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Dawny said:Yea most likely I do have access to the source code but at the moment editing would be far beyond what I can do...
Dawn
;********************************************
; PFC-50 POCKET FREQUENCY COUNTER
;********************************************
;
;WATCHDOG DISABLED
;
;**********************************************************
LIST P=16F84A
#include <p16F84A.inc>
__CONFIG _XT_OSC & _WDT_OFF & _PWRTE_ON & _CP_ALL
;**********************************************************
RS EQU 2H
RW EQU 1H
E EQU 0H
O EQU 7H
;
COUNT1 EQU 2CH
COUNT2 EQU 2DH
IN_REG EQU 2EH
ADDCNT EQU 2FH
GATE EQU 0CH
CNT1 EQU 0DH
CNT2 EQU 0EH
CNT3 EQU 0FH
CALC1 EQU 10H
CALC2 EQU 11H
CALC3 EQU 12H
SUM1 EQU 13H
SUM2 EQU 14H
SUM3 EQU 15H
RTCC2 EQU 16H
TEMP1 EQU 17H
TEMP2 EQU 18H
COUNT3 EQU 19H
COUNT4 EQU 1AH
;-----------------------------------------------
;-----------------------------------------------
;-----------------------------------------------
ORG 0
GOTO START
;
INT_DEL:
MOVLW 0X05 ;DELAY 5.000 MS (4 MHZ CLOCK)
MOVWF COUNT1
D1 MOVLW 0XA5
MOVWF COUNT2
D2 DECFSZ COUNT2,F
GOTO D2
DECFSZ COUNT1,F
GOTO D1
RETLW 0X00
;
MIRROR:
CLRF TEMP2
MOVWF TEMP1
BTFSC TEMP1,0
BSF TEMP2,7
BTFSC TEMP1,1
BSF TEMP2,6
BTFSC TEMP1,2
BSF TEMP2,5
BTFSC TEMP1,3
BSF TEMP2,4
BTFSC TEMP1,4
BSF TEMP2,3
BTFSC TEMP1,5
BSF TEMP2,2
BTFSC TEMP1,6
BSF TEMP2,1
BTFSC TEMP1,7
BSF TEMP2,0
MOVF TEMP2,W
RETURN
;
LCD_OUT:
CALL MIRROR
MOVWF PORTB ;LOAD DATA INTO PORTB
BSF STATUS,RP0
MOVLW B'00000000' ;DEFINE PORTB AS OUTPUT
MOVWF TRISB
BCF STATUS,RP0
BSF PORTA,RS ;RS = DATA
BCF PORTA,RW ;R/W = WRITE
BSF PORTA,E ;TOGGLE ENABLE
BCF PORTA,E
;
BSF STATUS,RP0
MOVLW B'11111111' ;DEFINE PORTB AS INPUT
MOVWF TRISB
BCF STATUS,RP0
;
BCF PORTA,RS ;RS = INSTRUCTION
BSF PORTA,RW ;R/W = READ
BSF PORTA,E ;ENABLE HIGH
MOVF PORTB,W ;GET ADDRESS COUNTER
CALL MIRROR
MOVWF ADDCNT
BSF ADDCNT,7
BCF PORTA,E ;ENABLE LOW
OUT1 BSF PORTA,E ;ENABLE HIGH
BTFSS PORTB,0 ;TEST BUSY FLAG
GOTO OUT2
BCF PORTA,E ;ENABLE LOW
GOTO OUT1
OUT2 BCF PORTA,E ;ENABLE LOW
GOTO SHIFT
;
INST:
CALL MIRROR
MOVWF PORTB ;LOAD INSTRUCTION INTO PORTB
BSF STATUS,RP0
MOVLW B'00000000' ;DEFINE PORTB AS OUTPUT
MOVWF TRISB
BCF STATUS,RP0
BCF PORTA,RS ;RS = INSTRUCTION
BCF PORTA,RW ;R/W = WRITE
BSF PORTA,E ;TOGGLE ENABLE
BCF PORTA,E
BSF STATUS,RP0
MOVLW B'11111111' ;DEFINE PORTB AS INPUT
MOVWF TRISB
BCF STATUS,RP0
BSF PORTA,RW ;R/W = READ
INST1:
BSF PORTA,E ;ENABLE HIGH
BTFSS PORTB,0 ;TEST BUSY FLAG
GOTO INST2
BCF PORTA,E ;ENABLE LOW
GOTO INST1
INST2:
BCF PORTA,E ;ENABLE LOW
RETLW 0X00
;
;-----------------------------------
; LCD 16X1
SHIFT:
BTFSS ADDCNT,0 ;SHIFT TO OPPOSITE SIDE OF DISPLAY?
RETLW 0X00
BTFSS ADDCNT,1
RETLW 0X00
BTFSS ADDCNT,2
RETLW 0X00
MOVLW 0XC0
MOVF ADDCNT,W
MOVLW 0XC0
GOTO INST
;------------------------------------
SUB BCF STATUS,O ;CLEAR OVERFLOW BIT
MOVF CALC1,W ;SUBTRACT CALC1 FROM CNT1
SUBWF CNT1 ,F
BTFSC STATUS,C
GOTO SB1
MOVLW 0X01 ;BORROW FROM CNT2 IF OVERFLOW
SUBWF CNT2 ,F
BTFSC STATUS,C
GOTO SB1
SUBWF CNT3 ,F ;BORROW FROM CNT3 IF CNT2 OVERFLOW
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
SB1 MOVF CALC2,W ;SUBTRACT CALC2 FROM CNT2
SUBWF CNT2 ,F
BTFSC STATUS,C
GOTO SB2
MOVLW 0X01 ;BORROW FROM CNT3 IF CNT2 OVERFLOW
SUBWF CNT3 ,F
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
SB2 MOVF CALC3,W ;SUBTRACT CALC3 FROM CNT3
SUBWF CNT3 ,F
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
RETLW 0X00
;-----------------------------------
ADD MOVF CALC1,W ;ADD CALC1 TO CNT1
ADDWF CNT1 ,F
BTFSS STATUS,C
GOTO AD1
INCFSZ CNT2 ,F ;ADD TO CNT2 IF CNT1 OVERFLOW
GOTO AD1
INCF CNT3 ,F ;ADD TO CNT3 IF CNT2 OVERFLOW
AD1 MOVF CALC2,W ;ADD CALC2 TO CNT2
ADDWF CNT2 ,F
BTFSC STATUS,C
INCF CNT3 ,F ;ADD TO CNT3 IF CNT2 OVERFLOW
MOVF CALC3,W ;ADD CALC3 TO CNT3
ADDWF CNT3 ,F
RETLW 0X00
;-----------------------------------
CNVT MOVLW 0X07 ;7 DIGITS IN DISPLAY
MOVWF COUNT1
MOVLW 0X19 ;SET FSR FOR MSB IN DISPLAY
MOVWF FSR
MOVLW 0X2F ;ONE LESS THAT ASCII "0"
CNVT0:
MOVWF INDF
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO CNVT0
MOVLW 0X0F ;LOAD "1,000,000" IN CALC1-3
MOVWF CALC3
MOVLW 0X42
MOVWF CALC2
MOVLW 0X40
MOVWF CALC1
CNVT1:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 19 ,F ;INCREMENT 1,000,000'S REGISTER
MOVLW 0X3A
XORWF 19,W
BTFSC STATUS,Z
GOTO OVERFLOW
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT1
CALL ADD ;ADD BACK LAST NUMBER
MOVLW 0X01 ;LOAD "100,000" IN CALC1-3
MOVWF CALC3
MOVLW 0X86
MOVWF CALC2
MOVLW 0XA0
MOVWF CALC1
CNVT2:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1A ,F ;INCREMENT 100,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT2
