12 Mar
2021
12 Mar
'21
3:02 p.m.
Any ideas what this disc controller is?
https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-C…
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
12 Mar
12 Mar
3:44 p.m.
On 3/12/2021 3:02 PM, Josh Dersch via cctalk wrote:
Any ideas what this disc controller is?
https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-C…
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
5:25 p.m.
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.
C
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?
https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-C…
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 
13 Mar
13 Mar
9:11 a.m.
On Fri, 12 Mar 2021, Chris Zach via cctalk wrote:
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.
Kind of related, I've got a Diablo Series 30 disk drive (Model 31 H6)
that's free to a good home. Local pickup only though - it's a bit on the
chubby side to ship. :) I'm in Graham, WA.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
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Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
12:42 p.m.
On Sat, Mar 13, 2021 at 12:11 PM geneb via cctalk <cctalk at classiccmp.org> wrote:
Kind of related, I've got a Diablo Series 30 disk
drive (Model 31 H6)
that's free to a good home. Local pickup only though - it's a bit on the
chubby side to ship. :) I'm in Graham, WA.
I wish I was a lot closer. I lost a Diablo 31 in a basement flood in
the 80s and I haven't come across a replacement for it.
It was really an "RK03" including the connector adapters for BC11
cables, but those I sold off to someone who was going to use them.
-ethan
16 Mar
16 Mar
9:23 a.m.
I may have a little info - but the info is in storage, and it is just a
"Western Peripherals Instruction Reference Card", apparently referring
to the DC-230, PDP-11 and TC-130 (the latter being a tape controller,
for which I do have some doc.)
Once the weather warms up again - say, maybe this weekend, I'll trot off
to storage, bring it back and scan it.
Back in the 1970's the UW Madison CS Department's 11/20 had a 3rd party
disk controller of some sort - one pack removable, one fixed, but I
don't remember who made it (might have been Wangco).
JRJ
On 3/12/2021 5:02 PM, Josh Dersch via cctalk wrote:
Any ideas what this disc controller is?
https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-C…
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
22 Mar
22 Mar
2:51 p.m.
New subject: Reference Card Scan (Re: Any info on a Western Peripherals DC-230 disk controller?)
I scanned the reference card I had - appears to be a RK11 compatible
disk controller (but maybe/maybe not compatible at the drive bus level?)
https://drive.google.com/drive/folders/1HBHDnEnpwE9OzDQjHEEasqci8KOfsw4p?us…
(Al Kossow: Free free to grab, as always.)
JRJ
On 3/12/2021 5:02 PM, Josh Dersch via cctalk wrote:
Any ideas what this disc controller is?
https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-C…
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
1139
days inactive
1149
days old
6 comments
6 participants
participants (6)
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cube1＠charter.net -
cz＠alembic.crystel.com -
derschjo＠gmail.com -
ethan.dicks＠gmail.com -
geneb＠deltasoft.com -
jwsmail＠jwsss.com