7.sdi

数字钟

,,,                ORG 0
0000,79 00,START,START:          MOV R1,#00H
0002,E9,NEXT,NEXT:           MOV A,R1
0003,90 00 20,,                MOV DPTR,#TABLE
0006,93,,                MOVC A,@A+DPTR
0007,F5 80,,                MOV P0,A
0009,12 00 13,,                LCALL DELAY
000C,09,,                INC R1
000D,B9 0A F2,,                CJNE R1,#10,NEXT
0010,02 00 00,,                LJMP START
0013,7D 14,DELAY,DELAY:          MOV R5,#20
0015,7E 14,D2,D2:             MOV R6,#20
0017,7F F8,D1,D1:             MOV R7,#248
0019,DF FE,,                DJNZ R7,$
001B,DE FA,,                DJNZ R6,D1
001D,DD F6,,                DJNZ R5,D2
001F,22,,                RET
0020,3F 06 5B 4F,TABLE,TABLE:          DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH
,,,
000E,,,end