Talked to one of the Rio engineers and got a few corrections and additions to the technical data.
– The CPU is the 5003, not the 5002. The 5003 has a better cache architecture and some other improvements (and an ethernet MAC onboard).
– USB onboard the 5003 is not used, as this is USB1, 12MBit. There’s a Cypress controller doing the USB2 480Mbit.
– The RAM usage is actually more buffer than workspace/code/fonts/etc. We don’t use the Hitachi’s APM features, we just turn it off – the APM stuff isn’t low power enough. I’m not aware of any HDD jukebox which relies on the HDD sleep modes, as they’re not (yet) zero power on any HDD. The RAM is low power Micron mobile SDRAM.
– The onboard database isn’t much like the empeg-car’s one, nor like the Rio Central database that came after it. It’s a DB specially optimised for the Karma’s needs.
Continued...