CALL ADD ;ADD BACK LAST NUMBER
CLRF CALC3 ;LOAD "10,000" IN CALC1-3
MOVLW 0X27
MOVWF CALC2
MOVLW 0X10
MOVWF CALC1
CNVT3:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1B ,F ;INCREMENT 10,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT3
CALL ADD ;ADD BACK LAST NUMBER
MOVLW 0X03 ;LOAD "1,000" IN CALC1-3
MOVWF CALC2
MOVLW 0XE8
MOVWF CALC1
CNVT4:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1C ,F ;INCREMENT 1,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT4
CALL ADD ;ADD BACK LAST NUMBER
CLRF CALC2 ;LOAD "100" IN CALC1-3
MOVLW 0X64
MOVWF CALC1
CNVT5:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1D ,F ;INCREMENT 100'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT5
CALL ADD ;ADD BACK NUMBER
MOVLW 0X0A ;LOAD "10" IN CALC1-3
MOVWF CALC1
CNVT6:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1E ,F ;INCREMENT 10'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT6
CALL ADD ;ADD BACK LAST NUMBER
MOVF CNT1,W ;PUT REMAINDFER IN 1'S REGISTER
ADDWF 1F ,F
INCF 1F ,F
RETLW 0X00
;-----------------------------------
COUNT:
BSF STATUS,RP0
MOVLW B'00110111' ;TMR0 = EXT, 1/256
MOVWF OPTION_REG
MOVLW B'00010000' ;DEFINE PORTA AS OUTPUT
MOVWF TRISA
BCF STATUS,RP0
BCF PORTA,3
BCF PORTA,2
CLRF CNT3
CLRF TMR0
CLRF RTCC2
BSF PORTA,2 ;TOGGLE TMR0 PIN
BCF PORTA,2
MOVF GATE,W ;GET GATE TIME
MOVWF COUNT1
BSF PORTA,3 ;START COUNT
FR4 MOVLW 0XFA
MOVWF COUNT2
GOTO FR6
FR5 NOP
NOP
NOP
NOP
NOP
NOP
FR6 MOVF TMR0,W ;TEST FOR TMR0 ROLLOVER (12)
SUBWF RTCC2 ,F
BTFSS STATUS,Z
GOTO FR7
NOP
GOTO FR8
FR7 BTFSC STATUS,C
INCF CNT3 ,F
FR8 MOVWF RTCC2
NOP
NOP
NOP
DECFSZ COUNT2 ,F
GOTO FR5
DECFSZ COUNT1 ,F
GOTO FR4
BCF PORTA,3 ;STOP COUNT
MOVF TMR0,W ;GET TMR0 COUNT
MOVWF CNT2
SUBWF RTCC2 ,F ;TEST FOR TMR0 ROLLOVER
BTFSS STATUS,C
GOTO FR9
BTFSS STATUS,Z
INCF CNT3 ,F
FR9 CLRF CNT1 ;SET TO GET PRESCALER COUNT
FR10 DECF CNT1 ,F
BSF PORTA,2 ;TOGGLE TMR0 PIN
BCF PORTA,2
MOVF TMR0,W ;TEST IF TMR0 HAS CHANGED
XORWF CNT2,W
BTFSC STATUS,Z
GOTO FR10
RETLW 0X00
;
;*********************************************************
; START MAIN PROGRAM
;*********************************************************
;
START:
CLRF PORTA ;INSTRUCTION, WRITE, ENABLE LOW
CLRF PORTB
;
BSF STATUS,RP0
MOVLW B'00010000'
MOVWF TRISA
MOVLW B'00000000'
MOVWF TRISB
BCF STATUS,RP0
CALL INT_DEL
CALL INT_DEL
CALL INT_DEL
;
MOVLW 0X38 ;INITIALIZE DISPLAY
CALL MIRROR
MOVWF PORTB
;
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
;
MOVLW 0X38 ;FUNCTION
CALL INST
MOVLW B'00001100' ;DISPLAY ON, CURSOR OFF
CALL INST
MOVLW B'00000001' ;CLEAR DISPLAY
CALL INST
MOVLW B'00000110' ;ENTRY MODE
CALL INST
;
;***********************************
; NEW LINES HERE FOR INTRO
MOVLW 0X50 ;P
CALL LCD_OUT
MOVLW 0X46 ;F
CALL LCD_OUT
MOVLW 0X43 ;C
CALL LCD_OUT
MOVLW 0X2D ;-
CALL LCD_OUT
MOVLW 0X35 ;5
CALL LCD_OUT
MOVLW 0X30 ;0
CALL LCD_OUT
;
MOVLW 0X06 ;CHANGE THE 6 TO A SMALLER NO. TO SPEED UP THE INTRO
MOVWF COUNT3
WAIT1:
MOVLW 0XC8
MOVWF COUNT4
WAIT2:
CALL INT_DEL
DECFSZ COUNT4 ,F
GOTO WAIT2
DECFSZ COUNT3 ,F
GOTO WAIT1
;************************************
MOVLW B'00000001' ;CLEAR DISPLAY
CALL INST
;
MHZ MOVLW 0X14 ;0.1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF "0"
XORWF 19,W
BTFSS STATUS,Z
GOTO MHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSC STATUS,Z
GOTO KHZ1
MHZ1 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X02 ;OUTPUT FIRST 2 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
MHZ2 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO MHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ2
GOTO MHZ4
MHZ3 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ3
MHZ4 MOVLW 0X2E ;"."
CALL LCD_OUT
MOVLW 0X05 ;OUTPUT LAST 5 CHARACTERS
MOVWF COUNT1
MHZ5 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ5
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4D ;"M"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO MHZ
;-----------------------------------
KHZ MOVLW 0X14 ;0.1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF 0
XORWF 19,W
BTFSS STATUS,Z
GOTO MHZ1
MOVLW 0X32 ;TEST IF < 2
SUBWF 1A,W
BTFSC STATUS,C
GOTO MHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSS STATUS,Z
GOTO KHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1B,W
BTFSC STATUS,Z
GOTO XKHZ
KHZ1 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X05 ;OUTPUT FIRST 5 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
KHZ2 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO KHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO KHZ2
GOTO KHZ4
KHZ3 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO KHZ3
KHZ4 MOVLW 0X2E ;"."
