5_4.txt

This are the Laboratory programs for the 89c51

;TIMER IN MOD 2
ORG 0000H
MOV TH0,#0FEH
MOV TMOD,#02H
MOV TL0, #0CH
SETB P1.0
SETB TR0
XXX:
JB TF0,CMPL
SJMP XXX
CMPL:
CLR TF0
CPL P1.0
SJMP XXX
END