Sure. If you want to re-start from location 0, then;

Code:
X VAR BYTE

TOGGLE 0

Main:
    FOR X = 0 TO 50
     IF X = 20 THEN
      PCLATH = 0
      @ GOTO 0 ' start over from 0 if X = 20
     ENDIF
    NEXT X
    GOTO Main
    
    END
This isn't exactly the same as a hardware reset, but it's close.