CALL LCD_OUT
MOVF INDF,W ;OUTPUT LAST 2 CHARACTERS
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4B ;"K"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO KHZ
;-----------------------------------
XKHZ MOVLW 0XC8 ;1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF 0
XORWF 19,W
BTFSS STATUS,Z
GOTO KHZ
MOVLW 0X32 ;TEST IF < 2
SUBWF 1A,W
BTFSC STATUS,C
GOTO KHZ
MOVLW 0X30 ;TEST IF 0
XORWF 1A,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X30 ;TEST IF 0
XORWF 1B,W
BTFSC STATUS,Z
GOTO HZ0
XKHZ1:
MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X04 ;OUTPUT FIRST 4 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
XKHZ2:
MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO XKHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO XKHZ2
GOTO XKHZ4
XKHZ3:
MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO XKHZ3
XKHZ4:
MOVLW 0X2E ;"."
CALL LCD_OUT
MOVF INDF,W ;OUTPUT LAST 3 CHARACTERS
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4B ;"K"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO XKHZ
;-----------------------------------
HZ MOVLW 0XC8 ;1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF "0"
XORWF 19,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X32 ;TEST IF < 2
SUBWF 1B,W
BTFSC STATUS,C
GOTO XKHZ1
HZ0 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X07 ;OUTPUT FIRST 7 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
HZ1 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO HZ2
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO HZ1
GOTO HZ3
HZ2 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO HZ2
HZ3 MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO HZ
;-----------------------------------
OVERFLOW:
MOVLW 0X01 ;CLEAR DISPLAY
CALL INST
MOVLW 0X84 ;DISPLAY ADDRESS
CALL INST
MOVLW 0X4F ;"O"
CALL LCD_OUT
MOVLW 0X76 ;"V"
CALL LCD_OUT
MOVLW 0X65 ;"E"
CALL LCD_OUT
MOVLW 0X72 ;"R"
CALL LCD_OUT
MOVLW 0X66 ;"F"
CALL LCD_OUT
MOVLW 0X6C ;"L"
CALL LCD_OUT
MOVLW 0X6F ;"O"
CALL LCD_OUT
MOVLW 0X77 ;"W"
CALL LCD_OUT
MOVLW 0X02 ;CURSOR AT HOME
CALL INST
GOTO MHZ
;-----------------------------------
END
SHIFT: return
ericgibbs said:hi Dawn,
Mike has already answered your query, so I will not add my four penny worth.
Looks an interesting bit of code, you must let us know how the program changes go.![]()
A suggestion would be, when you post program code after you have placed it in the text window, SELECT the code, then use the menu at the top of the window, click the # symbol [wrap code tags].
This will display all your code including the formatting.
Anyone wishing to run your program, just has to copy and paste, OK.
Hope that makes sense.
;********************************************
; PFC-50 POCKET FREQUENCY COUNTER
;********************************************
;
;WATCHDOG DISABLED
;
;**********************************************************
LIST P=16F84A
#include <p16F84A.inc>
__CONFIG _XT_OSC & _WDT_OFF & _PWRTE_ON & _CP_OFF
errorlevel -302
;**********************************************************
RS EQU 2H
RW EQU 1H
E EQU 0H
O EQU 7H
;
COUNT1 EQU 2CH
COUNT2 EQU 2DH
IN_REG EQU 2EH
ADDCNT EQU 2FH
GATE EQU 0CH
CNT1 EQU 0DH
CNT2 EQU 0EH
CNT3 EQU 0FH
CALC1 EQU 10H
CALC2 EQU 11H
CALC3 EQU 12H
SUM1 EQU 13H
SUM2 EQU 14H
SUM3 EQU 15H
RTCC2 EQU 16H
TEMP1 EQU 17H
TEMP2 EQU 18H
COUNT3 EQU 19H
COUNT4 EQU 1AH
;-----------------------------------------------
;-----------------------------------------------
;-----------------------------------------------
ORG 0
GOTO START
;
INT_DEL:
MOVLW 0X05 ;DELAY 5.000 MS (4 MHZ CLOCK)
MOVWF COUNT1
D1 MOVLW 0XA5
MOVWF COUNT2
D2 DECFSZ COUNT2,F
GOTO D2
DECFSZ COUNT1,F
GOTO D1
RETLW 0X00
;
MIRROR:
CLRF TEMP2
MOVWF TEMP1
BTFSC TEMP1,0
BSF TEMP2,7
BTFSC TEMP1,1
BSF TEMP2,6
BTFSC TEMP1,2
BSF TEMP2,5
BTFSC TEMP1,3
BSF TEMP2,4
BTFSC TEMP1,4
BSF TEMP2,3
BTFSC TEMP1,5
BSF TEMP2,2
BTFSC TEMP1,6
BSF TEMP2,1
BTFSC TEMP1,7
BSF TEMP2,0
MOVF TEMP2,W
RETURN
;
LCD_OUT:
CALL MIRROR
MOVWF PORTB ;LOAD DATA INTO PORTB
BSF STATUS,RP0
MOVLW B'00000000' ;DEFINE PORTB AS OUTPUT
MOVWF TRISB
BCF STATUS,RP0
BSF PORTA,RS ;RS = DATA
BCF PORTA,RW ;R/W = WRITE
BSF PORTA,E ;TOGGLE ENABLE
BCF PORTA,E
;
BSF STATUS,RP0
MOVLW B'11111111' ;DEFINE PORTB AS INPUT
MOVWF TRISB
BCF STATUS,RP0
;
BCF PORTA,RS ;RS = INSTRUCTION
BSF PORTA,RW ;R/W = READ
BSF PORTA,E ;ENABLE HIGH
MOVF PORTB,W ;GET ADDRESS COUNTER
CALL MIRROR
MOVWF ADDCNT
BSF ADDCNT,7
BCF PORTA,E ;ENABLE LOW
OUT1 BSF PORTA,E ;ENABLE HIGH
BTFSS PORTB,0 ;TEST BUSY FLAG
GOTO OUT2
BCF PORTA,E ;ENABLE LOW
GOTO OUT1
OUT2 BCF PORTA,E ;ENABLE LOW
GOTO SHIFT
;
INST:
CALL MIRROR
MOVWF PORTB ;LOAD INSTRUCTION INTO PORTB
BSF STATUS,RP0
MOVLW B'00000000' ;DEFINE PORTB AS OUTPUT
MOVWF TRISB
BCF STATUS,RP0
BCF PORTA,RS ;RS = INSTRUCTION
BCF PORTA,RW ;R/W = WRITE
BSF PORTA,E ;TOGGLE ENABLE
BCF PORTA,E
BSF STATUS,RP0
MOVLW B'11111111' ;DEFINE PORTB AS INPUT
MOVWF TRISB
BCF STATUS,RP0
BSF PORTA,RW ;R/W = READ
INST1:
BSF PORTA,E ;ENABLE HIGH
BTFSS PORTB,0 ;TEST BUSY FLAG
GOTO INST2
BCF PORTA,E ;ENABLE LOW
GOTO INST1
INST2:
BCF PORTA,E ;ENABLE LOW
RETLW 0X00
;
;-----------------------------------
; LCD 16X1
SHIFT:
BTFSS ADDCNT,0 ;SHIFT TO OPPOSITE SIDE OF DISPLAY?
