LG2401281 ( Driver - T6963C ) LCD Source Code 입니다.
ATmega128 사용했고, Compiler는 Codevision AVR 2.04.4a 입니다.

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#define T6963C_COMMAND_SetCursorPointer         0b00100001
#define T6963C_COMMAND_SetOffsetRegister        0b00100010
#define T6963C_COMMAND_SetAddressPointer        0b00100100

#define T6963C_COMMAND_SetTextHomeAddress       0b01000000
#define T6963C_COMMAND_SetTextArea              0b01000001
#define T6963C_COMMAND_SetGraphicHomeAddress    0b01000010
#define T6963C_COMMAND_SetGraphicArea           0b01000011

#define T6963C_COMMAND_WriteMode                0b10000000
    // bit 2~0 : 0x00 - OR Mode
    // bit 2~0 : 0x01 - EXOR Mode
    // bit 2~0 : 0x03 - AND Mode
    // bit 2~0 : 0x04 - Text Attribute Mode
    // bit 3 : 0 - CG ROM Mode
    // bit 3 : 1 - CG RAM Mode
   
    #define WRITE_MODE_OR_MODE                  0x00
    #define WRITE_MODE_EXOR_MODE                0x01
    #define WRITE_MODE_AND_MODE                 0x03
    #define WRITE_MODE_TEXT_ATTRIBUTE_MODE      0x04
    #define WRITE_MODE_CG_RAM_MODE_ON           0x08

    #define T6963C_COMMAND_SetModeOR                0b10000000
    #define T6963C_COMMAND_SetModeEXOR              0b10000001
    #define T6963C_COMMAND_SetModeAND               0b10000011
    #define T6963C_COMMAND_SetModeTextAttribute     0b10000100
    #define T6963C_COMMAND_SetModeCGROM             0b10000000
    #define T6963C_COMMAND_SetModeCGRAM             0b10001000
   

#define T6963C_COMMAND_DisplayMode              0b10010000
    // bit 3 : Graphic On
    // bit 2 : Text On
    // bit 1 : Cursor On
    // bit 0 : Blink On
   
    #define DISPLAY_MODE_GRAPHIC_ON             0x08
    #define DISPLAY_MODE_TEXT_ON                0x04
    #define DISPLAY_MODE_CURSOR_ON              0x02
    #define DISPLAY_MODE_BLINK_ON               0x01
   
    #define T6963C_COMMAND_SetDisplayOff            0b10010000
    #define T6963C_COMMAND_SetCursorOnBlinkOff      0b10010010
    #define T6963C_COMMAND_SetCursorOnBlinkOn       0b10010011
    #define T6963C_COMMAND_SetTextOnGraphicOff      0b10010100
    #define T6963C_COMMAND_SetTextOffGraphicOn      0b10011000
    #define T6963C_COMMAND_SetTextOnGraphicOn       0b10011100
                                      
#define T6963C_COMMAND_SetCursorLine            0b10100000
    // bit 2~0 : 0x00 - 1 Line Cursor
    // bit 2~0 : 0x01 - 2 Line Cursor
    // bit 2~0 : 0x02 - 3 Line Cursor
    // bit 2~0 : 0x03 - 4 Line Cursor
    // bit 2~0 : 0x04 - 5 Line Cursor
    // bit 2~0 : 0x05 - 6 Line Cursor
    // bit 2~0 : 0x06 - 7 Line Cursor
    // bit 2~0 : 0x07 - 8 Line Cursor
   
    #define CURSOR_LINE_1                           0x00
    #define CURSOR_LINE_2                           0x01
    #define CURSOR_LINE_3                           0x02
    #define CURSOR_LINE_4                           0x03
    #define CURSOR_LINE_5                           0x04
    #define CURSOR_LINE_6                           0x05
    #define CURSOR_LINE_7                           0x06
    #define CURSOR_LINE_8                           0x07

    #define T6963C_COMMAND_SetCursorLineTo1         0b10100000
    #define T6963C_COMMAND_SetCursorLineTo2         0b10100001
    #define T6963C_COMMAND_SetCursorLineTo3         0b10100010
    #define T6963C_COMMAND_SetCursorLineTo4         0b10100011
    #define T6963C_COMMAND_SetCursorLineTo5         0b10100100
    #define T6963C_COMMAND_SetCursorLineTo6         0b10100101
    #define T6963C_COMMAND_SetCursorLineTo7         0b10100110
    #define T6963C_COMMAND_SetCursorLineTo8         0b10100111
   
