{{htmlmetatags>metatag-robots=()
metatag-title=(EVERY...CALL | ugBASIC User Manual)
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metatag-description=(Manual page for EVERY...CALL)
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metatag-og:title=(EVERY...CALL | ugBASIC User Manual) 
metatag-og:description=(Manual page for EVERY...CALL)
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====== ugBASIC User Manual ======

===== EVERY...CALL ✓ =====

===== SYNTAX =====
     EVERY value[,timer] TICKS CALL identifier

==== PURPOSE ====





Define the call of a procedure at regular intervals, without 
interfering with the main program. You must specifying the length of time 
between every call, measured in TICKS. The ugBASIC branches to the 
procedure EVERY ''value''/''TICKS PER SECONDS'' seconds.

Note that the procedure execution 
time should be less than the interval time, or the main program timings 
will be affected. 

There are 8 delay timers from 0 to 7 which can be specified with ''timer''. 
If omitted ''timer'' defaults to 0. In the case of parallel task has 0 the 
highest and 8 the lowest priority.

With ''EVERY OFF'' and ''EVERY ON'' you can disable or enable the timed 
calls. Procedures run as long as the main loop / program runs, even the 
main programm is paused. It is important to know or realise that 
low-priority-procedures which occurs simultanously to higher-priority-procedures 
are not lost. Their task remains or handled again after finishing the higher-prio interrupt.



==== EXAMPLE ====
    EVERY 50 TICKS CALL changeBorderColor
    EVERY 50,2 TICKS CALL changeBorderColor


See also the following example files:
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/control_periodic_02.bas|control_periodic_02.bas]]''
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/control_periodic_03.bas|control_periodic_03.bas]]''


==== ABBREVIATION ====
   Ev...Ca


==== AVAILABLE ON ====
  * Dragon 32
  * Commodore 128 (MOS 8502)
  * SEGA SG-1000
  * Commodore 64
  * Commodore VIC-20
  * Atari (400/800)
  * 
  * Commodore PLUS/4
  * VG-5000
  * Olivetti Prodest PC128
  * Dragon 64
  * Thomson MO5
  * SEGA SC-3000
  * ColecoVision
  * TRS-80 Color Computer 3
  * MSX
  * TRS-80 Color Computer


==== ANY PROBLEM? ====
If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please [[https://github.com/spotlessmind1975/ugbasic/issues/new?title=ISSUE ON EVERY...CALL|open an issue]] for this keyword on GitHub. Thank you!===== POWERED BY =====

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