为什么我增大对计数器的赋值,LED灯循环间隔反而减小,而我减小计数器赋值,LED循环间隔反而增大
ORG 0000H
LJMP MAIN
ORG 0003H
LJMP INTER
ORG 0020H
MAIN: MOV SP,#60H
MOV TMOD,#01H
SETB EA
CLR IT0
SETB IE0
SETB EX0
SETB TR0
CLR C
MOV A,#01H
MOV P1,A
MOV R0,#14H
TIM1: MOV TH0,#0E8H
MOV TL0,#0ECH
JNB TF0,$
CLR TF0
DJNZ R0,TIM1
JNC RL0
RR0: RR A
MOV P1,A
LJMP TIM1
RL0: RL A
MOV P1,A
LJMP TIM1
INTER:CPL C
RETI
END