It seems to have wiped out some of the code..

so the following should have been..

void lcd_putc(U8 c) {
switch (c) {
case 'f' : lcd_send_byte(0,1);break; //clear display
case 'r' : lcd_gotoxy(0,1);break; //return to 1/1
case 'n' : lcd_gotoxy(0,2);break; //newline 1/2
case 'b' : lcd_send_byte(0,0x10);break; //move back one
default : lcd_send_byte(1,c);
}