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1、;22H~24H存时钟时间;32H~34H存闹钟时间；42H~44H存秒表吋I'可;MON用于选择时钟/闹钟调时；30H作为标志;RST用于选择时、分、秒;LAST调时减1,NEXT调时加1；EXEC用于开始秒表计吋；40H作为标志CM1EQU8001HCM2EQU8002HCM4EQU8004HORG0000HUMPMAINORG000BHLJMPSEROORGOO1BHUMPSERIORG0030HMAIN:MOVSP,#70HMOV32H,#OOHMOV33H,#OOHMOV34H,#00H；设置闹钟初始值MOV42H,#00HMOV43H,#
2、00HMOV44H,#00H；设置秒表初始值MOV26H?#11H；26H作为标志（h,min,s）MOV3OH,#OOH；30H作为时钟（0）与闹钟⑴的标志MOVR4,#0C8H;设200次循环MOVTMOD,#20H；T0方式0,T2方式2MOVTH0,#63H;5msMOVTL0,#10HMOVTH1,#9CHMOVTL1Z#9CH;100MSSETBPl.lSETBEASETBETOSETBET1SETBTROMOVA,22H；检查吋钟格式是否正确CLRCSUBBA,#24HJNCINITMOVA,23HCLRCSUBBA,#60HJNCIN
3、ITMOVA,24HCLRCSUBBA,#60HJNCINITUMPLOADINIT:MOV22H,#12H；时钟格式不正确时进行初始化，为12:00:00MOV23H,#00HMOV24H,#00HLOAD:CLRRSOCLRRSI；第一组工作寄存器MOVA,40HJZS1;40H为1时，42H~44H（秒表）送显示缓冲区MOVR0,#42HUMPNOADSI:MOVA,30HJZSOAD;30H为0时，22H~24H（时钟）送显示缓冲区MOVR0,#32H;30H为［时，32H~34H（闹钟）送显示缓冲区UMPNOADSOAD:MOVR0,#22
4、HNOAD:MOVRl,#60H；将对应的时间送入显示缓冲区60H~65HMOVR5Z#O3HL00P1:MOVA,@ROANLA,#OFOHSWAPAMOV@R1,AMOVA,3OHINCRlJZC4MOVA,@ROLCALLNJ；闹钟调用NJANLA,#OFHUMPSENDMOV@R1,AC4:LCALLAJ；时钟调用AJINCRlUMPSENDINCROCl:MOVA,25HDJNZR5,LOOP1CJNEA,#01H,C2LCALLDPILCALLLAST；调用显示子程序；键值为LAST时，调用减1运算MOVA,32HUMPSENDCJNEA
5、,22H,SWEEPC2:MOVA,25HMOVA,33HJNZSENDCJNEA,23H,SWEEPLCALLNEXTSETBTR1;键值为NEXT时，调用加1运算；时钟与闹钟的时和分相等时开定时器1SEND:MOV25H,#99HSWEEP:LCALLSEARCHCLRRSOMOVA,25HCLRRSI；25H存键号UMPLOADCJNEA,#04H,C6•/MOVA,40H•9•判断时钟h/min/s标志位26HADDA,#01H•9MOVB,#02HAJ:SETBRSODIVAB;换工作寄存器MOV40H,BCLRRSI；键值为EXEC时，处
6、理40H标志位MOVA,26HMOV42H,#00HCJNEAZ#11H,AJ1MOV43H,#00HMOVR1,#21HMOV44H,#00HSETBTRO；秒表赋初值UMPARETLJMPSEND;R1存对应时钟位C6:CJNEA,#O2H,C3AJ1:CLRTROMOVA,3OHCJNEA,#22H,AJ2ADDA,#O1HMOVR1,#22HMOVB,#02HAJ2:CJNEA,#44H,AJ3DIVABMOVR1Z#23HMOV3OH,BAJ3:CJNEA,#88H,ARET；键值为MON吋，处理30H标志位MOVR1,#24HUMPSEN
7、DARET:RETC3:CJNEAZ#O3H,C1■/MOVA,26H•9•判断闹钟h/min/s标志位26HRLA•9;键值为RST时，处理26H标志位NJ:SETBRSOMOV26H,ACLRRSI;第1组工作寄存器MOVA,26HCJNEAZ#11H,NJ1MOVR1,#31HUMPARET;R1存对应时钟位NJ1:CJNEA,#22H,NJ2NJ2:MOVR1,#32HCJNEA,#44H,NJ3NJ3:MOVR1,#33HCJNEA,#88H,NJRETNJRET:■MOVR1,#34HRET9■f一减1运算LAST:MOVA,3OHJZL
8、AO;30H为0时,时钟进行减1运算UMPNA0;30H为1时，闹钟进行减1运算LAO:LCALLAJCJN
