On 1/1/2006 at 11:50 PM compoobah at valleyimplants.com wrote: 2.3.2 was 286, 2.3.4 was 386. Earlier (2.2 series) I'm not as sure of, my disks specify "SCO XENIX 386" on the 386 specific bits, and they just say "SCO XENIX" on the utility & games volumes (likely common). Minix 1.1+ can be had from www.minix3.org/previous-versions/index.html, and Coherent is available online if you poke around, too, but I think it might be the 386+ only V4.10. I checked the distro diskettes and most of them are market 2.3, so I guess they're 386. But much of the development toolkit and utilites are marked "286". Does that mean that SCO 386 implementations don't use the flat 32-bit memory model? Cheers, Chuck