Can PBP read optical encoder damn fast? :)

[richard]

You could always write a little program to test your supposition and find out , you never know you may learn something

TOUCH                var byte
A   VAR TOUCH.0
B          VAR TOUCH.1
RES        var byte    
    
    
touch = 4
Debug 9,"XOR TRUTH TABLE"
Debug ,13 ,10,"A",9,"B",9,"A^B",9,"CUT",13 ,10
while touch
    touch=touch-1 
    touch=~touch 
;CODE UNDER TEST
   IF A = 1 or  B = 1  AND A <> B THEN 
       RES=1
   ELSE
      RES=0
   ENDIF
   DEBUG #A,9,#B,9," ",#A^B ,9," ",#RES ,13 ,10
   touch=~touch     
WEND