Any info on a Western Peripherals DC-230 disk controller?

Chris Zach cz at
Fri Mar 12 19:25:27 CST 2021

Hm. I have a Q bus controller for a Diablo 44 which is the 5mb 
removable, 5mb fixed using an RL01 type pack. It emulates 4 RK05's. Same 
edge connector but only one of them.


On 3/12/2021 6:44 PM, jim stephens via cctalk wrote:
> On 3/12/2021 3:02 PM, Josh Dersch via cctalk wrote:
>> Any ideas what this disc controller is?
>> Can't find much about this on the 'net, other than that it was a 
>> controller
>> for Diablo/Pertec style drives -- no idea if it's an RK11 clone or
>> something else entirely. Looks to be suitable for a PDP-11/20 given the
>> little notch missing from the side there, and the lack of a separate 
>> power
>> harness for the backplane.
>> - Josh
> I found one computerworld reference to a distributor stocking them, 
> MTI.  but no hit on the ones I think they are.
> I had a friend who worked at a place with this name in Irvine which did 
> tape and disk controller systems for more than just DEC.  He worked @ 
> Microdata on some projects I worked on, then went back (79 or 80) and 
> stayed there.  He had a stake in the company, but he took contracting 
> work like we had @ Microdata to help out.
> The ad I saw was 1981 computer world for MTI, with just the company name.
> thanks
> Jim

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