how does the z80 LDIR instruction work?

[rain_storm]

Awesome demo thats a whole lotta pixels pushing. I see why you like it. Couldnt imagine whats going on there behind the scenes to keep that frame rate up though.

[Jim]

No double buffering on that one nino - you can see the emulators emulating the tearing, especially during the yellow rotozoom!  Nice demo though, great music!
Jim