// Simulasi Proses Aritmatika Mikroprosesor
// Model Register A, B, dan Accumulator (ACC)

int A = 10; // Register A
int B = 8;  // Register B
int ACC = 0; // Accumulator

int ledMerah = 4;   // LED Merah
int ledHijau = 5;   // LED Hijau

void setup() {
  pinMode(ledMerah, OUTPUT);
  pinMode(ledHijau, OUTPUT);
  Serial.begin(9600);

  Serial.println("=== Simulasi Proses Aritmatika Mikroprosesor ===");

  // ===== Instruksi 1: Penjumlahan =====
  Serial.println("\n[Instruksi 1] ADD A, B");
  ACC = A + B;
  Serial.print("Register A = "); Serial.println(A);
  Serial.print("Register B = "); Serial.println(B);
  Serial.print("Accumulator (A + B) = "); Serial.println(ACC);

  // Logika kontrol LED
  if (ACC > 15) {
    digitalWrite(ledHijau, HIGH);
    digitalWrite(ledMerah, LOW);
    Serial.println("Hasil > 15: LED Hijau ON");
  } else {
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledHijau, LOW);
    Serial.println("Hasil <= 15: LED Merah ON");
  }

  delay(2000); // jeda 2 detik agar terlihat jelas

  // ===== Instruksi 2: Pengurangan =====
  Serial.println("\n[Instruksi 2] SUB A, B");
  ACC = A - B;
  Serial.print("Register A = "); Serial.println(A);
  Serial.print("Register B = "); Serial.println(B);
  Serial.print("Accumulator (A - B) = "); Serial.println(ACC);

  if (ACC > 15) {
    digitalWrite(ledHijau, HIGH);
    digitalWrite(ledMerah, LOW);
    Serial.println("Hasil > 15: LED Hijau ON");
  } else {
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledHijau, LOW);
    Serial.println("Hasil <= 15: LED Merah ON");
  }
}

void loop() {
  // Tidak ada proses berulang
}