At this page you claim that DOT Product Bump Mapping is only supported by Permedia3...

http://www.hardwarecentral.com/features/reports/bump1/index6.html

Thats not true... Videologic/NECs PowerVR250 chip also supports that type of bumpmapping. Check :

www.powervr.co.uk
www.powervr.com

For whitepapers and mpgs...

K- Beyond3D
www.Beyond3D.com