So here's the 32X DDK that that rotating Sonic model came out of. Chilly Willy sent this file to me after telling me about the model source code, so many thanks to him. 32X-DDK.7z 164MB MD5 sum: 1cf04ac57eab765e78bcba26967aa0df As you can see, according to the file size, it's been unsuitable for normal download until recently and so has been locked inside various torrents. I'm here to be the first to provide a reliable HTTP mirror of this thing. Here's a directory listing. Of note: ARCHIVES\NOV01_94.DTS\32X contains the original 32X SDK from Hacking CulT with a few extra files. Several folders contain evolutions of the entire development toolchain, including the gcc they used. ARCHIVES\MAR01_95.DTS\SATURN, ARCHIVES\NOV01_94.DTS\SATURN, and SEGADTS\SATURN contain a miniature Saturn SDK, including stuff that the 32X and Saturn DON'T share (like CD drives — Sega CD is accessed through a separate address space) sega\ contains the Genesis/Sega CD/Sega 32X manuals as we have seen them — HTML files linking to GIFs. SEGADTS\32X/DEMO\RUNLNGTH contains the rotating Sonic model. SEGADTS\MANUALS.DTS\HITACHI contains official SH-2 documentation from Hitachi. SEGADTS\MANUALS\SGL and SGL_1.0 contain the "Sega Graphics Library," which is supposedly what Saturn developers used for graphics. Enjoy, and once again, much thanks to Chilly Willy for this.