I'm sorry to come up here with the Atari enemy but couldn't resist, really.
Check out this:
Doctor by TrilobitThis demo is a f*n' madhouse, man, it destroyed my sanity for days.
What I'm trying to say is... This was made using 128B of RAM plus 256B on an external cartridge. And two sound channels...
That kind of stuff in our today's Terabyte World of PC Regime shows really that this all sorts of effort and resources is nothing but a tremendous waste. Todays computers are not about computing whatsoever anymore. It's all about selling more RAM as the price decreases.
And one more thing to remember: but for all Ataris (e.g. 520ST) Amiga wouldn't have become what it did.
Respect.