16 Nov
2019
16 Nov
'19
5:54 p.m.
Hi all,
I recently picked up a ?tabletop? RX01 drive for cheaps. So now I?m in the market for:
- RK11 controller
- cables
- rack ears, rails (how was this done?)
- formatted media
If anybody here might have any of this and like to work out a deal, feel free to let me
know off-list!
thanks much,
?FritzM.
17 Nov
17 Nov
4:17 a.m.
I think you mean RX11. I'll see if I have any I can spare. Isn't the
BC05L-15 folded up in the case?
Or did they put a short one to the back of the box? I can't remember now.
There are 3 or so screws on on each side that hold the bottom of the box
on. The same screw
and holes are used for the slides. I'll look for slides also. Which are
you on located?I know
someone who was looking for a box last year.
Are they the old Calcomp cast aluminum, or the newer DEC 70 class drives?
The DEC ones
can sometimes be converted to RX02s. I think the older (RX01 only) were the
M7726 and M7727.
The newer RX02 boards, M7744 and M7745, can be used for either.
DISCLAIMER!! I'm taking
the board numbers off the top of my head. They could be wrong.
Paul
On Sat, Nov 16, 2019 at 4:54 PM Fritz Mueller via cctalk <
cctalk at classiccmp.org> wrote:
Hi all,
I recently picked up a ?tabletop? RX01 drive for cheaps. So now I?m in
the market for:
- RK11 controller
- cables
- rack ears, rails (how was this done?)
- formatted media
If anybody here might have any of this and like to work out a deal, feel
free to let me know off-list!
thanks much,
?FritzM.
7:19 a.m.
On Sun, Nov 17, 2019 at 9:18 AM Paul Anderson via cctalk
<cctalk at classiccmp.org> wrote:
The DEC ones
can sometimes be converted to RX02s. I think the older (RX01 only) were the
M7726 and M7727.
The newer RX02 boards, M7744 and M7745, can be used for either.
DISCLAIMER!! I'm taking
the board numbers off the top of my head. They could be wrong.
I think the boards are very different and thus easily distinguished :
The RX02 boards (which can be set to RX01 mode with a DIP switch on
the controller board) :
Are interconnected by a 20 way cable ending in Berg connectors
The controller board has a pair of 2901s (40 pin chips) and a 2 position
DIP switch on it.
The RX01 boards :
Are interconnected by a 16 way cable with DIL headers
The controller board has no 40 pin ICs, no DIP switch. But it has
a 36 way DEC-style edge connector for a KM11 board
-tony
2:17 p.m.
Hi Paul,
I think you mean RX11.
Ah, yes ? I typo?d that, thanks!
Isn't the BC05L-15 folded up in the case? Or did
they put a short one to the back of the box? I can't remember now.
I?ll have a look to remind myself when I get downstairs later today. IIRC, everything is
brought out to D-shell connectors on the back of the box?
Which are you on located? I know someone who was
looking for a box last year.
I?m in Oakland, CA. I?d gladly pass the box on to some other collector if I can find
rails.
Are they the old Calcomp cast aluminum, or the newer
DEC 70 class drives? The DEC ones
can sometimes be converted to RX02s. I think the older (RX01 only) were the M7726 and
M7727.
Will check and post back.
Thanks!
?FritzM.
2:25 p.m.
On Sun, Nov 17, 2019 at 2:17 PM Fritz Mueller via cctalk
<cctalk at classiccmp.org> wrote:
Yes. The table-top enclosure has IIRC a small board with a 40-pin
Berg and DB25 on it. Systems that came with a DB25 disk drive cable
included the early DECmates (VT78 and DECmate I) and the MINC-11.
Same pinout everywhere. The disk pedestal for the DECmate I
definitely has a passive board inside for the DB25-Berg-40 transition.
For the DECmate I, there's a DC37-DB25 cable from the CPU. For the
MINC-11, there is IIRC a 40-pin-to-DB25 cable that goes into the RXV21
(same pinouts as the RX11).
I don't remember any Unibus systems using the desktop RX01 enclosure
but it would work with the right cabling. For the short term, you can
get a 5-10' 40-pin cable and just run it from the RX11 to the RX01
controller board, but you wouldn't be able to close the drive box up.
If you are just looking to remove the drive from the box and
rack-mount it, they used the standard "Parkerized" grey-finish steel
slide rails that were common in 1970s DEC gear.
The box is kind of fun, and was standard for word processors and the
MINC-11 but I can understand wanting a rackable system.
