> 
> The TU45 is another TM03-based Massbus drive just like the TE16 and TU77,
> actually AFAIK the only way for software to tell the difference is by speed
> and the value in the MTDT register.  So it's a generic Massbus drive,
> 18-bit-capable with the right bit fiddler board, you can use it on Unibus
> with an RH11 but it works with the RHxx(x) on any other machine too.  The
> TU45 drive mechanism has a reputation for being junk, so it figures that
> I'm stuck with two of them!
> 
Is a TU45 with 18-bit-capable bit fiddler expected to work on 
16-bit machines also? I once tried my TU45 on a VAX with no luck.

-- Ragge