#include "letter.h"   // Letters Signatures.
#include "display.h"  // TV Display Parameters



//==================================
// put a small character on the screen
// x-cood must be on divisible by 4 
// c is index into bitmap
void video_smallchar(char x, char y, char c)  
{ 
  char mask;
  int i;
  i=((int)x>>3) + ((int)y<<4) ;
  if (x == (x & 0xf8)) mask = 0x0f;     //f8
  else mask = 0xf0;

  screen[i] =    (screen[i] & mask) | (smallLettersBitmap[c][0] & ~mask); 
  screen[i+16] = (screen[i+16] & mask) | (smallLettersBitmap[c][1] & ~mask);
  screen[i+32] = (screen[i+32] & mask) | (smallLettersBitmap[c][2] & ~mask);
  screen[i+48] = (screen[i+48] & mask) | (smallLettersBitmap[c][3] & ~mask);
  screen[i+64] = (screen[i+64] & mask) | (smallLettersBitmap[c][4] & ~mask); 
}  

//==================================
// put a string of small characters on the screen
// x-cood must be on divisible by 4 
void video_putsmalls(char x, char y, char *str)
{
  char i ;
  for (i=0; str[i]!=0; i++)
  {  
    if (str[i]>=0x30 && str[i]<=0x3a) 
      video_smallchar(x,y,str[i]-0x30);
    else if (str[i] == 0x20)
      video_smallchar(x,y,12);
    else video_smallchar(x,y,str[i]-0x40+12);
    x = x+4;  
  }
}