11.txt

阵显示的数字钟 IC卡电表设计 校园一卡通系统的设计与实现 遥控编码电子锁 2G频率计的设计 具有语音功能的超声波测距系统 数字FM接收机 温度远

CH        EQU 30H 
DPCNT     EQU 31H 
DPBUF     EQU 33H 
GDATA     EQU 32H 
ST        BIT P3.0 
OE        BIT P3.1 
EOC       BIT P3.2 
            ORG 00H 
            LJMP START 
            ORG 0BH 
            LJMP T0X 
            ORG 30H 
START:      MOV CH,#0BCH 
            MOV DPCNT,#00H 
            MOV R1,#DPCNT 
            MOV R7,#5 
            MOV A,#10 
            MOV R0,#DPBUF 
LOP:        MOV @R0,A 
            INC R0 
            DJNZ R7,LOP 
            MOV @R0,#00H 
            INC R0 
            MOV @R0,#00H 
            INC R0 
            MOV @R0,#00H 
            MOV TMOD,#01H 
            MOV TH0,#(65536-4000)/256 
            MOV TL0,#(65536-4000) MOD 256 
            SETB TR0 
            SETB ET0 
            SETB EA 
WT:         CLR ST 
            SETB ST 
            CLR ST 
WAIT:       JNB EOC,WAIT 
            SETB OE 
            MOV GDATA,P0 
            CLR OE 
            MOV A,GDATA 
            MOV B,#100 
            DIV AB 
            MOV 33H,A 
            MOV A,B 
            MOV B,#10 
            DIV AB 
            MOV 34H,A 
            MOV 35H,B 
            SJMP WT 
T0X: NOP 
            MOV TH0,#(65536-4000)/256 
            MOV TL0,#(65536-4000) MOD 256 
            MOV DPTR,#DPCD 
            MOV A,DPCNT 
            ADD A,#DPBUF 
            MOV R0,A 
            MOV A,@R0 
            MOVC A,@A+DPTR 
            MOV P1,A 
            MOV DPTR,#DPBT 
            MOV A,DPCNT 
            MOVC A,@A+DPTR 
            MOV P2,A 
            INC DPCNT 
            MOV A,DPCNT 
            CJNE A,#8,NEXT 
            MOV DPCNT,#00H 
NEXT:       RETI 
DPCD:       DB 3FH,06H,5BH,4FH,66H 
            DB 6DH,7DH,07H,7FH,6FH,00H 
DPBT:       DB 0FEH,0FDH,0FBH,0F7H 
            DB 0EFH,0DFH,0BFH,07FH 
                   END