usign L293D to control motors

Using Arduino Motors, Mechanics, Power and CNC
#1

i have a 2A brushed motor and a L293D driver IC board… i ran the below code using an arduino uno board…
the motors runs at very high rpm even with 1v supply.
int enablePin=9;
int a1=3;
int a2=11;

void setup()
{
pinMode(enablePin, OUTPUT);
pinMode(a1, OUTPUT);
pinMode(a2, OUTPUT);
}
void loop()
{
for(int i=0; i<=125; i++)
{
analogWrite(enablePin, i);
digitalWrite(a1, HIGH);
digitalWrite(a2, LOW);
}
delay(2000);
}
i have connected only one motor to the driver and the arduino board is powered by the computer. a 9v battery was connected to the l293d board.
the motor did not run… first there was a high speed sound as if the motor was running. i thought this was beacuse the supply was not enough. then the noise stopped in a while. but the motor did not run at all. the l293d board got heated up.
Please tell me wat my mistake could be and how to rectify it.

#2

What voltage is the motor?

Was the battery a PP3-sized one? If so you aren't getting anything like 2A from it.
If its a bigger one its probably OK, but is the motor 9V? I've not seen a 9V motor
very often, 3V, 6V, 12V, 18V and 24V are the standard voltages.

The L293D's practical upper current limit is about1A, nevermind what the datasheet
says, it will get HOT!

#3