anyone??please help me...check this assembly code..

[chomix05]

RB0 EQU 000H ; Select Register Bank 0
RB1 EQU 008H ; Select Register Bank 1 ...poke to PSW to use


DIS_A EQU P0.2
DIS_B EQU P0.3
DIS_C EQU P0.4
;DIS_D EQU P0.6
DIS_D EQU P2.2
DIS_E EQU P0.5
DIS_F EQU P0.1
DIS_G EQU P0.0

DIS1 EQU P0.7
;DIS2 EQU P2.6
DIS2 EQU P0.6

LIGHT EQU P2.7

SEN1 EQU P1.0
SEN2 EQU P1.1
test EQU P1.2
test2 EQU P1.3


UP BIT 0H
DWN BIT 1H
COUNT EQU 30H
SPEED EQU 31H
VALUE_1 EQU 32H
VALUE_2 EQU 33H
NUMB1 EQU 34H
NUMB2 EQU 35H
NUMB3 EQU 36H
VISITOR EQU 37H

STACK EQU 50H


;---------==========----------==========---------=========---------
; PROCESSOR INTERRUPT AND RESET VECTORS
;---------==========----------==========---------=========---------

ORG 00H ; Reset
JMP MAIN
ORG 000BH ;Timer Interrupt0
JMP REFRESH

;---------==========----------==========---------=========---------
; Main routine. Program execution starts here.
;---------==========----------==========---------=========---------
MAIN:
MOV PSW,#RB0 ; Select register bank 0
MOV SP,STACK
CLR LIGHT
CLR test2
CLR DIS_D
MOV VISITOR,#00H
MOV SPEED,#00H
MOV COUNT,#00H
MOV VALUE_1,#15H
MOV VALUE_2,#15H
CLR DIS1
CLR DIS2

MOV TMOD,#01H ;enable timer0 for scanning
MOV TL0,#00H
MOV TH0,#0FFH
SETB ET0
SETB EA
SETB TR0 ;Start the Timer


MOV VALUE_1,#00H
MOV VALUE_2,#00H
SETB SEN1
SETB SEN2
UPP: JNB SEN1,UP_COUNT
CPL test
JB SEN2,UPP

MOV A,VISITOR ;DOWN COUNTING
CJNE A,#00,UAPS
CLR LIGHT
JNB SEN2,$
CALL DELAY
JB SEN1,$
CALL DELAY
JNB SEN1,$
CALL DELAY
AJMP UPP
UAPS: DEC VISITOR
MOV A,VISITOR
CJNE A,#00,UAPA
CLR LIGHT
UAPA: MOV R2,VISITOR
MOV R1,#00H
MOV R3,#00D
MOV R4,#00D
MOV R5,#00D
MOV R6,#00D
MOV R7,#00D
CALL HEX2BCD
MOV VALUE_2,R3
MOV VALUE_1,R4
JNB SEN2,$
CALL DELAY
JB SEN1,$
CALL DELAY
JNB SEN1,$
CALL DELAY
AJMP UPP

UP_COUNT:
SETB LIGHT
INC VISITOR
MOV A,VISITOR
CJNE A,#99,UPPS
MOV VISITOR,#98
JNB SEN1,$
CALL DELAY
JB SEN2,$
CALL DELAY
JNB SEN2,$
CALL DELAY
AJMP UPP
UPPS: MOV R2,VISITOR
MOV R1,#00H
MOV R3,#00D
MOV R4,#00D
MOV R5,#00D
MOV R6,#00D
MOV R7,#00D
CALL HEX2BCD
MOV VALUE_2,R3
MOV VALUE_1,R4
JNB SEN1,$
CALL DELAY
JB SEN2,$
CALL DELAY
JNB SEN2,$
CALL DELAY
AJMP UPP


;**************************************************
HEX2BCD:
MOV B,#10D
MOV A,R2
DIV AB
MOV R3,B ;
MOV B,#10 ; R7,R6,R5,R4,R3
DIV AB
MOV R4,B
MOV R5,A
CJNE R1,#0H,HIGH_BYTE ; CHECK FOR HIGH BYTE
SJMP ENDD