RETLW 0X00
BTFSS ADDCNT,1
RETLW 0X00
BTFSS ADDCNT,2
RETLW 0X00
MOVLW 0XC0
MOVF ADDCNT,W
MOVLW 0XC0
GOTO INST
;------------------------------------
SUB BCF STATUS,O ;CLEAR OVERFLOW BIT
MOVF CALC1,W ;SUBTRACT CALC1 FROM CNT1
SUBWF CNT1 ,F
BTFSC STATUS,C
GOTO SB1
MOVLW 0X01 ;BORROW FROM CNT2 IF OVERFLOW
SUBWF CNT2 ,F
BTFSC STATUS,C
GOTO SB1
SUBWF CNT3 ,F ;BORROW FROM CNT3 IF CNT2 OVERFLOW
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
SB1 MOVF CALC2,W ;SUBTRACT CALC2 FROM CNT2
SUBWF CNT2 ,F
BTFSC STATUS,C
GOTO SB2
MOVLW 0X01 ;BORROW FROM CNT3 IF CNT2 OVERFLOW
SUBWF CNT3 ,F
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
SB2 MOVF CALC3,W ;SUBTRACT CALC3 FROM CNT3
SUBWF CNT3 ,F
BTFSS STATUS,C
BSF STATUS,O ;SET OVERFLOW BIT IF RESULT IS NEGATIVE
RETLW 0X00
;-----------------------------------
ADD MOVF CALC1,W ;ADD CALC1 TO CNT1
ADDWF CNT1 ,F
BTFSS STATUS,C
GOTO AD1
INCFSZ CNT2 ,F ;ADD TO CNT2 IF CNT1 OVERFLOW
GOTO AD1
INCF CNT3 ,F ;ADD TO CNT3 IF CNT2 OVERFLOW
AD1 MOVF CALC2,W ;ADD CALC2 TO CNT2
ADDWF CNT2 ,F
BTFSC STATUS,C
INCF CNT3 ,F ;ADD TO CNT3 IF CNT2 OVERFLOW
MOVF CALC3,W ;ADD CALC3 TO CNT3
ADDWF CNT3 ,F
RETLW 0X00
;-----------------------------------
CNVT MOVLW 0X07 ;7 DIGITS IN DISPLAY
MOVWF COUNT1
MOVLW 0X19 ;SET FSR FOR MSB IN DISPLAY
MOVWF FSR
MOVLW 0X2F ;ONE LESS THAT ASCII "0"
CNVT0:
MOVWF INDF
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO CNVT0
MOVLW 0X0F ;LOAD "1,000,000" IN CALC1-3
MOVWF CALC3
MOVLW 0X42
MOVWF CALC2
MOVLW 0X40
MOVWF CALC1
CNVT1:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 19 ,F ;INCREMENT 1,000,000'S REGISTER
MOVLW 0X3A
XORWF 19,W
BTFSC STATUS,Z
GOTO OVERFLOW
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT1
CALL ADD ;ADD BACK LAST NUMBER
MOVLW 0X01 ;LOAD "100,000" IN CALC1-3
MOVWF CALC3
MOVLW 0X86
MOVWF CALC2
MOVLW 0XA0
MOVWF CALC1
CNVT2:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1A ,F ;INCREMENT 100,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT2
CALL ADD ;ADD BACK LAST NUMBER
CLRF CALC3 ;LOAD "10,000" IN CALC1-3
MOVLW 0X27
MOVWF CALC2
MOVLW 0X10
MOVWF CALC1
CNVT3:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1B ,F ;INCREMENT 10,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT3
CALL ADD ;ADD BACK LAST NUMBER
MOVLW 0X03 ;LOAD "1,000" IN CALC1-3
MOVWF CALC2
MOVLW 0XE8
MOVWF CALC1
CNVT4:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1C ,F ;INCREMENT 1,000'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT4
CALL ADD ;ADD BACK LAST NUMBER
CLRF CALC2 ;LOAD "100" IN CALC1-3
MOVLW 0X64
MOVWF CALC1
CNVT5:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1D ,F ;INCREMENT 100'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT5
CALL ADD ;ADD BACK NUMBER
MOVLW 0X0A ;LOAD "10" IN CALC1-3
MOVWF CALC1
CNVT6:
CALL SUB ;SUBTRACT NUMBER FROM COUNT
INCF 1E ,F ;INCREMENT 10'S REGISTER
BTFSS STATUS,O ;CHECK IF OVERFLOW
GOTO CNVT6
CALL ADD ;ADD BACK LAST NUMBER
MOVF CNT1,W ;PUT REMAINDFER IN 1'S REGISTER
ADDWF 1F ,F
INCF 1F ,F
RETLW 0X00
;-----------------------------------
COUNT:
BSF STATUS,RP0
MOVLW B'00110111' ;TMR0 = EXT, 1/256
MOVWF OPTION_REG
MOVLW B'00010000' ;DEFINE PORTA AS OUTPUT
MOVWF TRISA
BCF STATUS,RP0
BCF PORTA,3
BCF PORTA,2
CLRF CNT3
CLRF TMR0
CLRF RTCC2
BSF PORTA,2 ;TOGGLE TMR0 PIN
BCF PORTA,2
MOVF GATE,W ;GET GATE TIME
MOVWF COUNT1
BSF PORTA,3 ;START COUNT
FR4 MOVLW 0XFA
MOVWF COUNT2
GOTO FR6
FR5 NOP
NOP
NOP
NOP
NOP
NOP
FR6 MOVF TMR0,W ;TEST FOR TMR0 ROLLOVER (12)
SUBWF RTCC2 ,F
BTFSS STATUS,Z
GOTO FR7
NOP
GOTO FR8
FR7 BTFSC STATUS,C
INCF CNT3 ,F
FR8 MOVWF RTCC2
NOP
NOP
NOP
DECFSZ COUNT2 ,F
GOTO FR5
DECFSZ COUNT1 ,F
GOTO FR4
BCF PORTA,3 ;STOP COUNT
MOVF TMR0,W ;GET TMR0 COUNT
MOVWF CNT2
SUBWF RTCC2 ,F ;TEST FOR TMR0 ROLLOVER
BTFSS STATUS,C
GOTO FR9
BTFSS STATUS,Z
INCF CNT3 ,F
FR9 CLRF CNT1 ;SET TO GET PRESCALER COUNT
FR10 DECF CNT1 ,F
BSF PORTA,2 ;TOGGLE TMR0 PIN
BCF PORTA,2
MOVF TMR0,W ;TEST IF TMR0 HAS CHANGED
XORWF CNT2,W
BTFSC STATUS,Z
GOTO FR10
RETLW 0X00
;
;************************************************* ********
; START MAIN PROGRAM
;************************************************* ********
;
START:
CLRF PORTA ;INSTRUCTION, WRITE, ENABLE LOW
CLRF PORTB
;
BSF STATUS,RP0
MOVLW B'00010000'
MOVWF TRISA
MOVLW B'00000000'
MOVWF TRISB
BCF STATUS,RP0
CALL INT_DEL
CALL INT_DEL
CALL INT_DEL
;
MOVLW 0X38 ;INITIALIZE DISPLAY
CALL MIRROR
MOVWF PORTB
;
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
BSF PORTA,E ;TOGGLE ENABLE
CALL INT_DEL
BCF PORTA,E
;
MOVLW 0X38 ;FUNCTION
CALL INST
MOVLW B'00001100' ;DISPLAY ON, CURSOR OFF
CALL INST
MOVLW B'00000001' ;CLEAR DISPLAY
CALL INST
MOVLW B'00000110' ;ENTRY MODE
CALL INST
;
;***********************************
; NEW LINES HERE FOR INTRO
;*******************************
MOVLW 0X50 ;P
CALL LCD_OUT
MOVLW 0X46 ;F
CALL LCD_OUT
MOVLW 0X43 ;C
CALL LCD_OUT
MOVLW 0X2D ;-
CALL LCD_OUT
MOVLW 0X35 ;5
CALL LCD_OUT
MOVLW 0X30 ;0
CALL LCD_OUT
;
MOVLW 0X06 ;CHANGE THE 6 TO A SMALLER NO. TO SPEED UP THE INTRO
MOVWF COUNT3
WAIT1:
MOVLW 0XC8
MOVWF COUNT4
WAIT2:
CALL INT_DEL
DECFSZ COUNT4 ,F
GOTO WAIT2
DECFSZ COUNT3 ,F
GOTO WAIT1
;************************************
MOVLW B'00000001' ;CLEAR DISPLAY
CALL INST
;
MHZ MOVLW 0X14 ;0.1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF "0"
XORWF 19,W
BTFSS STATUS,Z
GOTO MHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSC STATUS,Z
GOTO KHZ1
MHZ1 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X02 ;OUTPUT FIRST 2 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
MHZ2 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO MHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ2
GOTO MHZ4
MHZ3 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ3
MHZ4 MOVLW 0X2E ;"."
