Lab6_2.c

#include "MonDallas.h"
#include <stdio.h>

void delay(UI);

void main(void) {
  SCON0 = 0x50;
  TMOD |= 0x21;
  TH1 = 0xFF;
  PCON |= 0x80;
  TR1 = 1;
  TI_0 = 1;
  P1 = 0xFE;
  while (1) {
    delay(50);
    printf("%bX\n", P1);
  }
}

void delay(UI i) {
  for (TR0 = 1; i; i--) { TH0 = 0xDC;
    while (!TF0);
    TF0 = 0;
  } TR0 = 0;
}