RUNNING SIGN
The 5x7 Display can display running messages. Even though the "window" is only large enough for one letter to be displayed at a time, the words can still be read. 
Remember, this project is just a starting point. Its concepts can be expanded to any size and shape. For the RUNNING SIGN Routine, data in table1 is loaded into 5 Ghost locations (11h, 12h, 13h, 14h, 15h) and this data is displayed on the screen. One byte is transferred at a time from the table and loaded into the Ghost section. A routine then outputs the five locations to the screen. 
The data in the Ghost section is then shifted one place to the left and a new byte loaded into the 5th location (15h). 
This gives the effect of a message scrolling across the screen, from right to left. The message supplied with the project is: TE MOVING SIGN, but this can be altered to any message by changing the data in Table1. To work out the value of each column of LEDs, the individual HEX values are added together.
The program looks for "FF" and repeats the message.

 

RUNNING SIGN for 5x7 Display              ;Program for PIC16F84 and only F84 chip              ;Takes data from Table1 and runs it across the screen  Start ORG 0x00             ;This sets up the ports            BSF 03,5           MOVLW 00h           MOVWF 05h           MOVWF 06h           BCF 03,5           GOTO Run1               ;Table1  holds the hex values for each column of LEDs  Table1 ADDWF 02h,1         ;Add W to Program Counter              RETLW 00h              RETLW 40h              RETLW 40h              RETLW 7Fh              RETLW 40h              RETLW 40h              RETLW 00h              RETLW 7Fh              RETLW 49h              RETLW 49h              RETLW 41h              RETLW 41h              RETLW 00h              RETLW 3Fh              RETLW 40h              RETLW 3Fh              RETLW 40h              RETLW 3Fh              RETLW 00h              RETLW 3Eh              RETLW 41h              RETLW 41h              RETLW 41h              RETLW 3Eh              RETLW 00h              RETLW 70h              RETLW 0Eh              RETLW 01h              RETLW 0Eh              RETLW 70h              RETLW 00h              RETLW 7Fh              RETLW 00h              RETLW 7Fh              RETLW 10h              RETLW 0Ch              RETLW 02h              RETLW 7Fh              RETLW 00h              RETLW 3Eh              RETLW 41h              RETLW 45h              RETLW 45h              RETLW 36h              RETLW 00h              RETLW 32h              RETLW 49h              RETLW 49h              RETLW 49h              RETLW 26h              RETLW 00h              RETLW 7Fh              RETLW 00h              RETLW 3Eh              RETLW 41h              RETLW 45h              RETLW 45h              RETLW 36h              RETLW 00h              RETLW 7Fh              RETLW 10h              RETLW 0Ch              RETLW 02h              RETLW 7Fh              RETLW 00h              RETLW 00h              RETLW 00h              RETLW 00h              RETLW 0FFh  Run1      CLRF 11h           ;Clear the Ghost locations ready for starting                 CLRF 12h                CLRF 13h                CLRF 14h                CLRF 15h                MOVLW 00                MOVWF 19h      ;File 19h is the jump value for table  Run2     MOVLW 40h                MOVWF 18h      ;File 18h counts the number of scans                CALL Shift         ; and controls the "run speed"                INCF 19h,1                MOVF 19h,0      ;Put jump value into W                 CALL Table1                MOVWF 15h      ;W contains table data - put it in 15h                XORLW 0FFh     ;If table value is FF,                 BTFSC 03,2        ; bit 2 of file 3 will be SET (=1)                GOTO Run1       ;Start Table1 again  Run3     DECFSZ 18h,1    ;Scan the display 40h times               GOTO Run4               GOTO Run2  Run4     CALL Scan               GOTO Run3  Scan    BSF 05,1               ;Reset 4017              NOP              BCF 05,1             MOVF 11h,0           ;Output the data at the 5 Ghost             MOVWF 06h           ; locations to the display             CALL DelD             MOVF 12h,0             MOVWF 06h             CALL DelD             MOVF 13h,0             MOVWF 06h             CALL DelD             MOVF 14h,0             MOVWF 06h             CALL DelD             MOVF 15h,0             MOVWF 06h             CALL DelD             RETURN        ;SHIFT moves the data one place to the left to give the "movement"        ;  effect on the screen  Shift    MOVF 12h,0         ;Move file 12h to W             MOVWF 11h         ;Move W to file 11h             MOVF 13h,0         ;Move file 13h to W             MOVWF 12h         ;Move W to file 12h             MOVF 14h,0         ;Move file 14h to W             MOVWF 13h         ;Move W to file 13h             MOVF 15h,0         ;Move file 15h to W             MOVWF 14h         ;Move W to file 14h             RETURN  DelD   DECFSZ 1Bh,1      ;Delay for viewing the             GOTO DelD            ; column of LEDs            MOVLW 00h            MOVWF 06            Clk BSF 05,0           ;Clock the 4017 to            NOP                        ; the next output            BCF 05,0            RETURN            END

The block of numbers below is the HEX file for Running Sign. Copy and paste it into a text program such as TEXTPAD or NOTEPAD and call it: Running1.hex

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

The next step adds buttons to the program. Go to Testing Page3