Strange RK03 / RK05 clone with Plessey-controller

[Tony Duell]

> Moreover, I found a disk pack which goes with the drive: DEC 2200 BPI-12
> Is this a RK03 or RK05 pack ?

Yes. :-)

The RK03 and RK05 use the same packs. The interface between the drive and 
controller is also very similar. The main difference is that the RK03 is 
actually a Diablo Model 30 (high density version), the RK05 is a a DEC 
design.

Incidentally, did the RK04 ever exist (by rights it'd be a low density RK05)

-tony