TIMER 1 MODE 1

MOV TMOD, #10H  ; SET TMOD VALUES
MOV TH1, #0FFH  ; SET TIMER UPPER BYTE TO FFH
MOV TL1, #0F0H  ; SET TIMER LOWER BYTE TO F0H
SETB TR1        ; SET TIMER 1 TO RUN (SET RUN BIT)
REPEAT: JNB TF1,REPEAT  ; STAY IN REPEAT UNTIL TIMER 1 OVERFLOW
CLR TR1                 ; OUT OF LOOP CLEAR TIMER 1 RUN BIT (OFF TIMER 1)
END             ;END OF PROGRAM