CALL LCD_OUT
MOVLW 0X05 ;OUTPUT LAST 5 CHARACTERS
MOVWF COUNT1
MHZ5 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO MHZ5
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4D ;"M"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO MHZ
;-----------------------------------
KHZ MOVLW 0X14 ;0.1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF 0
XORWF 19,W
BTFSS STATUS,Z
GOTO MHZ1
MOVLW 0X32 ;TEST IF < 2
SUBWF 1A,W
BTFSC STATUS,C
GOTO MHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSS STATUS,Z
GOTO KHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1B,W
BTFSC STATUS,Z
GOTO XKHZ
KHZ1 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X05 ;OUTPUT FIRST 5 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
KHZ2 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO KHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO KHZ2
GOTO KHZ4
KHZ3 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO KHZ3
KHZ4 MOVLW 0X2E ;"."
CALL LCD_OUT
MOVF INDF,W ;OUTPUT LAST 2 CHARACTERS
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4B ;"K"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO KHZ
;-----------------------------------
XKHZ MOVLW 0XC8 ;1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF 0
XORWF 19,W
BTFSS STATUS,Z
GOTO KHZ
MOVLW 0X32 ;TEST IF < 2
SUBWF 1A,W
BTFSC STATUS,C
GOTO KHZ
MOVLW 0X30 ;TEST IF 0
XORWF 1A,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X30 ;TEST IF 0
XORWF 1B,W
BTFSC STATUS,Z
GOTO HZ0
XKHZ1:
MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X04 ;OUTPUT FIRST 4 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
XKHZ2:
MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO XKHZ3
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO XKHZ2
GOTO XKHZ4
XKHZ3:
MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO XKHZ3
XKHZ4:
MOVLW 0X2E ;"."
CALL LCD_OUT
MOVF INDF,W ;OUTPUT LAST 3 CHARACTERS
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
MOVF INDF,W
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X4B ;"K"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO XKHZ
;-----------------------------------
HZ MOVLW 0XC8 ;1 SEC GATE
MOVWF GATE
CALL COUNT
CALL CNVT ;CONVERT BINARY TO BCD
MOVLW 0X30 ;TEST IF "0"
XORWF 19,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X30 ;TEST IF "0"
XORWF 1A,W
BTFSS STATUS,Z
GOTO XKHZ1
MOVLW 0X32 ;TEST IF < 2
SUBWF 1B,W
BTFSC STATUS,C
GOTO XKHZ1
HZ0 MOVLW 0X82 ;SET DISPLAY ADDRESS
CALL INST
MOVLW 0X07 ;OUTPUT FIRST 7 CHARACTERS
MOVWF COUNT1
MOVLW 0X19 ;MSD OF FREQ
MOVWF FSR
HZ1 MOVLW 0X30 ;TEST IF "0"
XORWF INDF,W
BTFSS STATUS,Z
GOTO HZ2
MOVLW 0X20 ;CHANGE PRECEEDING "0'S" TO "SPACE"
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO HZ1
GOTO HZ3
HZ2 MOVF INDF,W
CALL LCD_OUT
INCF FSR ,F
DECFSZ COUNT1 ,F
GOTO HZ2
HZ3 MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X48 ;"H"
CALL LCD_OUT
MOVLW 0X7A ;"Z"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
MOVLW 0X20 ;"SPACE"
CALL LCD_OUT
GOTO HZ
;-----------------------------------
OVERFLOW:
MOVLW 0X01 ;CLEAR DISPLAY
CALL INST
MOVLW 0X84 ;DISPLAY ADDRESS
CALL INST
MOVLW 0X4F ;"O"
CALL LCD_OUT
MOVLW 0X76 ;"V"
CALL LCD_OUT
MOVLW 0X65 ;"E"
CALL LCD_OUT
MOVLW 0X72 ;"R"
CALL LCD_OUT
MOVLW 0X66 ;"F"
CALL LCD_OUT
MOVLW 0X6C ;"L"
CALL LCD_OUT
MOVLW 0X6F ;"O"
CALL LCD_OUT
MOVLW 0X77 ;"W"
CALL LCD_OUT
MOVLW 0X02 ;CURSOR AT HOME
CALL INST
GOTO MHZ
;-----------------------------------
END
MIRROR:
CLRF TEMP2
MOVWF TEMP1
BTFSC TEMP1,0
BSF TEMP2,7
BTFSC TEMP1,1
BSF TEMP2,6
BTFSC TEMP1,2
BSF TEMP2,5
BTFSC TEMP1,3
BSF TEMP2,4
BTFSC TEMP1,4
BSF TEMP2,3
BTFSC TEMP1,5
BSF TEMP2,2
BTFSC TEMP1,6
BSF TEMP2,1
BTFSC TEMP1,7
BSF TEMP2,0
MOVF TEMP2,W
RETURN
Mirror movwf Temp
clrf Answer
bsf Answer,0
MirrorLoop rrf Temp,F
rlf Answer,F
btfss STATUS,C
goto MirrorLoop
movfw Answer
return
Pommie said:Eric, while I wouldn't use the word elegant, it does work. I must say though, it took me a while to work out what it was doing and where to put that return. The read of the LCD status is particularly confusing.
To be fair, I suspect that it was written for a 12 bit core and so the only way to code it was in line. For anyone not aware of the fact, 12 bit cores had a stack that contained only 2 words.
Maybe we should start a competition. See who can produce the most elegant translation.
Mike.
ericgibbs said:Shouldn't you be in bed at this time..![]()
;Generated by WinDis84, (c) Nigel Goodwin 1998.
