SP0256-017 says some numbers and plays little melodies

I just received an SP0256-017 purchased on Ebay as the one on this picture from Flickr.

This version of the SP0256 was designed for talking clocks. I work with the help of a dedicated EPROM which hold the code for the numbers (without the EPROM, it can say the numbers from 0 to 10 but then it hangs). This version cannot says the allophones as it’s bigger brother the SP0256-AL2 variant

I found the data sheet here but the quality of the scan is quite poor. I used the schematics from the SP0256 to understand what to do.

The sound are quite funny and I couldn’t resist posting a little message just to let you ear this chip.

I just coded a loop to ear this table.

/* SP0256-017
 * demo all 36 sounds
 */

// Arduino - SPO
// Pin 9   -  8
// Pin 10  -  20
// Pin 0,7 - Datas
 
#define SBY 9
#define ALD 10

void setup()
{
  
  for (int p=0; p<=8; p++) {
    pinMode(p, OUTPUT);
  }
  
  pinMode(ALD, OUTPUT);
  pinMode(SBY, INPUT);
  
  digitalWrite(ALD, HIGH);
}

void loop()
{
  for (int p=0; p<=36; p++) {
   
    PORTD = p;
    // Set !ADL=0 for 2usec to tell the chip to read
    digitalWrite(ALD, LOW);
    delayMicroseconds(2);
    digitalWrite(ALD, HIGH);
   // Wait for SBYto comme to 1 (standby) to indicate chip is done speaking
    while (digitalRead(SBY) == 0);
    
    delay(100);
    }
    
   delay(2000); // delay 2 sec between test
}