SDCC Ejemplo 3 Tmr0

/*Recuerden esto se genero con Piklab pongan el include segun su PIC, 20Mhz*/


typedef unsigned int word;
word at 0x2007 CONFIG = _HS_OSC & _WDT_OFF & _LVP_OFF &_DEBUG_OFF & _CPD_OFF &_PWRTE_ON &_BODEN_ON;

void delay_1ms(void);
void delay_100ms(void);

void main() {
int a;
TRISB= 0b00000000;
INTCON=0b00000000;

T0CS = 0;
TMR0 = 0;
PSA = 0;

while(1){
PORTB=0b11110000;
delay_100ms();
PORTB=0b11100000;
delay_100ms();
PORTB=0b11000000;
delay_100ms();
PORTB=0b10000000;
delay_100ms();
}
}
void delay_100ms(){
int a;
for (a=0;a<=100;a++){
delay_1ms();
}
}

void delay_1ms()
{
PS2=1; PS1=0; PS0=0;
T0IF = 0;
TMR0=100;
while(T0IF==0);
}