#define T6963C_COMMAND_SetDataAutoWrite         0b10110000
#define T6963C_COMMAND_SetDataAutoRead          0b10110001
#define T6963C_COMMAND_SetAutoReset             0b10110010

#define T6963C_COMMAND_SetDataWriteIncreseADP   0b11000000
#define T6963C_COMMAND_SetDataReadIncreseADP    0b11000001
#define T6963C_COMMAND_SetDataWriteDecreseADP   0b11000010
#define T6963C_COMMAND_SetDataReadDecreseADP    0b11000011
#define T6963C_COMMAND_SetDataWriteMaintainADP  0b11000100
#define T6963C_COMMAND_SetDataReadMaintainADP   0b11000101

#define T6963C_COMMAND_SetScreenPeek            0b11100000
#define T6963C_COMMAND_SetScreenCopy            0b11101000

#define T6963C_COMMAND_SetBitReset              0b11110000
#define T6963C_COMMAND_SetBitSet                0b11111000

#define T6963C_COMMAND_SetSelectBit0            0b11110000
#define T6963C_COMMAND_SetSelectBit1            0b11110001
#define T6963C_COMMAND_SetSelectBit2            0b11110010
#define T6963C_COMMAND_SetSelectBit3            0b11110011
#define T6963C_COMMAND_SetSelectBit4            0b11110100
#define T6963C_COMMAND_SetSelectBit5            0b11110101
#define T6963C_COMMAND_SetSelectBit6            0b11110110
#define T6963C_COMMAND_SetSelectBit7            0b11110111 
                              
#define DATADIR_IN          0x00                     
#define DATADIR_OUT         0xFF
                     
#define T6963C_DATADIR      DDRA        
#define T6963C_DATAIN       PINA
#define T6963C_DATAOUT      PORTA

#define T6963C_WR           PORTC.4
#define T6963C_RD           PORTC.5
#define T6963C_CE           PORTC.2
#define T6963C_CD           PORTC.3
#define T6963C_RST          PORTC.0
#define T6963C_FS           PORTC.1
#define T6963C_BK           PORTC.7 
               
#define T6963C_Graphic_RAM_Area     0x0000                                 
    #define T6963C_Graphic_Screen0      0x0000
    #define T6963C_Graphic_Screen1      0x0F00
    #define T6963C_Graphic_Screen2      0x1E00
    #define T6963C_Graphic_Screen3      0x2D00 
   
    #define SCREEN_0                    0
    #define SCREEN_1                    1
    #define SCREEN_2                    2
    #define SCREEN_3                    3

#define T6963C_Attribute_RAM_Area   0x3C00
#define T6963C_Text_RAM_Area        0x4000
#define T6963C_CG_RAM_Area          0x7C00
                                           
TypeUnionWord GRAPHIC_HOME_ADDRESS;
TypeUnionWord TEXT_HOME_ADDRESS;
TypeUnionWord GRAPHIC_ADDRESS;        

byte GRAPHIC_AREA = 0x1E;       // 8 bit Interval Division 30 x 8 = 240
byte TEXT_AREA = 0x1E;          // 8 bit Interval Division 30 x 8 = 240 
byte OFFSET_RESISTER = 0x0F;    // CG RAM Address is 0x7800 ~ 0x7FFF

#define PIXEL_ON                    1
#define PIXEL_OFF                   0

flash byte MaskTable[] = { 0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80 };
                      
// STATUS.0 : Check Command Execution Capability.
// STATUS.1 : Check Data Read/Write Capability.
// STATUS.2 : Check Auto Mode Data Read Capability.
// STATUS.3 : Check Auto Mode Data Write Capability.
// STATUS.4 : Not Used.
// STATUS.5 : Check Contoller Operation Capability.
// STATUS.6 : Error Flag. Used For Screen Peek and Screen Copy Commands. ( 0:No Error 1:Error )
// STATUS.7 : Check the Blink Condition. ( 0:Display Off 1:Normal Display )
 
byte T6963C_ReadStatus ( void )
{   byte ReturnValue; 
    T6963C_DATADIR = DATADIR_IN;
    T6963C_CD = 1;
    T6963C_CE = 0;
    T6963C_RD = 0;
    #asm ("nop");
    #asm ("nop");
    #asm ("nop");
    #asm ("nop");
    ReturnValue = T6963C_DATAIN;
    T6963C_RD = 1;
    T6963C_CE = 1;
    #asm ("nop");
    #asm ("nop");
    T6963C_DATADIR = DATADIR_OUT;  
    return ReturnValue;
}      

