Yup, Missile Command, but the game code is located in bottom of the bitmap ('frame buffer' if you like), so when the line drawing code writes to that area it wi

Yup, Missile Command, but the game code is located in bottom of the bitmap ('frame buffer' if you like), so when the line drawing code writes to that area it will modify it. Shenanigans! The bitmap would end before $3fff though, since it's only 8000 pixels.