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

The shift register data advances on the LO-to-HI (positive-going) transition of the clock.  CLK should be set = 0 from the start.
 

Where you have:



  CLK = 0
  CLK = 1
  
  value1 = value1 >> 1 

  NEXT
  NEXT 



[code]Change this to: 


[code]

  CLK = 1 

  CLK = 0
  
  value1 = value1 >> 1 

  NEXT
  NEXT 


[/code]

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