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Software for Signboard 2
[Flash]

This routine sholud be put on the main process. Function This routine displays the data which was set to the workarea at once. Source code
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    ;***********************  Flash  ************************
            cblock         h'40'
            flash_lp
            flash_id
            flash_idw
            flash_data
            endc
    flash
            movlw   d'16'           ;Set loop count
            movwf   flash_lp        ;Save loop count
            movlw   scrnhd          ;Set screen head adr
            movwf   flash_id        ;Save screen adr
            movlw   scrnwhd         ;Set screen work head adr
            movwf   flash_idw       ;Save screen work adr
    flash_loop
            movf    flash_idw,w     ;Read "FROM" adr
            movwf   fsr             ;Set "FROM" adr
            movf    indf,w          ;Read "FROM" data
            movwf   flash_data      ;Save "FROM" data
            movf    flash_id,w      ;Read "TO" adr
            movwf   fsr             ;Set "TO" adr
            movf    flash_data,w    ;Read "FROM" data
            movwf   indf            ;Write data
            incf    flash_id,f      ;"TO" adr + 1
            incf    flash_idw,f     ;"FROM" adr + 1
            decfsz  flash_lp,f      ;Copy end ?
            goto    flash_loop      ;No. Copy next
            call    led_cnt         ;LED control
            return
Explanation The assignment of workarea is done among the 7th line from the 2nd line. In this routine, it copies the data of the screen workarea on to the screen area. It calls LED control subroutine when finishing copying all data and it controls LEDs.