LIST P=16F84, F=INHX8M
include "P16FXX.inc"
ORG 0x0000
GOTO Label_0001
ORG 0x0004
GOTO Label_0002
Label_002C ADDWF PCL , f
RETLW 0x08
RETLW 0x00
RETLW 0x98
RETLW 0x96
RETLW 0x80
RETLW 0x86
RETLW 0x86
RETLW 0x07
RETLW 0x00
RETLW 0x0F
RETLW 0x42
RETLW 0x40
RETLW 0x87
RETLW 0x87
RETLW 0x06
RETLW 0x00
RETLW 0x01
RETLW 0x86
RETLW 0xA0
RETLW 0xC0
RETLW 0xC0
RETLW 0x05
RETLW 0x00
RETLW 0x00
RETLW 0x27
RETLW 0x10
RETLW 0xC2
RETLW 0xC1
RETLW 0x04
RETLW 0x00
RETLW 0x00
RETLW 0x03
RETLW 0xE8
RETLW 0xC3
RETLW 0xC3
RETLW 0x03
RETLW 0x00
RETLW 0x00
RETLW 0x00
RETLW 0x64
RETLW 0xC4
RETLW 0xC4
RETLW 0x02
RETLW 0x00
RETLW 0x00
RETLW 0x00
RETLW 0x0A
RETLW 0xC6
RETLW 0xC5
RETLW 0x01
RETLW 0x00
RETLW 0x00
RETLW 0x00
RETLW 0x01
RETLW 0xC7
RETLW 0xC7
RETLW 0xFF
Label_0030 ADDWF PCL , f
RETLW 0x01
RETLW 0x56
RETLW 0x46
RETLW 0x4F
RETLW 0x2B
RETLW 0x49
RETLW 0x46
RETLW 0x02
RETLW 0x49
RETLW 0x46
RETLW 0x2D
RETLW 0x56
RETLW 0x46
RETLW 0x4F
RETLW 0x03
RETLW 0x56
RETLW 0x46
RETLW 0x4F
RETLW 0x2D
RETLW 0x49
RETLW 0x46
RETLW 0xFF
Label_0002 RETFIE
Label_0001 CLRF PORTA
CLRF PORTB
BSF STATUS , RP0
MOVLW 0xFF
MOVWF TRISA
MOVLW 0x00
MOVWF TRISB
MOVLW 0x27
MOVWF OPTION_REG
BCF STATUS , RP0
CALL Label_0003
CALL Label_0004
CALL Label_0005
Label_0009 CLRF TMR0
CLRF 0x37
BCF INTCON , T0IF
BSF STATUS , RP0
MOVLW 0xFF
MOVWF TRISA
BCF STATUS , RP0
CALL Label_0004
BCF PORTA , 03
BSF STATUS , RP0
MOVLW 0xF7
MOVWF TRISA
BCF STATUS , RP0
CALL Label_0006
CALL Label_0007
BTFSS PORTA , 00
GOTO Label_0008
CALL Label_0004
GOTO Label_0009
Label_0008 CALL Label_0004
BTFSS PORTA , 00
GOTO Label_0008
MOVLW 0x07
MOVWF 0x3B
CALL Label_000A
Label_0011 CALL Label_000B
CALL Label_000C
Label_000F BTFSS PORTA , 00
GOTO Label_000D
BTFSS PORTA , 01
GOTO Label_000E
GOTO Label_000F
Label_000E CALL Label_0004
BTFSS PORTA , 01
GOTO Label_000E
CALL Label_0010
GOTO Label_0011
Label_000D CALL Label_0004
BTFSS PORTA , 00
GOTO Label_000D
DECFSZ 0x3B , f
GOTO Label_0011
CALL Label_0012
Label_0018 CALL Label_0013
Label_0016 BTFSS PORTA , 00
GOTO Label_0014
BTFSS PORTA , 01
GOTO Label_0015
GOTO Label_0016
Label_0015 CALL Label_0004
BTFSS PORTA , 01
GOTO Label_0015
DECFSZ 0x30 , f
GOTO Label_0017
MOVLW 0x03
MOVWF 0x30
Label_0017 GOTO Label_0018
Label_0014 CALL Label_0004
BTFSS PORTA , 00
GOTO Label_0014
CALL Label_0019
GOTO Label_0009
Label_0006 MOVF TMR0 , W
MOVWF 0x38
BTFSS INTCON , T0IF
GOTO Label_001A
INCF 0x37 , f
BCF INTCON , T0IF
Label_001A CLRF 0x3A
DECF 0x3A , f
Label_001D BCF PORTA , 03
BSF PORTA , 03
MOVF TMR0 , W
SUBWF 0x38 , W
BTFSC STATUS , Z
GOTO Label_001B
GOTO Label_001C
Label_001B INCF 0x3A , f
GOTO Label_001D
Label_001C COMF 0x3A , W
MOVWF 0x39
RETURN
Label_0007 MOVF 0x30 , W
DECFSZ 0x30 , f
GOTO Label_001E
MOVWF 0x30
CLRF 0x0E
MOVF 0x37 , W
MOVWF 0x0F
MOVF 0x38 , W
MOVWF 0x10
MOVF 0x39 , W
MOVWF 0x11
MOVLW 0x0E
MOVWF 0x32
MOVLW 0x2C
MOVWF 0x31
CALL Label_001F
GOTO Label_0020
Label_001E DECFSZ 0x30 , f
GOTO Label_0021
MOVWF 0x30
CLRF 0x12
MOVF 0x37 , W
MOVWF 0x13
MOVF 0x38 , W
MOVWF 0x14
MOVF 0x39 , W
MOVWF 0x15
MOVLW 0x2C
MOVWF 0x31
MOVLW 0x0E
MOVWF 0x32
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
MOVLW 0x0E
MOVWF 0x32
MOVLW 0x12
MOVWF 0x31
CALL Label_0023
DECFSZ 0x16 , W
GOTO Label_0020
CLRF 0x0E
CLRF 0x0F
CLRF 0x10
CLRF 0x11
GOTO Label_0020
Label_0021 MOVWF 0x30
CLRF 0x0E
MOVF 0x37 , W
MOVWF 0x0F
MOVF 0x38 , W
MOVWF 0x10
MOVF 0x39 , W
MOVWF 0x11
MOVLW 0x0E
MOVWF 0x32
MOVLW 0x2C
MOVWF 0x31
CALL Label_0023
DECFSZ 0x16 , W
GOTO Label_0020
CLRF 0x0E
CLRF 0x0F
CLRF 0x10
CLRF 0x11
Label_0020 MOVLW 0x0E
MOVWF 0x31
MOVLW 0x28
MOVWF 0x32
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
CALL Label_0024
CLRF 0x3E
CALL Label_0025
CALL Label_0026
CALL Label_0027
RETURN
Label_000B MOVLW 0x2C
MOVWF 0x31
MOVLW 0x28
MOVWF 0x32
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
CALL Label_0024
MOVLW 0x01
MOVWF 0x3E
CALL Label_0025
CALL Label_0028
CALL Label_0027
RETURN
Label_0013 CALL Label_0029
CALL Label_002A
CALL Label_0027
RETURN
Label_0010 MOVLW 0x2C
MOVWF 0x31
MOVLW 0x28
MOVWF 0x32
