I just looked at the pics and comfiguration. Do you have the RK11-C to
control the Diablo 30? I have a drive here but not sure about the
controller. I don't thinh the RK11-d will work on that drive, and I
didn't see eother in the pic.
There are 2 main differncees between the RK11-C and RK11-D.
The first is that the -C can also handle low-density drives like the
RK02. I don't think this applies here
The second is the drive select lines. The RK11-C has 4 lines per drive
cabvle connector, 1-of-n encoded (oee signals is asserted at a time to
select oen drive). Thus each cable can have 4 drives conencted to it,
there are 2 cable conenctros for a total of 8 drives
The RK11-D uses binary encoding on 3 lines (so 8 drives on one cable).
The RK05 drive cna handle either, there's singal on the itnerface
conencotr which is groudned by an RK11-D to eneable a decoder in the
drive. Mny other drives, like the Diablo 30, could only handle 1-of-n
select lines.
Over here,. Plessey sold an (exact?) clone of the RK11-D which was sued
with Diablo and similar dreives. The trick was that the drive cable had
a decoder IC on the PCB at the controller end. I don't think I have any
more infroamtion on that, alas.
-tony