In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

This is dead easy with SX/B.

[code]
DEVICE SX28, OSCXT2, TURBO, OPTIONX, STACKX
FREQ 5_120_000 

  

OutPin  VAR RC.4 

  

INTERRUPT NOCODE
  OutPin = ~OutPin     ' Toggle state of output pin
RETURNINT 64           ' Repeat every 64 clocks ([url=80KHz@5.12MHz]80KHz @ 5.12MHz[/url]) 

  

PROGRAM Start NOSTARTUP 

  

Start:
  OUTPUT OutPin       ' Set pin as output
  OPTION = $88        ' Setup RTCC interrupts with no pre-scaler
END
 
[/code]
Bean.

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