; ********************************************
; Function :       5X7 LED點(diǎn)陣顯示示例程序   *

; MicroProcessor : HT48R50A-1/28SKDIP-A      *

; Author:         www.picavr.com             *
; Crystal :       4MHz                       *
; ********************************************

#INCLUDE                HT48R50A-1.INC
;---------------------------------------------
DATA    .SECTION        AT 60H  'DATA'
LOOP_COUNTER            DB      ?       ;[60H]
DISPLAY_COUNTER         DB      ?       ;[61H]
DISPLAY_DATA            DB      ?       ;[61H]
INDEX                   DB      ?       ;[62H]
SCAN_DATA               DB      ?       ;[63H]
SCAN_COUNTER            DB      ?       ;[64H]
DELAY_COUNTER           DB      ?       ;[65H]
;---------------------------------------------
CODE    .SECTION        AT 00H  'CODE'
        ORG     00H
        JMP     START
START:
        CLR     PAC
        CLR     PBC
        CLR     PCC
        CLR     TBLP
        CLR     INDEX
        MOV     A,10H
        MOV     LOOP_COUNTER,A
LOOP:
        MOV     A,0C0H
        MOV     DISPLAY_COUNTER,A
DISPLAY:
        MOV     A,INDEX
        MOV     TBLP,A
        TABRDL  DISPLAY_DATA
        MOV     A,DISPLAY_DATA
        MOV     PA,A
        CLR     PB
        CALL    DELAY
        SET     PB
        CALL    DELAY
        INC     TBLP
        MOV     A,0F7H
        MOV     SCAN_DATA,A
        MOV     A,04H
        MOV     SCAN_COUNTER,A
SCAN:
        TABRDL  DISPLAY_DATA
        MOV     A,DISPLAY_DATA
        MOV     PA,A
        MOV     A,SCAN_DATA
        MOV     PC,A
        CALL    DELAY
        SET     PC
        CALL    DELAY
        INC     TBLP
        RR      SCAN_DATA
        SDZ     SCAN_COUNTER
        JMP     SCAN
        SDZ     DISPLAY_COUNTER
        JMP     DISPLAY
        MOV     A,5
        ADDM    A,INDEX
        SDZ     LOOP_COUNTER
        JMP     LOOP
        JMP     START
        RET
;---------------------------------------------
DELAY   PROC
        MOV     A,0FFH
        MOV     DELAY_COUNTER,A
WAIT:
        SDZ     DELAY_COUNTER
        JMP     WAIT
        RET
DELAY   ENDP
;---------------------------------------------
        ORG     0F00H
        DC      0C1H,0BEH,0BEH,0BEH,0C1H ;0
        DC      0FEH,0FEH,080H,0DEH,0FEH ;1
        DC      0CEH,0B6H,0BAH,0BCH,0CEH ;2
        DC      0C9H,0B6H,0B6H,0BEH,0DDH ;3
        DC      0FBH,080H,0DBH,0EBH,0F3H ;4
        DC      0B9H,0B6H,0B6H,0B6H,086H ;5
        DC      0D9H,0B6H,0B6H,0B6H,0C1H ;6
        DC      08FH,0B3H,0BCH,0BFH,09FH ;7
        DC      0C9H,0B6H,0B6H,0B6H,0C9H ;8
        DC      0C1H,0B6H,0B6H,0B6H,0CDH ;9
        DC      0E0H,0DBH,0BBH,0DBH,0E0H ;A
        DC      0C9H,0B6H,0B6H,0B6H,080H ;B
        DC      0DDH,0BEH,0BEH,0BEH,0C1H ;C
        DC      0E3H,0DDH,0BEH,0BEH,080H ;D
        DC      0BEH,0B6H,0B6H,0B6H,080H ;E
        DC      0BFH,0B7H,0B7H,0B7H,080H ;F
;---------------------------------------------
        END