERO GOSUB statement, BASIC
transfers program control
to
the line number specified.
The TIMER STOP statement temporarily halts timer trapping.
If the timer equals the specified number, BASIC does not trans-
fer program control to the
ON
TIMERO GOSUB statement until
you turn on trapping again by executing a TIMER
ON
state-
ment. BASIC remembers that the timer value was equal and
branches
to
the subroutine immediately after trapping is turned
on again.
The TIMER
OFF
statement turns
off
timer trapping. BASIC
does not remember if the value
of
timer equals the number spec-
ified when trapping is turned on again.
temporarily suspends timer event trapping.
Sample Program
See
ON
TIMERO GOSUB
for
an example.
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