thnks wolwil , ive tryed this code but nothings happening,any idea how to address this ic
Code:
DPIN    VAR PortB.0                 
CPIN    var PortB.1
STB     VAR PORTB.2              
B0      var     byte 
B1      var     byte



main:
low STB
pauseus 1
b0 = $01 

                        
     shiftout DPIN,CPIN,1,[$00,b0]  
     Pause 100               
     shiftout DPIN,CPIN,1,[$03,b0]
     high STB


        end