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
CALL Label_0024
MOVF 0x3B , W
SUBLW 0x08
ADDLW 0x20
MOVWF FSR
INCF INDF , f
MOVLW 0x0A
SUBWF INDF , W
BTFSC STATUS , Z
CLRF INDF
CALL Label_002B
MOVLW 0x2C
MOVWF 0x32
MOVLW 0x28
MOVWF 0x31
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
RETURN
Label_003D CLRW
Label_002F MOVWF 0x34
CALL Label_002C
MOVWF 0x36
MOVLW 0xFF
SUBWF 0x36 , W
BTFSC STATUS , Z
GOTO Label_002D
MOVF 0x36 , W
SUBWF 0x33 , W
BTFSC STATUS , Z
GOTO Label_002E
MOVF 0x34 , W
ADDLW 0x07
GOTO Label_002F
Label_002E MOVF 0x34 , W
ADDLW 0x01
CALL Label_002C
MOVWF 0x12
MOVF 0x34 , W
ADDLW 0x02
CALL Label_002C
MOVWF 0x13
MOVF 0x34 , W
ADDLW 0x03
CALL Label_002C
MOVWF 0x14
MOVF 0x34 , W
ADDLW 0x04
CALL Label_002C
MOVWF 0x15
MOVF 0x34 , W
ADDLW 0x05
BTFSS PORTA , 02
ADDLW 0x01
CALL Label_002C
MOVWF 0x16
Label_002D RETURN
Label_0029 CLRW
Label_0033 MOVWF 0x34
CALL Label_0030
MOVWF 0x36
MOVLW 0xFF
SUBWF 0x36 , W
BTFSC STATUS , Z
GOTO Label_0031
MOVF 0x36 , W
SUBWF 0x30 , W
BTFSC STATUS , Z
GOTO Label_0032
MOVF 0x34 , W
ADDLW 0x07
GOTO Label_0033
Label_0032 MOVF 0x34 , W
ADDLW 0x01
CALL Label_0030
MOVWF 0x22
MOVF 0x34 , W
ADDLW 0x02
CALL Label_0030
MOVWF 0x23
MOVF 0x34 , W
ADDLW 0x03
CALL Label_0030
MOVWF 0x24
MOVF 0x34 , W
ADDLW 0x04
CALL Label_0030
MOVWF 0x25
MOVF 0x34 , W
ADDLW 0x05
CALL Label_0030
MOVWF 0x26
MOVF 0x34 , W
ADDLW 0x06
CALL Label_0030
MOVWF 0x27
Label_0031 RETURN
Label_001F CLRF 0x16
MOVLW 0x04
MOVWF 0x0D
MOVLW 0x03
ADDWF 0x31 , f
MOVLW 0x03
ADDWF 0x32 , f
Label_0037 MOVF 0x32 , W
MOVWF FSR
MOVF 0x16 , W
ADDWF INDF , f
CLRF 0x16
BTFSS STATUS , C
GOTO Label_0034
MOVLW 0x01
MOVWF 0x16
Label_0034 MOVF 0x31 , W
MOVWF FSR
MOVF INDF , W
MOVWF 0x34
MOVF 0x32 , W
MOVWF FSR
MOVF 0x34 , W
ADDWF INDF , f
BTFSS STATUS , C
GOTO Label_0035
MOVLW 0x01
MOVWF 0x16
Label_0035 DECFSZ 0x0D , f
GOTO Label_0036
RETURN
Label_0036 DECF 0x31 , f
DECF 0x32 , f
GOTO Label_0037
Label_0023 CLRF 0x16
MOVLW 0x04
MOVWF 0x0D
MOVLW 0x03
ADDWF 0x31 , f
MOVLW 0x03
ADDWF 0x32 , f
Label_003B MOVF 0x32 , W
MOVWF FSR
MOVF 0x16 , W
SUBWF INDF , f
CLRF 0x16
BTFSC STATUS , C
GOTO Label_0038
MOVLW 0x01
MOVWF 0x16
Label_0038 MOVF 0x31 , W
MOVWF FSR
MOVF INDF , W
MOVWF 0x34
MOVF 0x32 , W
MOVWF FSR
MOVF 0x34 , W
SUBWF INDF , f
BTFSC STATUS , C
GOTO Label_0039
MOVLW 0x01
MOVWF 0x16
Label_0039 DECFSZ 0x0D , f
GOTO Label_003A
RETURN
Label_003A DECF 0x31 , f
DECF 0x32 , f
GOTO Label_003B
Label_003E CLRF 0x17
Label_003C CALL Label_0023
INCF 0x17 , f
DECFSZ 0x16 , W
GOTO Label_003C
CALL Label_001F
DECF 0x17 , f
RETURN
Label_0022 MOVF 0x31 , W
MOVWF FSR
MOVF INDF , W
MOVWF 0x34
MOVF 0x32 , W
MOVWF FSR
MOVF 0x34 , W
MOVWF INDF
INCF 0x31 , f
INCF 0x32 , f
DECFSZ 0x0D , f
GOTO Label_0022
RETURN
Label_0024 MOVF 0x28 , W
MOVWF 0x0E
MOVF 0x29 , W
MOVWF 0x0F
MOVF 0x2A , W
MOVWF 0x10
MOVF 0x2B , W
MOVWF 0x11
MOVLW 0x08
MOVWF 0x33
MOVLW 0x20
MOVWF FSR
MOVLW 0x0E
MOVWF 0x32
MOVLW 0x12
MOVWF 0x31
Label_003F MOVF FSR , W
MOVWF 0x35
CALL Label_003D
CALL Label_003E
MOVF 0x35 , W
MOVWF FSR
MOVF 0x17 , W
MOVWF INDF
INCF FSR , f
DECFSZ 0x33 , f
GOTO Label_003F
RETURN
Label_0025 BTFSS PORTA , 02
GOTO Label_0040
MOVLW 0x20
MOVWF 0x31
MOVLW 0x1E
MOVWF 0x32
MOVLW 0x03
MOVWF 0x0D
CALL Label_0022
MOVLW 0x23
MOVWF 0x31
MOVLW 0x22
MOVWF 0x32
MOVLW 0x03
MOVWF 0x0D
GOTO Label_0041
Label_0040 MOVLW 0x20
MOVWF 0x31
MOVLW 0x1E
MOVWF 0x32
MOVLW 0x04
MOVWF 0x0D
CALL Label_0022
MOVLW 0x24
MOVWF 0x31
MOVLW 0x23
MOVWF 0x32
MOVLW 0x03
MOVWF 0x0D
Label_0041 CALL Label_0022
CALL Label_0042
RETURN
Label_0042 MOVLW 0x0A
MOVWF 0x0D
MOVLW 0x1E
MOVWF FSR
Label_004A MOVLW 0x07
BTFSS PORTA , 02
MOVLW 0x06
SUBWF 0x0D , W
BTFSC STATUS , Z
GOTO Label_0043
MOVLW 0x03
BTFSS PORTA , 02
MOVLW 0x02
SUBWF 0x0D , W
BTFSS STATUS , Z
GOTO Label_0044
Label_0043 MOVLW 0x20
MOVF 0x3E , f
BTFSS STATUS , Z
MOVLW 0x2E
GOTO Label_0045
Label_0044 MOVF INDF , W
BTFSC STATUS , Z
GOTO Label_0046
GOTO Label_0047
Label_0046 MOVF 0x3E , f
BTFSS STATUS , Z
GOTO Label_0048
ADDLW 0x20
GOTO Label_0045
Label_0048 ADDLW 0x30
GOTO Label_0045
Label_0047 INCF 0x3E , f
ADDLW 0x30
