【悬赏80分】对于这段汇编程序可以提什么问题?,请把你的想到的全部列出来并给上答案,谢谢！！！
/*************显示时钟**************/
showTime:
mov P0,#01
call writeCom
mov r5,#10
mov r1,#45h
mov r4,#0
h1: mov dptr,#dataLo1
dec r5 //自减1
mov a,@r1
inc r1//自增
mov b,#10
div ab
mov r3,a
mov a,r4
movc a,@a+dptr
mov P0,a
call writeCom
mov dptr,#nub
mov a,b
movc a,@a+dptr
mov P0,a
call writeDate
inc r4
mov a,r4
mov dptr,#dataLo1
movc a,@a+dptr
mov P0,a
call writeCom
mov dptr,#nub
mov a,r3
movc a,@a+dptr
mov P0,a
call writeDate
inc r4
dec r5
mov a,r4
cjne a,#6,ee//是否跳转
inc r4
ee: mov a,r5
jnz h1
/***********直接在上面循环调用\***********/
mov a,yearBuf
mov b,#10
div ab
mov r3,a
mov P0,#084h
call writeCom
mov dptr,#nub
mov a,b
movc a,@a+dptr
mov P0,a
call writeDate
mov P0,#083h
call writeCom
mov dptr,#nub
mov a,r3
movc a,@a+dptr
mov P0,a
call writeDate
;*******星期*****
call weekShow
mov r2,#0h
tt: mov dptr,#dataSp1
mov a,r2
movc a,@a+dptr
mov P0,a
call writeCom
mov dptr,#dataSp
mov a,r2
movc a,@a+dptr
mov P0,a
call writeDate
inc r2
cjne a,#35h,tt
mov P0,#0cbh
call writeCom
ret
