Not bad. You need to find the bytes to make it so that the ball won't jump up on top of blocks it should have already passed, and won't fall through blocks that it isn't quite all the way past. Other than that, gameplay is good. Would prefer it to not be fullscreen.
3048 my first time through.
About the fullscreen...
I thought it added to the old-schooliness (Atari was not integrated into a Windows environment). I guess you're right, though. I could do a lot better in a window. The fuillscreen was actually what pushed me up against the limit. I'll keep the full-screen version up on my site for anyone who wants it, even though it will be over the limit. I'll make the ball more solid-seeming, too.