INITLCD4: CLR LCD_RS CLR LCD_E MOV R4,#CONFIG CALL WRLCDCOM4 MOV R4,#ONDSP CALL WRLCDCOM4 MOV R4,#ENTRYMODE CALL WRLCDCOM4 MOV R4,#CLRDSP CALL WRLCDCOM4 RET RESETLCD4: CLR LCD_RS CLR LCD_E CLR LCD_DB7 CLR LCD_DB6 SETB LCD_DB5 SETB LCD_DB4 SETB LCD_E CLR LCD_E MOV A,#4 CALL MDELAY SETB LCD_E CLR LCD_E MOV A,#1 CALL MDELAY SETB LCD_E CLR LCD_E MOV A,#1 CALL MDELAY CLR LCD_DB4 SETB LCD_E CLR LCD_E MOV A,#1 CALL MDELAY MOV R4,#CONFIG CALL WRLCDCOM4 MOV R4,#08H CALL WRLCDCOM4 MOV R4,#1 CALL WRLCDCOM4 MOV R4,#ENTRYMODE ACALL WRLCDCOM4 JMP INITLCD4 WRLCDCOM4: CLR LCD_E CLR LCD_RS PUSH ACC MOV A,R4 MOV C,ACC.4 MOV LCD_DB4,C MOV C,ACC.5 MOV LCD_DB5,C MOV C,ACC.6 MOV LCD_DB6,C MOV C,ACC.7 MOV LCD_DB7,C SETB LCD_E CLR LCD_E MOV C,ACC.0 MOV LCD_DB4,C MOV C,ACC.1 MOV LCD_DB5,C MOV C,ACC.2 MOV LCD_DB6,C MOV C,ACC.3 MOV LCD_DB7,C CLR LCD_E SETB LCD_E CLR LCD_E CALL MADELAY POP ACC RET WRLCDDATA: CLR LCD_E SETB LCD_RS PUSH ACC MOV A,R4 MOV C,ACC.4 MOV LCD_DB4,C MOV C,ACC.5 MOV LCD_DB5,C MOV C,ACC.6 MOV LCD_DB6,C MOV C,ACC.7 MOV LCD_DB7,C SETB LCD_E CLR LCD_E MOV C,ACC.0 MOV LCD_DB4,C MOV C,ACC.1 MOV LCD_DB5,C MOV C,ACC.2 MOV LCD_DB6,C MOV C,ACC.3 MOV LCD_DB7,C CLR LCD_E SETB LCD_E CLR LCD_E NOP NOP POP ACC RET LCD_MSG: CLR A MOVC A,@A+DPTR INC DPTR JZ LCD_MSG9 CJNE A,#01H,LCD_MSG1 MOV R4,A CALL WRLCDCOM4 JMP LCD_MSG LCD_MSG1: CJNE A,0FFH,FLL MOV R4,A CALL WRLCDDATA JMP LCD_MSG FLL: CJNE A,#080H,$+3 JC LCD_MSG_DATA MOV R4,A CALL WRLCDCOM4 JMP LCD_MSG LCD_MSG_DATA: MOV R4,A CALL WRLCDDATA JMP LCD_MSG LCD_MSG9:
RET MDELAY: PUSH ACC MOV A,0A6H MD_OLP: INC A NOP NOP NOP NOP NOP NOP NOP NOP JNZ MD_OLP NOP POP ACC RET MADELAY: PUSH ACC MOV A,036H MAD_OLP: INC A NOP NOP NOP NOP NOP NOP NOP NOP JNZ MAD_OLP NOP POP ACC RET DELAYS: MOV R6,#00H MOV R5,#04H LOOPB: INC R6 ACALL DELAYMS HERE: MOV A,R6 JNZ LOOPB DEC R5 MOV A,R5 JNZ LOOPB RET DELAYMS: ; MOV R7,#00H LOOPA: INC R7 MOV A,R7 CJNE A,0FFH,LOOPA RET OUTS: MOV R2,#8 SETB SDA1 SETB SCL1 NOP NOP NOP CLR SDA1 NOP NOP NOP CLR SCL1 OTSLP: RLC A JNC BITLS SETB SDA1 JMP OTSL1 BITLS: CLR SDA1 OTSL1: SETB SCL1 NOP NOP NOP
CLR SCL1 DJNZ R2,OTSLP SETB SDA1 NOP
SETB SCL1 NOP NOP NOP CLR SCL1 RET OUT: MOV R2,#8 OTLP: RLC A JNC BITL SETB SDA1 JMP OTL1 BITL: CLR SDA1 OTL1: SETB SCL1 NOP NOP NOP
CLR SCL1 DJNZ R2,OTLP SETB SDA1 NOP
SETB SCL1 NOP NOP NOP
CLR SCL1 RET STOP: CLR SDA1 NOP NOP NOP
SETB SDA1 RET CREAD: MOV A,#RDCMD CALL OUTS CALL IN MOV R1,A CALL STOP RET IN: MOV R2,#8 SETB SDA1 INLP: CLR SCL1 NOP NOP NOP NOP
SETB SCL1 CLR C JNB SDA1,INL1 CPL C INL1: RLC A DJNZ R2,INLP CLR SCL1 RET ACKTST: MOV A,#WTCMD MOV R2,#8 CLR SDA1 NOP NOP NOP
CLR SCL1 AKTLP: RLC A JNC AKTLS SETB SDA1 JMP AKTL1 AKTLS: CLR SDA1 AKTL1: SETB SCL1 NOP NOP NOP
CLR SCL1 DJNZ R2,AKTLP SETB SDA1 NOP
SETB SDA1 NOP
JNB SDA1,EXIT JMP ACKTST EXIT: CLR SCL1 CLR SDA1 NOP NOP NOP
SETB SCL1 NOP NOP SETB SDA1 RET END
This 3 threads contains my program sir please help to clearthe warningL4:Data Space Memory Overlap From 0000H to 0033H.. Please help me sir