Software & IDEs HOT8051도트입니다

8051을 이용한 16*16도트 매트릭스 모듈을 6개 연결해 디스플레이 를 하려고 하는 데  에러가 생깁니다
에러 내용은 8051용량 초과라고 하는데 어떻게 소스를 고쳐야 할까요 ~~도와주세요~~


#include <io51.h>

bit P1_0 = 0x90;
bit P1_1 = 0x91;
bit P1_2 = 0x92;
bit P1_3 = 0x93;
bit P1_4 = 0x94;
bit P1_5 = 0x95;
bit P1_6 = 0x96;
bit P1_7 = 0x97;

#define R_DATA P1_4
#define G_DATA P1_5
#define LATCH  P1_6
#define CLOCK  P1_7

unsigned int FONT1[16] = {0x0000 , 0xfafa, 0x2222, 0x2622, 0x5253, 0x8a8a, 0x8a8a, 0x8a8a, 0x0000, 0x80fa
                           0xfe0a, 0x000a, 0x002b, 0x0022, 0x0022, 0x00fa};
static unsigned int FONT2[10], FONT3[10]; //, FONT[16];                        
unsigned int font1, font2, font3;

// unsigned int font;

unsigned char MatrixCount;
unsigned char NumberOfMatrix;
char addr;

void color (unsigned char color_select)
{
    int i;
    if(color_select==1){                     
           for(i=0; i<16*NumberOfMatrix; i++){
                  if(font3 & 0x8000){        //폰트 소스 최상위 비트가 1일때
                      R_DATA = 1;             //R_DATA,G_DATA  1,0일때 적색
                      G_DATA = 0;             //0,1일때 녹색,  1,1일때 오렌지색으로 점등
                  }
                  else{                   //폰트 소스 최상위 비트가 0일때
                      R_DATA = 0;
                      G_DATA = 0;
                  }
                  CLOCK = 1;
                  CLOCK = 0;

                  font3= font3 << 1;
                  if(font2 & 0x8000)
                    font3= 0x0001 | font3;                  
                  font2= font2 << 1;                                                   
                  if(font1 & 0x8000)
                    font2= 0x0001 | font2;
                  font1= font1 << 1;     //폰트 Hex값 1bit를 왼쪽으로 Shift
           }  
           P1= (P1 & 0xf0) | addr;
           LATCH= 0;
           LATCH= 1; 
           addr++;                    
     }
     else if(color_select==2){
            
   for(i=0 ; i<16; i++){
       if(font3 & 0x8000){        
                  R_DATA = 0;          
                  G_DATA = 1;           
                  }
                  else{                 
                    R_DATA = 0;
                    G_DATA = 0;
                    }
                    CLOCK = 1;
                    CLOCK = 0;
 //     font = font << 1; 
  }
  P1 = (P1 & 0xf0) |addr;
             LATCH = 0;
                    LATCH = 1;
   }
 else if(color_select==3) {
    for(i=0 ; i<16; i++){
         if(font3 & 0x8000){       
                  R_DATA = 1;            
                  G_DATA = 1;            
                  }
                  else{                  
                    R_DATA = 0;
                    G_DATA = 0;
                    }
                    CLOCK = 1;
                    CLOCK = 0;
 //                   font = font << 1; 
   }
             P1 = (P1 & 0xf0) |addr; 
      LATCH = 0;
                    LATCH = 1;
 }                
}

void shift(unsigned char shift_mode)
{
//     unsigned int FONTS;
    
     int i;
          if(shift_mode==1){ 
       for(i=0; i<10; i++){         // 라인 증가식
                 if(FONT3[i] & 0x8000) {
                    FONT3[i]= FONT3[i] << 1;
                    if(FONT2[i] & 0x8000)
                      FONT3[i]= FONT3[i] | 0x0001;                   
                    FONT2[i]=FONT2[i] << 1;                                                   
                    if(FONT1[i] & 0x8000)
                      FONT2[i]= FONT2[i] | 0x0001;
                    FONT1[i]= FONT1[i] << 1;
                   
                    FONT1[i]= FONT1[i] | 0x0001;          
                    MatrixCount=0;                  
                 }
                 else{
                    FONT3[i]= FONT3[i] << 1;
                    if(FONT2[i] & 0x8000)
                      FONT3[i]= FONT3[i] | 0x0001;                   
                    FONT2[i]=FONT2[i] << 1;                                                   
                    if(FONT1[i] & 0x8000)
                      FONT2[i]= FONT2[i] | 0x0001;
                    FONT1[i]= FONT1[i] << 1;
                 }
              }
          }
 /*         else if(shift_mode==2){
              for(i=0; i<16; i++) {
                 if(FONT[i] & 0x0001) {
                   FONTS = FONT[i] >> 1;
                   FONTS = FONTS | 0x8000;
                   FONT[i] = FONTS; }
                 else{
                   FONTS = FONT[i] >> 1;
                   FONT[i] = FONTS;
                 }
              }
         } */
}
                   
void main (void)
{
    int j;

    P1= 0x00;
   
    NumberOfMatrix=6;
    MatrixCount=0;

    while(1)
    {
      addr= 0;
        for(j=0; j<10; j++){    // 라인 증가식?
        font3= FONT3[j];
        font2= FONT2[j];
        font1= FONT1[j];
         color(1);   
      }
      MatrixCount++;
      shift(1);                            
   }               
}