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

This program

 


[code]
DEVICE SX28, OSCXT2, BOR42 
FREQ 50_000_000 
 

  

value VAR BYTE 

ShiftReg PIN RC OUTPUT ' Data is output on pin RC.0 
ClkPin PIN RB.0 OUTPUT 
 

  

PROGRAM Start 
 

  

Start: 
  FOR value = 0 TO 255 
    ASM 
      CLRB ClkPin 
      MOV ShiftReg,value ' Output bit 0 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 1 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 2 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 3 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 4 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 5 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 6 of value 
      SETB ClkPin 
      CLRB ClkPin 
      RR ShiftReg ' Output bit 7 of value 
      SETB ClkPin 
    ENDASM 
  NEXT 
END 
[/code]
Sends 2048 bits in 153.58uSec or 13.33 MHz.

 

Bean.

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