RX01 felt pad (Tim)

[Tony Duell]

> RX01 drives and RX02 drives are the same.  Only the logic differs.

I was under the impression there was a minor electical difference between 
the drives -- something about a resistor on the head connector. But I 
might be thinking of some other unit.

Most RX01 and RX02 drives are mechanically the same. But I've seen an 
early RX01 with a different drive mechanism. Most of the drives have a 
pressed metal housing with a little die-cast chassis to hold the spindle, 
motor, and head positioned. That's mounted into the housing, the disk 
holder bits are mounted seperatly to the hosing.

The other drive (which had a 'CDC flavour') had a diecast 
chassis/housing. Everything was mounted on that. IIRC, there was an air 
duct cast as past of the housing.

I think the 2 types of drives are totally compatible externally (i.e. 
there are no PSU or R/W board changes), but most of the internal bits are 
different.

-tony