ISO: I/O panel for Wangco ST-2222 (or similar) drive

Paul Anderson useddec at
Sat Nov 23 02:36:30 CST 2019

I thought the Diablo drives worked on the RK11-C, but not the RK11-D. Will
they work on both?

On Fri, Nov 22, 2019 at 11:23 PM Josh Dersch via cctalk <
cctalk at> wrote:

> Hi all --
> Picked up a mostly complete Wangco ST-2222 drive recently.  This is a
> removable pack drive with one fixed platter, nominally Diablo 30 / RK05
> compatible in terms of interface, but uses IBM 5540-style packs.  It's in
> good condition and I'd like to restore it and see if I can interface it to
> an RK11.
> The part I'm missing is the I/O panel -- on this particular model there was
> a breakout board that bolted to the rear of the rack the drive was mounted
> in (rather than being mounted to the back of the drive), and it contained
> some buffers, level shifters, drive select logic, and the actual interface
> connectors.  There were two variants of this -- 301062 was the Diablo 30/31
> style (with the big Winchester blocks) and 301291 had a more generic
> interface with what looks like centronics-style connectors.  (You can see
> assembly drawings of them in the schematic here:
> ,
> pages 55 and 69).
> I figure it's a long shot, but does anyone have one of these two boards
> going spare, or have a similar drive (others in the ST family share the
> same panel, it seems) that is in unrestorable/parts-donor condition they
> could steal one from?
> Thanks,
> Josh

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