单片机编程问题... 反复将0FH这个数送入片外RAM2000H~200FH单元...并每隔200微

Question

秒将P1.0取反一次.。(T0定时200微秒...中断方式)

Answer 1

ORG 0000H
LJMP MAIN
ORG 000BH
LJMP T0ISR
ORG 0030H
MAIN:
MOV TMOD,#02H
MOV TH0,#56
MOV TL0,#56
SETB TR0
SETB ET0
SETB EA
MOV A,#0FH
START:
MOV DPTR,#2000H
MOV R2,#16
LOOP:
MOV @DPTR,A
INC DPTR
DJNZ R2,LOOP
SJMP START
T0ISR:
CPL P1.0
RETI
END