数字钟流程图(汇编语言).doc

秒表流程图及相应的程序（汇编语言版）定义（资源分配）：显示的数据：秒的高位、秒的低位、毫秒的高位、毫秒的低位。秒数据、毫秒数据定义。数码管的段输入、位控制定义。按键的定义、显示状态定义。时间状态定义：hour_h data 30hhour_l data 31hmin_h data 32hmin_l data 33hsec_h data 34hsec_l data 35hhour data 36hmin data 37hsec data 38hseg data p0w1 bit p2.7w2 bit p2.6w3 bit p2.5w4 bit p2.4w5 bit p2.3w6 bit p2.2w7 bit p2.1w8 bit p2.0key1 bit p3.2key2 bit p3.3key3 bit p3.4addflag bit 20hdecfalg bit 21hxsstate data 39hsecflag data 3ah;定义50ms的次数sectime bit 22h;定义1s到主程 Org 0000hAjmp mainOrg 000bhAjmp secprocessOrg 0030hMain: Acall chushihuaLoop: Acall anjiansaomiao Acall anjianchuli Acall shijianchuli Acall shujuchuli Acall shujuchaifen Acall xianshi Ajmp loop 初始化程序chushihua: setb w1 Setb w2 Setb w3 Setb w4 Setb w5 Setb w6 Setb w7 Setb w8 Mov seg,#0ffh Mov min_1,#0 Mov min_h,#0 Mov sec_1,#0 Mov sec_h,#0 Mov hour_1,#0 Mov hour_h,#0 Mov hour,#0 Mov min,#0 Mov sec,#0 Mov xsstate,#0 Clr addflag Clr decflag Mov seccs,#0 Mov tmod,#01h Mov th0,#03ch Mov tl0,#0b0h Setb tr0 Clr sectime Setb ea Setb et0 ret按键扫描程序：anjiansaomiao: Jb key1,anjiansaomiao1 Acall delay5ms Jb key1,key2scan Jnb key1,$ Inc xsstate Cjne a,#4,anjiansaomiaoend Mov xsstate,#0 Ajmp anjiansaomiaoendanjiansaomiao1: jb key2,anjiansaomiao2 acall delay5ms jb key2,anjiansaomiao2 jnb key2,$ setb addflag ajmp anjiansaomiaoendanjiansaomiao2 jb key3,anjiansaomiaoend acall delay5ms jb key3,anjiansaomiaoend jnb key3,$ setb decflaganjiansaomiaoend: ret按键处理程序：Anjianchuli: Mov a,xsstate Cjne a,#0,anjianchuli1 Acall anjianchuliendAnjianchuli1: Mov a,xsstate Cjne a,#1,anjianchuli2 Jnb addflag,anjianchulia Inc hour Clr daddflag Cjnz 24,hour,anjianchuliend Mov hour,#0 Acall anjianchuliendAnjianchulia: jnb decflag,anjianchuliend Dec hour Clr decflag Mov a,decflag Cjnz a,255,anjianchuliend Mov hour，#23 Acall anjianchuliendAnjianchuli2: Mov a,xsstate Cjnz a,2,anjianchuli3 Jnb addflag,anjianchulib Inc min Clr addflag Mov a,min Cjnz a,60,anjianchuliend Mov min,#0 Acall anjianchuliendAnjianchulib: Jnb decflag,anjianchuliendDec minClr decflagMov a,minCjnz a,255,anjianchuliendMov min,#59 Acall anjianchuliendAnjianchuli3: Mov a,xsstate Cjnz a,3,anjianchuliend Jnb addflag,anjianchulic Inc sec Clr addflag Mov a,sec Cjnz a,60,anjianchuliend Mov sec,#0 Acall anjianchuliendAnjianchulic: Jnb decflag,anjianchuliend Dec sec Clr decflag Mov a,sec Cjnz a,255,anjianchuliend Mov sec,#59Anjianchuliend: ret 秒时间处理程序：Shijianchuli: Jnb tf0,shijianchuliend Inc secflag Clr tf0 Mov a,secflag Cjnz a,20,shijianchuliend Clr sectflag Setb sectime Acall shijianchuliendShijianchuliend: ret数据处理程序Shujuchuli:Jnb shujuchuliendInc secClr sectimeMov a,secCjnz a,60,shujuchuliendMov sec,#0Inc minMov a,minCjnz a,60,shujuchuliendClr minInc hourMov a,hourCjnz a,24,shujuchuliendClr hourAcall shujuchuliendShujuchuliend: ret数据拆分Shujuchaifen:Mov a,hourMov b,#10Div abMov hour_h,aMov hour_l,bMov a,minMov b,#10Div abMov min_h,aMov min_l,bMov a,secMov b,#10Div ab