Read PROM on Arduino MEGA 2650

readROM.ino

// read 2764-27512 ROM by Arduino MEGA 2650
//

//  unsigned char Data[8] = {46,48,50,53,51,49,47,45};
//  unsigned char Addr[16] = {44,42,40,38, 36,34,32,30, 33,35,41,37, 28,31,29,26};

  unsigned char Data[8] = {46,48,50,53,51,49,47,45};
  unsigned char Addr[16] = {44,42,40,38, 36,34,32,30, 33,35,41,37, 28,31,29,26};
  unsigned char OE = 39 ;
  unsigned char CS = 43 ;
  unsigned char TMM2364_Vpp = Addr[15];
  unsigned char  TMM2364_CS1 = Addr[14];
  unsigned char  TMM2364_CS2 = Addr[13];

  unsigned int romsize = 13 ; // 2764 [12:0]
  unsigned int maxaddr = 1 ;

  unsigned int btnA=52;


void setup() {
  for(int i=0;i<8;i++) pinMode(Data[i],INPUT);
  for(int i=0;i<15;i++) { pinMode(Addr[i],OUTPUT); digitalWrite(Addr[i],0); }
  pinMode(OE,OUTPUT); digitalWrite(OE,1);
  pinMode(CS,OUTPUT); digitalWrite(CS,1);

  for(int i=0;i<romsize;i++) maxaddr *=2 ;
  maxaddr-- ;

  pinMode(btnA,INPUT_PULLUP);

  Serial.begin(9600);
  Serial.println();

  //digitalWrite(TMM2364_Vpp,1);
  //digitalWrite(TMM2364_CS1,1);
  //digitalWrite(TMM2364_CS2,1);

  digitalWrite(OE,0);
  digitalWrite(CS,0);

}

void loop() {
  unsigned char d;

  while(digitalRead(btnA)) ;

  Serial.println();
  Serial.print("@00000000");
  // Serial.println();

  for (unsigned int aloop=0; aloop<=maxaddr; aloop++) {
    setAddr(aloop,romsize);
    d=getData();

    if (aloop%16==0) {
      Serial.println();  // sprinthex(aloop,4); Serial.print(" :");
    } else {
      Serial.print(" ");
    }
    sprinthex(d,2);
  }
  Serial.println();
  delay(1000);
}

/*
void setAddr(unsigned int address, unsigned int size) {
  int t;
  if (size>=16 || size==0) return;
  for (int i=0; i<=size-1; i++) {
    t = (address & 1) ? 1 : 0 ;
    digitalWrite(Addr[i],t);
    address = address >> 1 ;
  }
}
*/
void setAddr(unsigned int address, unsigned int size) {
  int t=1;
  if (size>=16 || size==0) return;
  for (int i=0; i<=size-1; i++) {
    digitalWrite(Addr[i], (address & t)?HIGH:LOW);
    t *=2 ;
    delay(1);
  }
}

/*
unsigned char getData(void) {
  unsigned char s,t ;
  s=0;
  for(int i=0; i<8; i++) {
    s = s << 1 ;
    t = Data[i]; t=digitalRead(t);
    delay(5);
    if (t) s = s | 1 ;
  }
  return s;
}
*/
unsigned char getData(void) {
  unsigned char s ;
  s=0;
  if (digitalRead(Data[0])) s |= 1 ;
  if (digitalRead(Data[1])) s |= 2 ;
  if (digitalRead(Data[2])) s |= 4 ;
  if (digitalRead(Data[3])) s |= 8 ;
  if (digitalRead(Data[4])) s |= 16 ;
  if (digitalRead(Data[5])) s |= 32 ;
  if (digitalRead(Data[6])) s |= 64 ;
  if (digitalRead(Data[7])) s |= 128 ;
  return s;
}


void sprinthex(unsigned int x, int dg) {
  if (dg>=4) if (x<0x1000) Serial.print("0");
  if (dg>=3) if (x<0x100) Serial.print("0");
  if (dg>=2) if (x<0x10) Serial.print("0");
  Serial.print(x,HEX);
}