doxDev

I was wrong - there's no "type 3" sprite. It's just a background layer made of 16 different 32x32 pixel tiles. Tilemap (128x8 cells (4096x256 pixels), animated (flashing stars and texts) ) is hardcoded inside one of eproms used as a lookup. Here's a screenshot from game - shows only the most boring part of bg - stars: Game is not playable (yet) so i can't see other levels / backgrounds. These images are ripped directly from the tilemap (wrong colros, as usually ;) : There's also an interesting hw feature - background can be stretched horizontally (in fact - vertically (div scnaline clock by 2), because screen is rotated by 90 deg). It's probably used (only?) to display the planet surface:

The good news - i have got scans of vega schematics (big thanks to Kold666) The bad news - hardware is quite old (early 80s .. possibly 1982 or 1983) (read: unique and complicated) and schems are buggy as hell. The biggest problem so far - no reference images/screenshots/flyer pics. Nothing. I have no f***ing idea about the real game. So any info will be greatly appreciated. Schems are as mysterious as the pcb pics i got - no info about the major ICs. But looking at pinout i have identifed all of them as: - i8035 (mcu) - AY 3-8910 (sound) - PPI 8255 (i/o) - INS 8154 (i/o + ram) - DP 8350 (crt controller) AY is used only for generating sfx. Afaik there's no music. Sound chip is connected in unusual way - AY data lines are tied to address bus and AY address/data write selection is connected to mcu R/W line. So, writing any data to address NNN within range mapped to AY - results in setting AY address register to value NNN. Reading from address MMM store MMM ...