Thread: change LCD port for microcontroller

This is the library coding for LCD display...
in this coding..the LCD display is defined to be connected to port B in a microcontroller,

anyone knows how to change this coding to make the LCD display connected to port C instead..
anyone?

Code:

#define use_portb_lcd TRUE
         struct lcd_pin_map {
             BOOLEAN enable;
             BOOLEAN rs;
             BOOLEAN rw;
             BOOLEAN unused;
             int data: 4;
}lcd;

#if defined(_PCH_)
#if defined use_portb_lcd
#byte lcd = 0xF81
#else
#byte lcd = 0xF83
#endif
#else
#if defined use_portb_lcd
#byte lcd = 6
#else
#byte lcd = 8
#endif
#endif

#if defined use_portb_lcd
#define set_tris_lcd(x) set_tris_b(x)
#else
#define set_tris_lcd(x) set_tris_d(x)
#endif

#define lcd_type 2 
#define lcd_line_two 0x40

BYTE const LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xc, 1, 6};

struct lcd_pin_map const LCD_WRITE = {0, 0, 0, 0, 0};
struct lcd_pin_map const LCD_READ = {0, 0, 0, 0, 15};

BYTE lcd_read_byte() {
      BYTE low, high;
      set_tris_lcd(LCD_READ);
      lcd.rw=1;
      delay_cycles(1);
      lcd.enable = 1;
      delay_cycles(1);
      high = lcd.data;
      lcd.enable = 0;
      delay_cycles(1);
      lcd.enable = 1;
      delay_us(1);
      low = lcd.data;
      lcd.enable = 0;
      set_tris_lcd(lCD_WRITE);
      return ( (high<<4) | low);

}

void lcd_send_nibble(BYTE n) {
      lcd.data = n;
      delay_cycles(1);
      lcd.enable = 1;
      delay_us(2);
      lcd.enable = 0;
}

void lcd_send_byte( BYTE address, BYTE n) {

        lcd.rs = 0;
        while ( bit_test(lcd_read_byte(),7) );
        lcd.rw = address;
        delay_cycles(1);
        lcd.rw = 0;
        delay_cycles(1);
        lcd.enable = 0;
        lcd_send_nibble(n >> 4);
        lcd_send_nibble(n & 0xf);
}

void lcd_init() {
         BYTE i;
         set_tris_lcd(LCD_WRITE);
         lcd.rs = 0;
         lcd.rw = 0;
         lcd.enable = 0;
         delay_ms(15);
         for(i=1;i<=3;++i) {
         lcd_send_nibble(3);
         delay_ms(5);
         }
         lcd_send_nibble(2);
         for (i=0; i<=3;++i)
            lcd_send_byte(0,LCD_INIT_STRING[i]);
}

void lcd_gotoxy(BYTE x, BYTE y) {
BYTE address;

if (y!=1)
address=lcd_line_two;
else
address=0;
address+=x-1;
lcd_send_byte(0,0x80|address);
}

void lcd_putc( char c) {
switch (c) {
case '\f'   : lcd_send_byte(0,1);
              delay_ms(2);
                                    break;
case '\n'   : lcd_gotoxy(1,2);      break;
case '\b'   :lcd_send_byte(0,0x10); break;

default     : lcd_send_byte(1,c);   break;
}
}

char lcd_getc(BYTE x, BYTE y) {
char value;

lcd_gotoxy(x,y);
while ( bit_test (lcd_read_byte(), 7) );
lcd.rs=1;
value = lcd_read_byte();
lcd.rs=0;
return(value);
}