帮我看一看,这个51汇编程序有点问题

只看该作者 · 2010-10-13 14:33

本帖最后由 cfstep 于 2010-10-16 20:14 编辑

AT89C2051单片机控制步进电机工作原理
下面的程序用伟福编译能通过,但程序中没有写明T1的中断入口地址?
电路图在http://cfstep.blog.163.com/blog/static/17237076420109884741307/

MOV       20H,#00H
MOV       21H,#00H
MOV       P1,#0C0H
MOV       TMOD,#60H
MOV       TL1,#0FFH
MOV       TH1,#0FFH
SETB       ET1
SETB       EA
SETB       TR1
SJMP       $
;***********计数器1中断程序************
IT1P:    JB       P3.7,FAN             ;电机正、反转指针
;*************电机正转*****************
         JB       00H,LOOP0
         JB       01H,LOOP1
         JB       02H,LOOP2
         JB       03H,LOOP3
         JB       04H,LOOP4
         JB       05H,LOOP5
         JB       06H,LOOP6
         JB       07H,LOOP7
LOOP0:  MOV       P1,#0D0H
         MOV       20H,#02H
         MOV       21H,#40H
         AJMP       QUIT
LOOP1:  MOV       P1,#090H
         MOV       20H,#04H
         MOV       21H,#20H
         AJMP       QUIT
LOOP2:  MOV       P1,#0B0H
         MOV       20H,#08H
         MOV       21H,#10H
         AJMP       QUIT
LOOP3:  MOV       P1,#030H
         MOV       20H,#10H
         MOV       21H,#08H
         AJMP       QUIT
LOOP4:  MOV       P1,#070H
         MOV       20H,#20H
         MOV       21H,#04H
         AJMP       QUIT
LOOP5:  MOV       P1,#060H
         MOV       20H,#40H
         MOV       21H,#02H
         AJMP       QUIT
LOOP6:  MOV       P1,#0E0H
         MOV       20H,#80H
         MOV       21H,#01H
         AJMP       QUIT
LOOP7:  MOV       P1,#0C0H
         MOV       20H,#01H
         MOV       21H,#80H
         AJMP       QUIT
;***************电机反转*****************
FAN:    JB       08H,LOOQ0
         JB       09H,LOOQ1
         JB       0AH,LOOQ2
         JB       0BH,LOOQ3
         JB       0CH,LOOQ4
         JB       0DH,LOOQ5
         JB       0EH,LOOQ6
         JB       0FH,LOOQ7
LOOQ0: MOV       P1,#0A0H
         MOV       21H,#02H
         MOV       20H,#40H
         AJMP       QUIT
LOOQ1: MOV       P1,#0E0H
         MOV       21H,#04H
         MOV       20H,#20H
         AJMP       QUIT
LOOQ2: MOV       P1,#0C0H
         MOV       21H,#08H
         MOV       20H,#10H
         AJMP       QUIT
LOOQ3: MOV       P1,#0D0H
         MOV       21H,#10H
         MOV       20H,#08H
         AJMP       QUIT
LOOQ4: MOV       P1,#050H
         MOV       21H,#20H
         MOV       20H,#04H
         AJMP       QUIT
LOOQ5: MOV       P1,#070H
         MOV       21H,#40H
         MOV       20H,#02H
         AJMP       QUIT
LOOQ6: MOV       P1,#030H
         MOV       21H,#80H
         MOV       20H,#01H
         AJMP       QUIT
LOOQ7: MOV       P1,#0B0H
         MOV       21H,#01H
         MOV       20H,#80H
QUIT: RETI
         END