Hi Graham !

If you write:


        DLY100 MOVLW   100
        DLYMS  MOVWF   LOOP1
        DY0    MOVLW   -125
               MOVWF   TMR0

I guess you do the loop 0 times. The name of it indicates that you want to loop 100 times, but 100 Hex is 256 Dec. This is more than the W Reg can handle (8 bit processor - right ?) so - I think you actually load 0 . 

With the MPASM .100 is one hundred; it looks to me like you meant to write    -100 (I'm not familiar with the various assemblers around).

Blinks now ?



Sven in Sweden