The Orgasmatron ISO also works with the gOS development kit boards (VIA PC2500E) if you use a single SATA drive (the original Everex gOS systems used a PATA drive).
The Orgasmatron installation instructions suggest not adding memory upgrades before the installation, although mine did work OK with extra memory. The installation will fail if you disable any of the unused/unnecessary features in the BIOS before the install (e.g. 3.5 diskette, parallel port).
These VIA boards were sold by clubit.com which went out of business earlier this year. These boards, part of the VIA PC-1 series, do not appear to be available anywhere else in the US. VIA replied to an email about the boards, saying that they had no plans to market them here, as they were designed for "emerging countries and Asia Pacific regions."
Too bad, because availability of these boards meant you could stock a motherboard + CPU + fan spare for your PBX system for only $60, or build an Everex clone out of (better) parts (I used an 80Plus power supply, for example). I would assume that these boards by themselves are not available from Everex directly.
I hope to see an Orgasmatron release configured for a second low-cost computer or motherboard + CPU combination, just in case the Everex gOS systems go away. The Everex systems recently disappearing from Newegg's site is not a good sign.