-ethan
Isn't the
BC05L-15 folded up in the case? Or did they put a short one to the back of the box? I
can't remember now.
I?ll have a look to remind myself when I get downstairs later today. IIRC, everything is
brought out to D-shell connectors on the back of the box?
2:45 p.m.
Hi Ethan,
On Nov 17, 2019, at 11:25 AM, Ethan Dicks
<ethan.dicks at gmail.com> wrote:
The box is kind of fun, and was standard for word processors and the
MINC-11 but I can understand wanting a rackable system.
Thanks for the info!
I?m all for keeping things intact when possible, so I?d also be happy to do a trade for a
rackable RX drive if anybody is interested. Otherwise, would definitely want to pass the
box on to any interested collector.
--FritzM.
9:30 p.m.
On Sun, Nov 17, 2019 at 2:45 PM Fritz Mueller via cctalk
<cctalk at classiccmp.org> wrote:
Hi Ethan,
Sure thing.
Here's a photo of the VT78 on its table over the tabletop RX02 box.
You can see the bent metal "rails" in the bottom - the drive box just
slides back on those. Quite minimal.
http://computermuseum.informatik.uni-stuttgart.de/pics/vt78/vt78.jpg
On Nov 17, 2019, at 11:25 AM, Ethan Dicks
<ethan.dicks at gmail.com> wrote:
The box is kind of fun, and was standard for word processors and the
MINC-11 but I can understand wanting a rackable system.
Thanks for the info! 
I?m all for keeping things intact when possible, so
I?d also be happy to do a trade for a rackable RX drive if anybody is interested.
Otherwise, would definitely want to pass the box on to any interested collector.
There are many options, as have been discussed. The drive mechs and
boards and PSU are quite standard and were available in 2-3
configurations (rackable, DECmate I pedestal, tabletop box,
essentially). All the internal drives used Berg-40-to-Berg-40 cables.
The external ones used the DB25 arrangement.
-ethan
18 Nov
18 Nov
5:59 p.m.
On 18/11/2019 02:30, Ethan Dicks via cctalk wrote:
Here's a photo of the VT78 on its table over the
tabletop RX02 box.
You can see the bent metal "rails" in the bottom - the drive box just
slides back on those. Quite minimal.
http://computermuseum.informatik.uni-stuttgart.de/pics/vt78/vt78.jpg
That's exactly what mine looked like when I picked it up a decade and a
half ago. Works too. Well worked then, not sure about now.
I left the table behind. I promise to kick myself ...
Nice use of the word "minimal" ... have you lifted a dual RX02 lately :-)
Antonio
--
Antonio Carlini
antonio at acarlini.com
17 Nov
17 Nov
4:02 p.m.
On 11/17/19 2:17 PM, Fritz Mueller via cctalk wrote:
Hi Paul,
RX02 conversion required two things, both boards from RX02. The drives
are not an issue as I have done it. Memory is fuzzy if I reused the old
power supply. Pulled it and its the old.
Then you must have a RXV21(qbus) RX21(u-bus) as well...
I think you mean RX11.
Ah, yes ? I typo?d that, thanks!
Isn't the BC05L-15 folded up in the case? Or
did they put a short one to the back of the box? I can't remember now.
I?ll have a look to remind myself when I get downstairs later today. IIRC, everything is
brought out to D-shell connectors on the back of the box?
Which are you on located? I know someone who was
looking for a box last year.
I?m in Oakland, CA. I?d gladly pass the box on to some other collector if I can find
rails.
> Are they the old Calcomp cast aluminum, or the newer DEC 70 class drives? The DEC
ones
> can sometimes be converted to RX02s. I think the older (RX01 only) were the M7726 and
M7727. Will check and post back.
Thanks!
?FritzM.
6:59 a.m.
Hi Fritz,
I'm interested in the RX01 Drive and equipment.
Where is the stuff located?
Many Greetings
Ulrich
2:20 p.m.
Hi Ulrich,
On Nov 17, 2019, at 3:59 AM, Ulrich Tagge via cctalk
<cctalk at classiccmp.org> wrote:
I'm interested in the RX01 Drive and equipment.
Where is the stuff located?
Unfortunately, the list in my email was stuff I wish to buy, not sell :-)
Sorry for being unclear!
--FritzM.
1741
days inactive
1743
days old
10 comments
7 participants
participants (7)
-
a.carlini＠ntlworld.com -
allisonportable＠gmail.com -
ard.p850ug1＠gmail.com -
ethan.dicks＠gmail.com -
fritzm＠fritzm.org -
u.tagge＠gmx.de -
useddec＠gmail.com