ugBASIC User Manual

   AFTER value[,timer] TICKS GOSUB label

Define the call of a subroutine after a specific time, without interfering with the main program. You must specifying the length of time to wait, measured in TICKS. The ugBASIC branches to the subroutine after value/TICKS PER SECONDS seconds.

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. It is important to know or realise that low-priority-subroutines which occurs simultanously to higher-priority-subroutines are not lost. Their task remains or handled again after finishing the higher-prio interrupt.

  AFTER 50 TICKS GOSUB 100
  AFTER 50,2 TICKS GOSUB label

See also the following example files:

• control_after_02.bas

 Af...Gs

• Atari (400/800)
• Atari XL/XE
• Commodore 128 (MOS 8502)
• Commodore 128 (Zilog Z80)
• Commodore 64
• Commodore 64+REU
• TRS-80 Color Computer
• TRS-80 Color Computer 3
• ColecoVision
• Amstrad CPC 664
• Dragon 32
• Dragon 64
• Thomson MO5
• Thomson MO5
• Olivetti Prodest PC128
• Commodore PLUS/4
• SEGA SC-3000
• SEGA SG-1000
• VG-5000
• Commodore VIC-20
• ZX Spectrum 48

If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!