If you enter Up, Up, Down, Down on the Crash Bandicoot Warped game file. The Cursor disappears.
This only happens for Crash Bandicoot Warped, it does not happen to Crash Bandicoot or Crash Bandicoot 2 Cortex Strikes Back.
The Spyro Demo Code in the PSX Crash Bandicoot Warped is Up, Up, Down, Down, Left, Right, Left, Right, Square,
Following Up, Up, Down, Down with Left, Right, Left, Right, the cursor is still gone. I hit Square... but that just loads up the License for the game. And the Cursor returns over Warped. Similarly it isn't Circle, X or Triangle...
L3, R3, Options, The Touchpad, and all the Shoulder Buttons don't make the cursor appear, so maybe it's related to them? The Mystery Begins...