hz.asm

学习单片机一个简单程序和硬件的开发

        ORG 0000H
        MOV DPTR,#WORDTAB
        MOV R1,#0
        MOV R2,#0
        MOV R3,#16
        MOV R4,#100
        MOV R5,#4
   LOOP:SETB P1.4
        MOV A,R1
        MOVC A,@A+DPTR
        CPL A
        MOV P0,A
        INC R1
        MOV A,R1
        MOVC A,@A+DPTR
        CPL A
        MOV P2,A
        INC R1
        MOV P1,R2
        INC R2
        LCALL DELAY
        DJNZ R3,LOOP
        DJNZ R4,K1
        MOV R4,#100
        SJMP K2
     K1:CLR C
        MOV A,R1
        SUBB A,#32
        MOV R1,A
        MOV R2,#0
        MOV R3,#16
        SJMP LOOP
     K2:DJNZ R5,K3
        MOV R1,#0
        MOV R2,#0
        MOV R3,#16
        MOV R5,#4
        SJMP LOOP
     K3:MOV R3,#16
        MOV R2,#0
        SJMP LOOP

  DELAY:MOV R6,#1
   DEL1:MOV R7,#125
   DEL2:NOP
        NOP
        DJNZ R7,DEL2
        DJNZ R6,DEL1
        RET
WORDTAB:DB 00H,00H,00H,02H,18H,03H,14H,06H,10H,08H,10H,30H,17H,0C0H,0F0H,30H
        DB 08H,0CH,04H,02H,3CH,31H,23H,41H,20H,80H,23H,60H,2CH,10H,20H,08H
        DB 00H,00H,20H,04H,7FH,0C6H,20H,22H,20H,42H,20H,02H,3FH,0FEH,41H,02H
        DB 40H,82H,20H,42H,3FH,0E2H,00H,04H,13H,0F8H,22H,04H,42H,02H,02H,00H
        DB 00H,00H,02H,0EH,26H,02H,62H,02H,12H,02H,0AH,02H,03H,0FCH,02H,00H
        DB 0FEH,00H,02H,00H,03H,0E0H,1AH,18H,22H,04H,42H,02H,02H,01H,02H,00H
        DB 00H,00H,10H,80H,31H,0FFH,10H,82H,10H,82H,13H,82H,12H,0FEH,0D4H,82H
        DB 30H,82H,08H,82H,04H,0FFH,02H,00H,0FFH,0FFH,00H,00H,3FH,0F8H,00H,00H
        END