PIC Vietnam - vấn đề ram ngoài Pic

Em mới học Pic, không hiểu lắm về các timer. Mong các Anh chuyển giup đoạn code này sang chi PIC, Em đã chuyển được 1 phần, nhưng đoạn sau thì tit. Cảm ơn các Anh.
#include<reg2051.h>
#include<string.h>
#include<stdio.h>
#include<ctype.h>
#include<absacc.h>
#include <math.h>
#include<intrins.h>
#include<stdlib.h>
//***Khai bao bien****
sbit Clock=P1^0;
sbit STcp =P1^1;
sbit Data =P1^2;

sbit SelGre1=P1^3;
sbit SelGre2=P1^4;
sbit SelRed1=P1^5;
sbit SelRed2=P1^6;

sbit R=P3^2;
sbit Y=P3^3;
sbit G=P3^4;
//*************
unsigned char Code_7S[10]={0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xF 6};//={0xDE,0x50,0xEC,0xF8,0x72,0xBA,0xBE,0xD0,0xFE,0xF A};
unsigned char LED_BUF[2];

unsigned char tic=0,tic2=0;
Sig_in,Num_Err=0;

char G_inc=0,G_dec=0,
R_inc=0,R_dec=0;

bit Flag_1s;
//**************************************
//**************************************
void wait (unsigned int input){
while (input--){;}
}
void Disp_led(char input){
char i;
if(input<0)input=0;
if(input<100){
LED_BUF[0]=Code_7S[input/10];
LED_BUF[1]=Code_7S[input%10];
}
STcp=0;
Clock=0;
for(i=0;i<=7;i++){
if((LED_BUF[0]&0x80)==0)Data=0;
else Data=1;
Clock=1;
LED_BUF[0]=LED_BUF[0]<<1;
Clock=0;
}
for(i=0;i<=7;i++){
if((LED_BUF[1]&0x80)==0)Data=0;
else Data=1;
Clock=1;
LED_BUF[1]=LED_BUF[1]<<1;
Clock=0;
}
STcp=1;
}
void Init_time(void){
while(G);
TR0=1;
while(!G)if(Flag_1s){Flag_1s=0;G_inc++;}
TR0=0;TH0=0xD8;TL0=0xF0;tic=0;
if(G_inc>0){G_dec=G_inc;G_inc=0;}
while(R);
TR0=1;
while(!R)if(Flag_1s){Flag_1s=0;R_inc++;}
TR0=0;TH0=0xD8;TL0=0xF0;tic=0;
if(R_inc>0){R_dec=R_inc;R_inc=0;}
}

void main(void){
SelGre1=1;SelGre2=1;
SelRed1=1;SelRed2=1;
wait(5000);
Flag_1s=0;
//---Init timer0--
TMOD=0x11;//khoi tao cho Timer0 o che do timer 16 bits
TR0=0;TH0=0xD8;TL0=0xF0;tic=0;
ET0=1;//cho phep ngat Timer0
//---Init timer1--
EA=1;//Cho phep ngat toan cuc
Init_time();
//***********
while(1){
while(G);
TR0=1;Disp_led(G_dec);SelGre1=0;SelGre2=0;SelRed1= 1;SelRed2=1;
while(!G)if(Flag_1s){Flag_1s=0;G_inc++;G_dec--;Disp_led(G_dec);}
TR0=0;TH0=0xD8;TL0=0xF0;tic=0;
if(G_inc>0){G_dec=G_inc;G_inc=0;}
SelGre1=1;SelGre2=1;
SelRed1=1;SelRed2=1;
while(R);
TR0=1;Disp_led(R_dec);SelGre1=1;SelGre2=1;SelRed1= 0;SelRed2=0;
while(!R)if(Flag_1s){Flag_1s=0;R_inc++;R_dec--;Disp_led(R_dec);}
TR0=0;TH0=0xD8;TL0=0xF0;tic=0;
if(R_inc>0){R_dec=R_inc;R_inc=0;}
}
}
//----------------------------------------------------------------------------------------------------------
void INTTimer0_10ms(void) interrupt 1{
TR0=0;TH0=0xD8;TL0=0xF0;TR0=1;
tic++;
if(tic>=100){
Flag_1s=1;
tic=0;
}
}

Và đây là đoạn Em sửa:
#include <18F4431.h>
#include <math.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
//***Khai bao bien****
#define Clock PIN_B0
#define STcp PIN_B1
#define Data PIN_B2

#define SelGre1 PIN_B3
#define SelGre2 PIN_B4

#define SelRed1 PIN_B5
#define SelRed2 PIN_B6

#define R PIN_B7
#define Y PIN_D0
#define G PIN_D1
//*************
unsigned char Code_7S[10]={0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xF 6};//={0xDE,0x50,0xEC,0xF8,0x72,0xBA,0xBE,0xD0,0xFE,0xF A};
unsigned char LED_BUF[2];

unsigned char tic=0,tic2=0,
Sig_in,Num_Err=0;

char G_inc=0,G_dec=0,
R_inc=0,R_dec=0,Flag_1s,TMOD,count;

//**************************************
//**************************************

void Disp_led(char input){
char i;
if(input<0)input=0;
if(input<100){
LED_BUF[0]=Code_7S[input/10];
LED_BUF[1]=Code_7S[input%10];
}
output_low(STcp);
output_low (Clock);
for(i=0;i<=7;i++){
if((LED_BUF[0]&0x80)==0)output_low(Data);
else output_high(Data);
output_high (Clock);
LED_BUF[0]=LED_BUF[0]<<1;
output_low (Clock);
}
for(i=0;i<=7;i++){
if((LED_BUF[1]&0x80)==0)output_low (Data);
else output_high (Data);
output_high (Clock);
LED_BUF[1]=LED_BUF[1]<<1;
output_low(Clock);
}
output_high (STcp);
}
....
Không viết được nữa, hiii..Các Ah giúp Em nhé.