No, it's a "glitch" that can be seen in many games, whereby the display timing in the VDC doesn't match that of the VCE, and so the game has 2 sets of "HSyncs" and 2 sets of VSyncs. On the real system, the upper picture has half the scanlines, and the lower picture has the remaining half, both squashed.
IIRC, there's a password in World Court Tennis that does the same thing.