[HECnet] Drives for a VAX-11/730

[John Wilson]

From: Johnny Billquist <bqt at softjar.se>

While the Massbus adapter talked SMD for all these drives, the Massbus 
adapter for the RM02/03 is not the same as for the RM05. Unless I 
remember wrong, they are very different beasts. And they identify 
themself as the exact type of drive on the Massbus as well, and the 
capacities and geometries differs, which is important, as Massbus drives 
expose all these details to the computer.

The RM adapter is *mostly* the same across RM02/03/05/80, but yes I think in
each case there's at least one board that's different (later version to add
register bits for larger drives etc.).   It's the same basic design though.
The one in the RM05 is mounted differently (horiz instead of vert) so you
can fit two of them into the mini-cab between two drives.   The others all
had enough space under the drive itself for the RM adapter so they didn't
bother trying to conserve space.

John Wilson
D Bit