I finally got around to grabbing the latest binaries this weekend and have
now tested things on a pair of uVAX-IIs.  I can now confirm fine operation
with the Dilog DQ256 SMD/MSCP board ... many thanks!

I ran the "Bonnie" benchmark on both systems and got these results:

uVAX-II (1+4Mb mem) with DQ256 controller and a Fuji M2361 Eagle drive.

    -------Sequential Output-------- ---Sequential Input-- --Random--
    -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
 MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
 50    55  3.6   239  6.8   133  3.8    60  1.8   276 75.0  15.8 14.0

uVAX-II (1+4+4Mb mem) with RQDX3 controller and an RD54 drive.

    -------Sequential Output-------- ---Sequential Input-- --Random--
    -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
 MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
 50    55 17.9   222 48.8   121 86.9    60  7.2   178 61.7   9.1  8.1

I quite enjoyed using the bootstrap TK50 stuff on a KA650 to get the
DQ256/M2361 system going - of course the kernel said no cputype support
when I booted it though 8-)  So I had to use a KA630 for the final touches.