mod3.asm

单片机AT89S52与计算机进行串行通讯,通过232进行,可以不停向PC发送

        org 0000h       ;MUSIC
        LJMP START
        ORG 000BH
        LJMP INTT0
START:  MOV SP,#50H
        MOV TH0,#0D8H
        MOV TL0,#0EFH
        MOV TMOD,#01H
        MOV IE,#82H
MUSIC0: NOP
        MOV DPTR,#DAT
        MOV 20H,#00H
MUSIC1: NOP
        CLR A
        MOVC A,@A+DPTR
        JZ END0
        CJNE A,#0FFH,MUSIC5
        LJMP MUSIC3
MUSIC5: NOP
        MOV R6,A
        INC DPTR
        MOV A,#0
        MOVC A,@A+DPTR
        MOV R7,A
        SETB TR0
MUSIC2: NOP
        CPL P2.5
        MOV A,R6
        MOV R3,A
        LCALL DEL
        MOV A,R7
        CJNE A,20H,MUSIC2
        MOV 20H,#00H
        INC DPTR
        LJMP MUSIC1
MUSIC3: NOP
        CLR TR0
        MOV R2,#0DH
MUSIC4: NOP
        MOV R3,#0FFH
        LCALL DEL
        DJNZ R2,MUSIC4
        INC DPTR
        LJMP MUSIC1
END0:   NOP
        MOV R2,#0FFH
MUSIC6: MOV R3,#00H
        LCALL DEL
        DJNZ R2,MUSIC6
        LJMP MUSIC0
DEL:    NOP
DEL3:   MOV R4,#02H
DEL4:   NOP
        DJNZ R4,DEL4
        NOP
        DJNZ R3,DEL3
        RET
        NOP
INTT0:  INC 20H
        MOV TH0,#0D8H
        MOV TL0,#0EFH
        RETI
DAT:
DB 18H,30H,1CH,10H
DB 20H,40H,1CH,10H
DB 18H,10H,20H,10H
DB 1CH,10H,18H,40H
DB 1CH,20H,20H,20H
DB 1CH,20H,18H,20H
DB 20H,80H,0FFH,20H
DB 30H,1CH,10H,18H
DB 20H,15H,20H,1CH
DB 20H,20H,20H,26H
DB 40H,20H,20H,2BH
DB 20H,26H,20H,20H
DB 20H,30H,80H,0FFH
DB 20H,20H,1CH,10H
DB 18H,10H,20H,20H
DB 26H,20H,2BH,20H
DB 30H,20H,2BH,40H
DB 20H,20H,1CH,10H
DB 18H,10H,20H,20H
DB 26H,20H,2BH,20H
DB 30H,20H,2BH,40H
DB 20H,30H,1CH,10H
DB 18H,20H,15H,20H
DB 1CH,20H,20H,20H
DB 26H,40H,20H,20H

DB 2BH,20H,26H,20H
DB 20H,20H,30H,80H
DB 20H,30H,1CH,10H
DB 20H,10H,1CH,10H
DB 20H,20H,26H,20H
DB 2BH,20H,30H,20H
DB 2BH,40H,20H,15H
DB 1FH,05H,20H,10H
DB 1CH,10H,20H,20H
DB 26H,20H,2BH,20H
DB 30H,20H,2BH,40H
DB 20H,30H,1CH,10H
DB 18H,20H,15H,20H
DB 1CH,20H,20H,20H
DB 26H,40H,20H,20H
DB 2BH,20H,26H,20H
DB 20H,20H,30H,30H
DB 20H,30H,1CH,10H
DB 18H,40H,1CH,20H
DB 20H,20H,26H,40H
DB 13H,60H,18H,20H
DB 15H,40H,13H,40H
DB 18H,80H,00H
END