YM copy of gyruss for the NEs has white dots all over the game. I've cleaned the cartridge connectors and still have no idea what's causing this.
Picture of the game running on my TV
http://www.auctiva.com/hostedimages/...rmat=0&lgdin=1
Picture of Chipset
http://www.auctiva.com/hostedimages/...rmat=0&lgdin=1