Label_0045 MOVWF INDF
DECFSZ 0x0D , f
GOTO Label_0049
RETURN
Label_0049 INCF FSR , f
GOTO Label_004A
Label_002B CLRF 0x28
CLRF 0x29
CLRF 0x2A
CLRF 0x2B
MOVLW 0x08
MOVWF 0x33
MOVLW 0x20
MOVWF FSR
MOVLW 0x28
MOVWF 0x32
MOVLW 0x12
MOVWF 0x31
Label_004D MOVF FSR , W
MOVWF 0x35
CALL Label_003D
MOVF 0x35 , W
MOVWF FSR
MOVF INDF , W
MOVWF 0x3C
Label_004C MOVF 0x3C , f
BTFSC STATUS , Z
GOTO Label_004B
CALL Label_001F
DECF 0x3C , f
GOTO Label_004C
Label_004B MOVF 0x35 , W
MOVWF FSR
INCF FSR , f
DECFSZ 0x33 , f
GOTO Label_004D
RETURN
Label_0026 MOVLW 0x46
MOVWF 0x18
MOVLW 0x72
MOVWF 0x19
MOVLW 0x65
MOVWF 0x1A
MOVLW 0x71
MOVWF 0x1B
MOVLW 0x2E
MOVWF 0x1C
MOVLW 0x3A
MOVWF 0x1D
RETURN
Label_0028 MOVLW 0x49
MOVWF 0x18
MOVLW 0x46
MOVWF 0x19
MOVLW 0x73
MOVWF 0x1A
MOVLW 0x65
MOVWF 0x1B
MOVLW 0x74
MOVWF 0x1C
MOVLW 0x3A
MOVWF 0x1D
RETURN
Label_002A MOVLW 0x4D
MOVWF 0x18
MOVLW 0x6F
MOVWF 0x19
MOVLW 0x64
MOVWF 0x1A
MOVLW 0x65
MOVWF 0x1B
MOVLW 0x20
MOVWF 0x1C
MOVLW 0x73
MOVWF 0x1D
MOVLW 0x65
MOVWF 0x1E
MOVLW 0x74
MOVWF 0x1F
MOVLW 0x3A
MOVWF 0x20
MOVLW 0x20
MOVWF 0x21
RETURN
Label_0005 MOVLW 0x23
MOVWF PORTB
BCF PORTB , 05
CALL Label_0004
MOVLW 0x23
MOVWF PORTB
BCF PORTB , 05
CALL Label_0004
MOVLW 0x23
MOVWF PORTB
BCF PORTB , 05
CALL Label_0004
MOVLW 0x22
MOVWF PORTB
BCF PORTB , 05
CALL Label_0004
MOVLW 0x28
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
MOVLW 0x06
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
MOVLW 0x0C
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
MOVLW 0x01
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
RETURN
Label_0027 MOVLW 0x80
MOVWF 0x0C
CALL Label_004E
MOVLW 0x08
MOVWF 0x0D
MOVLW 0x18
MOVWF FSR
Label_0050 MOVF INDF , W
MOVWF 0x0C
CALL Label_004F
INCF FSR , f
DECFSZ 0x0D , f
GOTO Label_0050
MOVLW 0xC0
MOVWF 0x0C
CALL Label_004E
MOVLW 0x08
MOVWF 0x0D
Label_0051 MOVF INDF , W
MOVWF 0x0C
CALL Label_004F
INCF FSR , f
DECFSZ 0x0D , f
GOTO Label_0051
RETURN
Label_000A MOVLW 0x0D
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
RETURN
Label_0012 MOVLW 0x0C
MOVWF 0x0C
CALL Label_004E
CALL Label_0004
RETURN
Label_000C MOVF 0x3B , W
MOVWF 0x33
CALL Label_003D
MOVF 0x16 , W
MOVWF 0x0C
CALL Label_004E
RETURN
Label_004E SWAPF 0x0C , W
ANDLW 0x0F
IORLW 0x20
MOVWF PORTB
BCF PORTB , 05
CALL Label_0052
MOVF 0x0C , W
ANDLW 0x0F
IORLW 0x20
MOVWF PORTB
BCF PORTB , 05
CALL Label_0052
RETURN
Label_004F SWAPF 0x0C , W
ANDLW 0x0F
IORLW 0x30
MOVWF PORTB
BCF PORTB , 05
CALL Label_0052
MOVF 0x0C , W
ANDLW 0x0F
IORLW 0x30
MOVWF PORTB
BCF PORTB , 05
CALL Label_0052
RETURN
Label_0003 MOVLW 0x05
MOVWF 0x0D
CLRF EEADR
MOVLW 0x2C
MOVWF FSR
Label_0053 BSF STATUS , RP0
BSF EECON1 , 00
BCF STATUS , RP0
MOVF EEDATA , W
MOVWF INDF
INCF EEADR , f
INCF FSR , f
DECFSZ 0x0D , f
GOTO Label_0053
RETURN
Label_0019 MOVLW 0x05
MOVWF 0x0D
CLRF EEADR
MOVLW 0x2C
MOVWF FSR
BSF STATUS , RP0
BSF EECON1 , 02
BCF STATUS , RP0
Label_0055 MOVF INDF , W
MOVWF EEDATA
BSF STATUS , RP0
MOVLW 0x55
MOVWF EECON2
MOVLW 0xAA
MOVWF EECON2
BSF EECON1 , 01
Label_0054 BTFSS EECON1 , 04
GOTO Label_0054
BCF EECON1 , 04
BCF STATUS , RP0
INCF EEADR , f
INCF FSR , f
DECFSZ 0x0D , f
GOTO Label_0055
BCF STATUS , RP0
RETURN
Label_005B MOVLW 0xC5
MOVWF 0x3A
Label_0057 GOTO Label_0056
Label_0056 DECFSZ 0x3A , f
GOTO Label_0057
BTFSS INTCON , T0IF
GOTO Label_0058
INCF 0x37 , f
BCF INTCON , T0IF
GOTO Label_0059
Label_0058 NOP
GOTO Label_0059
Label_0059 NOP
GOTO Label_005A
Label_005A RETURN
Label_005D CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
CALL Label_005B
GOTO Label_005C
Label_005C RETURN
Label_0004 MOVLW 0x0A
MOVWF 0x3D
Label_005E CALL Label_005D
DECFSZ 0x3D , f
GOTO Label_005E
GOTO Label_005F
Label_005F RETURN
Label_0052 MOVLW 0x14
MOVWF 0x3D
Label_0060 NOP
NOP
DECFSZ 0x3D , f
GOTO Label_0060
RETURN
ORG 0x2000
DATA 0x0F
DATA 0x0F
DATA 0x0F
DATA 0x0F
ORG 0x2007
DATA 0x19
ORG 0x2100
DATA 0x00
DATA 0x00
DATA 0x00
DATA 0x00
DATA 0x01
END
Now i see that the real project father is this forum´s moderator!
I found out, when i did a search on google for Nigel Goodwin, and pointed to this same place.