Wangtek DC-300 drive and controller

[Chuck Guzis]

I've got a Wangtek DC-300 tape drive (model 54590) and a controller with a
5.25" footprint.  The controller has a 50-conductor edge connector keyed
the same way as the drive connector, so I'm assuming that the drive is
connected there.  The controller also has a 50 pin male header.  I believe
the controller is also a Wangtek model WT05ZK.  It's got an 8085A-2 on it,
as well as the usual support chips (8257 DMAC  AM9128 PIC).  Chip dates are
1984.

What's the interface to the controller?  SASI?  Anyone know what the
command set might be?

Cheers,
Chuck