daisr.asm

51系列单片机的汇编程序包

;====== 硬件实验二十  8031串行口实验（一）双机通信（接收） =======
        org 086eH
JG86E:  MOV SP,#60H
        MOV 50H,#7EH
        MOV A,#10H
        MOV R0,#79H
ZEJS:	MOV @R0,A
        INC R0
        CJNE R0,#7EH,ZEJS
        INC A
        MOV @R0,A
        MOV SCON,#50H
        MOV TMOD,#20H
        MOV TL1,#0FDH
        MOV TH1,#0FDH
        SETB TR1
        CLR ET1
        CLR ES
WAINU:  MOV R6,#60H
WASU0:  CALL DIS
        JBC RI,DIS_EC
        DJNZ R6,WASU0
        MOV R6,#28H
        MOV R0,#50H
        MOV A,@R0
        MOV R0,A
        MOV A,@R0
        MOV R7,A
        MOV A,#10H
        MOV @R0,A
WASU1:  CALL DIS
        JBC RI,DIS_Ed
        DJNZ R6,WASU1
        MOV A,R7
        MOV @R0,A
        SJMP WAINU
;------------------------------
DIS_Ed: MOV A,R7
        MOV @R0,A
DIS_EC: mov a,sbuf
        call x3
        db 79h,7eh
        sjmp WAINU
XLE:    ACALL DIS
        ACALL KEY
        MOV R4,A
        MOV R1,#48H
        MOV A,@R1
        MOV R2,A
        INC R1
        MOV A,@R1
        MOV R3,A
        MOV A,R4
        XRL A,R3
        MOV R3,04H
        MOV R4,02H
        JZ X10
        MOV R2,#88H
        MOV R4,#88H
X10:    DEC R4
        MOV A,R4
        XRL A,#82H
        JZ X11
        MOV A,R4
        XRL A,#0EH
        JZ X11
        MOV A,R4
        JZ X12
        MOV R4,#20H
        DEC R2
        SJMP X13
X12:    MOV R4,#0FH
X11:    MOV R2,04H
	    NOP
	    NOP
        MOV R4,03H
X13:    MOV R1,#48H
        MOV A,R2
        MOV @R1,A
        INC R1
        MOV A,R3
        MOV @R1,A
        MOV A,R4
        JB ACC.5,X113
	    JB ACC.4,X113
	    MOV DPTR,#LS3
	    MOVC A,@A+DPTR
X113:   RET
LS3:    DB 07H,04H,08H,05H,09H,06H,0AH
        DB 0BH,01H,00H,02H,0FH,03H,0EH
        DB 0CH,0DH
DIS:    PUSH DPH
        PUSH DPL
        SETB RS1
        MOV R0,#7EH
        MOV R2,#20H
        MOV R3,#00H
        MOV DPTR,#LS0
LS2:    MOV A,@R0
        MOVC A,@A+DPTR
        MOV R1,#0DCH
        MOVX @R1,A
        MOV A,R2
        inc R1
        MOVX @R1,A
LS1:    DJNZ R3,LS1
        CLR C
        RRC A
        MOV R2,A
        DEC R0
        JNZ LS2
        movx @r0,a
	    dec r0
	    cpl a
	    movx @r0,a
        CLR RS1
        POP DPL
        POP DPH
        RET
;----------------------------
LS0:    DB 0C0H,0F9H,0A4H,0B0H,99H,92H
        DB 82H,0F8H,80H,90H,88H,83H,0C6H
        DB 0A1H,86H,8EH,0FFH,0CH,89H,7FH,0BFH
KEY:    SETB RS1
        MOV R2,#0FEH
        MOV R3,#08H
        MOV R0,#00H
LP1:    MOV R1,#0DDH
        MOV A,R2
        MOVX @R1,A
        RL A
        MOV R2,A
        inc r1
        MOVX A,@R1
        CPL A
        ANL A,#0FH
        JNZ LP0
        INC R0
        DJNZ R3,LP1
XP33:   MOV A,#20H
XP3:    mov r2,a
	    clr a
	    mov r1,#0ddh
	    movx @r1,a
	    mov a,r2
        CLR RS1
        RET
;------------------------
LP0:    CPL A
        JB ACC.0,XP0
        MOV A,#00H
        SJMP LPP
XP0:    JB ACC.1,XP1
        MOV A,#08H
        SJMP LPP
XP1:    JB ACC.2,XP2
        MOV A,#10H
        SJMP LPP
XP2:    JB ACC.3,XP33
        MOV A,#18H
LPP:    ADD A,R0
        sjmp xp3
;--------------------------------
LEDP:   MOV 50H,#7EH
	    MOV A,#10H
	    MOV R0,#79H
LEDS:	MOV @R0,A
	    INC R0
	    CJNE R0,#7EH,LEDS
	    INC A
	    MOV @R0,A
	    RET
;--------------------------------
X3:     MOV R4,A
        MOV R0,#50H
        MOV A,@R0
        MOV R1,A
        MOV A,R4
        MOV @R1,A
        CLR A
        POP DPH
        POP DPL
        MOVC A,@A+DPTR
        INC DPTR
        CJNE A,01H,X30
        dec r1
        clr a
        MOVC A,@A+DPTR
X31:    MOV @R0,A
        INC DPTR
        PUSH DPL
        PUSH DPH
        RET
;---------------------------------
X30:    DEC R1
        MOV A,R1
        SJMP X31
;--------------------------
X2:     MOV R6,#50H
X0:     ACALL XLE
        JNB ACC.5,XX0
        DJNZ R6,X0
        MOV R6,#20H
        MOV R0,#50H
        MOV A,@R0
        MOV R0,A
        MOV A,@R0
        MOV R7,A
        MOV A,#10H
        MOV @R0,A
X1:     ACALL XLE
        JNB ACC.5,XX1
        DJNZ R6,X1
        MOV A,R7
        MOV @R0,A
        SJMP X2
XX1:    MOV R6,A
        MOV A,R7
        MOV @R0,A
        MOV A,R6
XX0:    RET
;------------------------------
        END