HIGH_BYTE:
MOV A,#6
ADD A,R3
MOV B,#10
DIV AB
MOV R3,B
ADD A,#5
ADD A,R4
MOV B,#10
DIV AB
MOV R4,B
ADD A,#2
ADD A,R5
MOV B,#10
DIV AB
MOV R5,B
CJNE R6,#00D,ADD_IT
SJMP CONTINUE
ADD_IT:
ADD A,R6
CONTINUE:
MOV R6,A
DJNZ R1,HIGH_BYTE
MOV B, #10D
MOV A,R6
DIV AB
MOV R6,B
MOV R7,A
ENDD: RET
;***************************************************************************
;&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
; 7 SEGMENT DISPLAY ROUTINE
;&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
DISP:
MOV R2,SPEED
CJNE R2,#00H,AAS1
CLR DIS_A
CLR DIS_B
CLR DIS_C
CLR DIS_D
CLR DIS_E
CLR DIS_F
SETB DIS_G
RET
AAS1: CJNE R2,#01H,AS2
CLR DIS_B
CLR DIS_C
SETB DIS_A
SETB DIS_D
SETB DIS_E
SETB DIS_F
SETB DIS_G
RET
AS2: CJNE R2,#02H,AS3
CLR DIS_A
CLR DIS_B
CLR DIS_D
CLR DIS_E
CLR DIS_G
SETB DIS_C
SETB DIS_F
RET
AS3: CJNE R2,#03H,AS4
CLR DIS_A
CLR DIS_B
CLR DIS_C
CLR DIS_D
CLR DIS_G
SETB DIS_E
SETB DIS_F
RET
AS4: CJNE R2,#04H,AS5
CLR DIS_B
CLR DIS_C
CLR DIS_F
CLR DIS_G
SETB DIS_A
SETB DIS_D
SETB DIS_E
RET
AS5: CJNE R2,#05H,AS6
CLR DIS_A
CLR DIS_C
CLR DIS_D
CLR DIS_F
CLR DIS_G
SETB DIS_B
SETB DIS_E
RET
AS6: CJNE R2,#06H,AS7
CLR DIS_A
CLR DIS_C
CLR DIS_D
CLR DIS_E
CLR DIS_F
CLR DIS_G
SETB DIS_B
RET
AS7: CJNE R2,#07H,AS8
CLR DIS_A
CLR DIS_B
CLR DIS_C
SETB DIS_D
SETB DIS_E
SETB DIS_F
SETB DIS_G
RET
AS8: CJNE R2,#08H,AS9
CLR DIS_A
CLR DIS_B
CLR DIS_C
CLR DIS_D
CLR DIS_E
CLR DIS_F
CLR DIS_G
RET
AS9: CJNE R2,#09H,AS10
CLR DIS_A
CLR DIS_B
CLR DIS_C
CLR DIS_D
CLR DIS_F
CLR DIS_G
SETB DIS_E
RET
AS10: CJNE R2,#15H,AS11 ;symbol for -
SETB DIS_A
SETB DIS_B
SETB DIS_C
SETB DIS_D
SETB DIS_E
SETB DIS_F
CLR DIS_G
RET
AS11: CJNE R2,#16H,AS12 ;switch off all disp
SETB DIS_A
SETB DIS_B
SETB DIS_C
SETB DIS_D
SETB DIS_E
SETB DIS_F
SETB DIS_G
RET
AS12: MOV SPEED,#00H
AJMP DISP
;**********************************************************
; INTRRUPT ROUTINE TO REFRESH THE DISPLAY
;**********************************************************
REFRESH:
PUSH PSW ; save current registerset
MOV PSW,#RB1
PUSH ACC
INC COUNT
MOV R4,COUNT
QA1: CJNE R4,#01H,QA2
MOV SPEED,VALUE_1
CLR DIS2
SETB DIS1
CALL DISP
AJMP DOWN
QA2: CJNE R4,#02H,QA3
MOV SPEED,VALUE_2
CLR DIS1
SETB DIS2
CALL DISP
AJMP DOWN
QA3: MOV COUNT,#01H
MOV R4,COUNT
AJMP QA1
DOWN: MOV TL0,#0FFH
MOV TH0,#0F0H
POP ACC
POP PSW
RETI
;**********************************************************
DELAY:
MOV R1,#4FH
REP2: MOV R2,#0FFH
REP1: NOP
DJNZ R2,REP1
DJNZ R1,REP2
RET
;**********************************************************




END



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