I’ve determined that changing the cputype to pentium_slow (pentium/auto wouldn’t work) is what got it to start with svn core – though I haven’t gotten it past the loading screen as of yet. Memsize doesn’t seem to do much. I also tried erasing any trace of 3dfx but there was still no dice – though, a couple launches did incur a brief white screen just before closing, it’s not consistent and I don’t think it was related to attempts to remove 3dfx.