EM78C156E+1621 display assembly example

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 em78c156e+1621 shows assembly example

; XS1621 ,3.58,OUT 20001 /6/22

INDI EQU 0X0
RT CC     EQU 0X1

PC      EQU     0X2
STATUS  EQU     0X3
FSR     EQU     0X4
PORT5   EQU     0X5
PORT6   EQU     0X6
STACK_A EQU     0X10
STACK_S EQU     0X11
XS1     EQU     0X12
XS2     EQU     0X13
XS3     EQU     0X15
XS4     EQU     0X16
XS5     EQU     0X17
XS6     EQU     0X18
XS7     EQU     0X19
XS8     EQU     0X1A
JP1     EQU     0X1B
JP2     EQU     0X1C
JP3     EQU     0X1D
JP4     EQU     0X1E
XS9     EQU     0X20
XS10    EQU     0X21
        ORG     0
        JMP     MAIN
        ORG     8
        MOV     STACK_A,A
        SWAP    STACK_A
        SWAPA   STATUS
        MOV     STACK_S,A
        CLR     0XF
        SWAPA   STACK_S
        MOV     STATUS,A
        SWAPA   STACK_A
        RETI
BIAO:
        ADD     0X2,A
        RETL    @0B11101110     ;0
        RETL    @0B01001000     ;1
        RETL    @0B10111010     ;2
        RETL    @0B11011010     ;3
        RETL    @0B01011100     ;4
        RETL    @0B11010110     ;5
        RETL    @0B11110110     ;6
        RETL    @0B01001010     ;7
        RETL    @0B11111110     ;8
        RETL    @0B01011110     ;9
        RETL    @0B00000000     ;A
XSZW:
        MOV     A,JP1
        CALL    BIAO
        MOV     XS3,A
        MOV     A,JP2
        CALL    BIAO
        MOV     XS4,A
        MOV     A,JP3
        CALL    BIAO
        MOV     XS5,A
        MOV     A,JP4
        CALL    BIAO
        MOV     XS6,A
        MOV     A,@7
        MOV     XS1,A
AWS:
        RLC     XS10
        RLC     XS9
        RLC     XS8
        RLC     XS7
        JBS     XS6,1
        JMP     ASD1
        BS      XS10,4
        JMP     ASG1
ASD1:
        BC      XS10,4
ASG1:
        RRC     XS6
        RLC     XS10
        RLC     XS9
        RLC     XS8
        RLC     XS7
        JBS     XS5,1
        JMP     ASD2
        BS      XS10,4
        JMP     ASG2
ASD2:
        BC      XS10,4
ASG2:
        RRC     XS5
        RLC     XS10
        RLC     XS9
        RLC     XS8
        RLC     XS7
        JBS     XS4,1
        JMP     ASD3
        BS      XS10,4
        JMP     ASG3
ASD3:
        BC      XS10,4
ASG3:
        RRC     XS4
        RLC     XS10
        RLC     XS9
        RLC     XS8
        RLC     XS7
        JBS     XS3,1
        JMP     ASD4
        BS      XS10,4
        JMP     ASG4
ASD4:
        BC      XS10,4
ASG4:
        RRC     XS3
        DJZ     XS1
        JMP     AWS
        RET
YSA:
        MOV     A,@2
        MOV     XS3,A
LOP1:
        NOP
        DJZ     XS3,A
        JMP     LOP1
        RET
XSS:                     ;HT1621 XS 8-BITS  COMMAND MODE
        BS      PORT5,1
        BC      PORT5,0    ;CS=0
        CALL    YSA
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1   ;DATA=1
        BC      PORT5,2
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1   ;DATA=0
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1  ;DATA=0
        MOV     A,@8
        MOV     XS1,A
XSC:
        JBS     XS2,7
        JMP     XSD
        BS      PORT5,2   ;DATA=1
        JMP     XSG
XSD:
        BC      PORT5,2    ;DATA=0
XSG:
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1
        RLC     XS2
        DJZ     XS1
        JMP     XSC
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1     ;DATA=?
        BS      PORT5,0    ;CS=1
        RET
XSA:            ;HT1621XS WRITE MODE
        MOV     A,@8
        MOV     XS1,A
WXC:
        JBS     XS2,7
        JMP     WXD
        BS      PORT5,2    ;DATA=1
        JMP     WXG
WXD:
        BC      PORT5,2    ;DATA=0
WXG:
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1
        RLC     XS2
        DJZ     XS1
        JMP     WXC
        RET
MAIN:   
        MOV     A,@0X0
        IOW     0X0E 
        MOV     A,@0B11000000
        CONTW
        CLR     0X0F
        MOV     A,@0X01
        IOW     0X0F
        ENI
        MOV     A,@0X10
        MOV     0X4,A
LOPKN:
        MOV     A,@0
        MOV     0X0,A
        JBS     0X4,6
        JMP     KOL
        JMP     KIL
KOL:
        NOP
        INC     0X4
        JMP     LOPKN
KIL:
        BS      0X4,6
        MOV     A,@0B11110000
        IOW     PORT5
        CLR     PORT5
        MOV     A,@0B11111111
        IOW     PORT6
        CLR     PORT6
        NOP
        MOV     A,@0x0F
        MOV     PORT5,A
        MOV     A,@8
        MOV     JP1,A
        MOV     A,@8
        MOV     JP2,A
        MOV     A,@0
        MOV     JP3,A
        MOV     A,@9
        MOV     JP4,A
        CALL    XSZW
        BC      PORT5,0   ;CS=0
        CALL    YSA
        BS      PORT5,0   ;CS=1
        CALL    YSA
        BC      PORT5,0   ;CS=0
        CALL    YSA
        BS      PORT5,0   ;CS=1
        CALL    YSA
        MOV     A,@0B11100011 ;COMMAND NORAML MODE
        MOV     XS2,A
        CALL    XSS
        MOV     A,@0B00011000   ;SYSTEM RC 256K
        MOV     XS2,A
        CALL    XSS
        MOV     A,@0B00101001   ;BIAS 1/3 4 COMMONS
        MOV     XS2,A
        CALL    XSS
        MOV     A,@0B00000001   ;SYS EN
        MOV     XS2,A
        CALL    XSS
        MOV     A,@0B00001001   ;TONE ON
        MOV     XS2,A
        CALL    XSS
        MOV     A,@0B01000000   ;WRITE
        MOV     XS2,A
        BC      PORT5,0         ;CS=0
        CALL    YSA
        BS      PORT5,2
        BC      PORT5,1
        CALL    YSA
        BS      PORT5,1         ;DATA=1
        CALL    XSA
        MOV     A,XS7     ;1
        MOV     XS2,A
        CALL    XSA
        MOV     A,XS8       ;2
        MOV     XS2,A
        CALL    XSA
        MOV     A,XS9     ;3
        MOV     XS2,A
        CALL    XSA
        MOV     A,XS10       ;4
        MOV     XS2,A
        CALL    XSA
        MOV     A,@0XFF        ;5
        MOV     XS2,A
        CALL    XSA
        BS      PORT5,0   ;CS=1
        MOV     A,@0B00000011   ;LCD ON
        MOV     XS2,A
        CALL    XSS
        NOP
KK:
        NOP
        NOP
        NOP
        NOP
        NOP
        JMP     KK
        EOP


 


Keywords:EM78C156E Reference address:EM78C156E+1621 display assembly example

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