From Devil May Cry - Wiki on Neoseeker

Force Edge

The Force Edge is the default blade used by Dante in Devil May Cry. It looks just like any regular blade, however the Force Edge's true powers were sealed away by The Dark Knight Sparda and can only by opened when the sword is combined with the Perfect Amulet which was in the possesion of Dante's brother Vergil. When both the Amulet and Force Edge are combined it transfroms into the legendary blade Sparda which was once held and named after The Dark Knight Sparda.

[edit] Moves

[edit] Devil May Cry

[edit] Dante

Action	Command	Description
Force Edge Combo 1	, ,	3-hit combo.
Force Edge Combo 2	, - ,	A 5-hit combo which can knock back out all nearby enemies before destroying enemies directly in front of you.
Force Edge Combo 3	, ——	A forward thrust attack at you enemy with enough speed and power to blast them backwards.
High Time	+ +	Swing your sword in an uppercut mtion to send the enemy into the air.
Round Trip	(hold and release)	Throw the Force Edge like a boomerang.
Stinger	+ +	Launch at your enemy from a distance at high speed and thrust your sword at them.
Air Raid	(mid-air, Devil Trigger)	Jump into the air where you can perform several sword and gun attacks
Vortex	(when in Airborne)	Spinning body attack from mid-air.