Start the cassette motor.
Turn the cassette motor on and wait for it to pick up speed if it was previously off.
No conditions.
If the motor turned on OK:
Carry true.If the user hit escape:
Carry false.Always:
A contains the previous motor state.
Other flags corrupt.
All other registers preserved.
If the motor is not already on then the routine waits for approximately two seconds to allow the tape to reach full speed.
The motor is always turned on by this routine. If the user hits the escape key then the time spent waiting for the motor to pick up speed is truncated.
The previous motor state may be passed to CAS RESTORE MOTOR.