byte T6963C_ReadData ( void )
{   byte ReturnValue; 
    T6963C_DATADIR = DATADIR_IN;
    T6963C_CD = 0;
    T6963C_CE = 0;
    T6963C_RD = 0;
    #asm ("nop");
    #asm ("nop");
    #asm ("nop");
    #asm ("nop");
    ReturnValue = T6963C_DATAIN;
    T6963C_RD = 1;
    T6963C_CE = 1;
    #asm ("nop");
    #asm ("nop");
    T6963C_DATADIR = DATADIR_OUT;
    return ReturnValue;
}      

void T6963C_WriteInstruction ( byte Instruction )
{   T6963C_DATAOUT = Instruction;
    T6963C_CD = 1;
    T6963C_CE = 0;
    T6963C_WR = 0;              
    #asm ("nop");
    #asm ("nop");
    T6963C_WR = 1;
    T6963C_CE = 1;
    #asm ("nop");
    #asm ("nop");
}

void T6963C_WriteData ( byte Data )
{   T6963C_DATAOUT = Data;
    T6963C_CD = 0;
    T6963C_CE = 0;
    T6963C_WR = 0;              
    #asm ("nop");
    #asm ("nop");
    T6963C_WR = 1;
    T6963C_CE = 1;
    #asm ("nop");
    #asm ("nop");
}

void T6963C_WriteCommand0 ( byte Command )
{   while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );           
    T6963C_WriteInstruction ( Command );
}                       

void T6963C_WriteCommand1 ( byte Command, byte Data0 )
{   while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );
    T6963C_WriteData ( Data0 );
    while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );
    T6963C_WriteInstruction ( Command );
}

void T6963C_WriteCommand2 ( byte Command, byte Data0, byte Data1 )
{   while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );
    T6963C_WriteData ( Data0 );
    while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );
    T6963C_WriteData ( Data1 );
    while (( T6963C_ReadStatus() & 0x03 ) != 0x03 );
    T6963C_WriteInstruction ( Command );
}

void T6963C_SetAddress ( word Address )
{   GRAPHIC_ADDRESS.Word = Address;                                         
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetAddressPointer, GRAPHIC_ADDRESS.Byte[0], GRAPHIC_ADDRESS.Byte[1] );
}

void T6963C_SetAddressXY ( word StartX, word StartY )
{   GRAPHIC_ADDRESS.Word = (( StartX >> 0x03 ) + ( GRAPHIC_AREA * StartY ) + GRAPHIC_HOME_ADDRESS.Word );
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetAddressPointer, GRAPHIC_ADDRESS.Byte[0], GRAPHIC_ADDRESS.Byte[1] );
}                              

void T6963C_SetWriteMode ( byte WriteMode )
{   T6963C_WriteCommand0 ( T6963C_COMMAND_WriteMode | WriteMode );
}

void T6963C_Initialize ( void )
{
    T6963C_RST = 0;
    delay_ms (100);
    T6963C_RST = 1;
    delay_ms (10);
                 
    // 8 bit Interval Division 30 x 8 = 240
    T6963C_FS = 0;                        
 
    GRAPHIC_HOME_ADDRESS.Word = T6963C_Graphic_Screen0;  
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetGraphicHomeAddress, GRAPHIC_HOME_ADDRESS.Byte[0], GRAPHIC_HOME_ADDRESS.Byte[1] );
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetGraphicArea, GRAPHIC_AREA, 0x00 );

    TEXT_HOME_ADDRESS.Word  = T6963C_Text_RAM_Area;
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetTextHomeAddress, TEXT_HOME_ADDRESS.Byte[0], TEXT_HOME_ADDRESS.Byte[1] );
    T6963C_WriteCommand2 ( T6963C_COMMAND_SetGraphicArea, TEXT_AREA, 0x00 );

    T6963C_WriteCommand2 ( T6963C_COMMAND_SetOffsetRegister, OFFSET_RESISTER, 0x00 );

    T6963C_SetWriteMode ( WRITE_MODE_EXOR_MODE );
    T6963C_WriteCommand0 ( T6963C_COMMAND_DisplayMode | DISPLAY_MODE_GRAPHIC_ON );
}