Super Mario on floppy-drive

Interfacing the Floppy Drive with Arduino

Connect the 2nd header of the floppy drive cable to connect to the floppy drive itself.
Then, on the end that you normaly connect to your motherboard, find pin 1 (see the red wire)

Connect pin 11 & 12 together.
Connect pins 17 & 19 to ground.
Connect pin 18 to digital 2 on the arduino
Connect pin 20 to digital 3 on the arduino

Basic Code

 void setup()
 {
   pinMode(13, OUTPUT);
   pinMode(2, OUTPUT);
   pinMode(3, OUTPUT);
 }
 
 void loop()
 {
   reset();
   digitalWrite(2, HIGH);
   delay(20);
   digitalWrite(2, LOW);
 }
 
 void reset()
 {
   digitalWrite(3, HIGH);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(2, HIGH);
   digitalWrite(2, LOW);
   digitalWrite(3, LOW);
 }