6 Sep
2010
6 Sep
'10
1:45 p.m.
Anyone have a copy of or know the location of the DEC RRD50 maintenance
manual, specification, etc.? I'm interested in the interface for historical
curiosity only.
I'm pretty sure the DEC drive was an OEM Philips CM100.
Tom
6 Sep
6 Sep
6:31 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On Mon, 6 Sep 2010, Tom Gardner wrote:
Anyone have a copy of or know the location of the DEC
RRD50 maintenance
manual, specification, etc.? I'm interested in the interface for historical
curiosity only.
Is that the one that used a bizarre proprietary plastic carrier for the
disk?
--
7 Sep
7 Sep
12:24 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Steven Hirsch asked about the DEC RRD50 (Philips/LMSI CM100):
Is that the one that used a bizarre proprietary
plastic carrier for
the disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? I've never seen it, so I
don't know.
Eric
4:11 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On Tue, 7 Sep 2010, Eric Smith wrote:
Steven Hirsch asked about the DEC RRD50 (Philips/LMSI
CM100):
The RRD40 used a two-piece thin caddy with a "lobster claw" insert
which stays in the drive with the CD. I can take a picture if you like,
but this is the drive:
http://sturgeon.css.psu.edu/~mloewen/Oldtech/VAX/Vax-26L.jpg
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
Is that the one that used a bizarre proprietary
plastic carrier for the
disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? I've never seen it, so I don't
know. 
9:23 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On 9/7/10 7:11 AM, Mike Loewen wrote:
AH! Yes, I have about six of those. And a few caddies, fortunately. :)
-Dave
--
Dave McGuire
Port Charlotte, FL
Maybe the
RRD40 used a proprietary caddy? I've never seen it, so I
don't know.
The RRD40 used a two-piece thin caddy with a "lobster claw" insert which
stays in the drive with the CD. I can take a picture if you like, but
this is the drive:
http://sturgeon.css.psu.edu/~mloewen/Oldtech/VAX/Vax-26L.jpg 
9:41 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Mike Loewen [mloewen at cpumagic.scol.pa.us] wrote:
The RRD40 used a two-piece thin caddy with a "lobster claw" insert
which stays in the drive with the CD. I can take a picture if you
like, but this is the drive:
http://sturgeon.css.psu.edu/~mloewen/Oldtech/VAX/Vax-26L.jpg
I don't know why, but we called the caddy "antlers".
Somewhere or other I have a VS3100 (or MV3100, I forget exactly)
with 3 or 4 RRD40 CDROMs fitted internally. Those are a drive
plus a SCSI interface board. So I'm not sure that the RRD40 is
native SCSI: I suspect that it's whatever the RRD50 was (or close to it)
with an adapter board fitted. (My RRD40 is buried right now so
I'm in no position to open it up and look).
Antonio
2:08 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
arcarlini at iee.org wrote:
Somewhere or other I have a VS3100 (or MV3100, I
forget exactly)
with 3 or 4 RRD40 CDROMs fitted internally. Those are a drive
plus a SCSI interface board. So I'm not sure that the RRD40 is
native SCSI: I suspect that it's whatever the RRD50 was (or close to it)
with an adapter board fitted. (My RRD40 is buried right now so
I'm in no position to open it up and look).
I can verify that the RRD40 uses a non-SCSI interface to a SCSI
bridgeboard. The standard-caddy-using standard-SCSI-connected CD-ROM is
the RRD42.
Peace... Sridhar
6:09 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On Tue, 7 Sep 2010, Mike Loewen wrote:
On Tue, 7 Sep 2010, Eric Smith wrote:
Yup, that's the one I'm thinking of.
--
Steven Hirsch asked about the DEC RRD50
(Philips/LMSI CM100):
The RRD40 used a two-piece thin caddy with a "lobster claw" insert which
stays in the drive with the CD. I can take a picture if you like, but this
is the drive:
http://sturgeon.css.psu.edu/~mloewen/Oldtech/VAX/Vax-26L.jpg Is that the one that used a bizarre proprietary
plastic carrier for the
disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? I've never seen it, so I don't
know. 
8:59 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On 7 September 2010 08:24, Eric Smith <eric at brouhaha.com> wrote:
?Steven Hirsch asked about the DEC RRD50 (Philips/LMSI
CM100):
*googles*. Ah. I've never seen an RRD50 in that case! I must've been
thinking of the RRD40 since the next one up was the dual-speed RRD42
which also used a caddy but was less proprietary as the drive itself
(Toshiba?) was also used in the Apple 300i, NeXT and even the Amiga
CD32. The RRD43 (also used by SUN) spat the tray AND mechanism at you
and then we got speedy with the tray loading RRD44 and RRD45.
--
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest home? computer collection?
www.binarydinosaurs.co.uk
Is that the one that used a bizarre proprietary
plastic carrier for the
disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? ?I've never seen it, so I don't
know.
9:22 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On 9/7/10 3:24 AM, Eric Smith wrote:
Steven Hirsch asked about the DEC RRD50 (Philips/LMSI
CM100):
I'm pretty sure I have one of those brand new, still in the box.
Is that the one that used a bizarre proprietary
plastic carrier for
the disk?
No, it's a top-loader with no caddy. Maybe the RRD40 used a proprietary caddy? I've
never seen it, so I don't
know.
Yes, I think that's correct. I have several of those drives here
(anybody need any?) but they're out of sight at the moment. Might be
RRD42 instead of RRD40? They're definitely the ones with the narrow
slot that requires the strange "claw" caddy.
-Dave
--
Dave McGuire
Port Charlotte, FL
11:11 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Steven Hirsch asked about the DEC RRD50 (Philips/LMSI CM100):
In which case, alas, what I have is not a CM110. My drive is a front
loader that does take a caddy (same as a DEC RRD40), but is half-height
5.25" drive sized and has a SCSI interface..No, amazingly I've found it,
it's a CM212, made by Laser Magnetic Storage International (who IIRC were
connected with Philips). It's got the Philips radial tracking mechanism,
and many of the TTL ICs that I can see have the Philips logo.
Anyone got a CM212 service manual?
Is that the one that used a bizarre proprietary
plastic carrier for
the disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? I've never seen it, so I
don't know.
It does. Well, the caddt was also used with other Philips/LMSI drives.
-tony
2 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Eric Smith wrote:
Steven Hirsch asked about the DEC RRD50 (Philips/LMSI
CM100):
Yes, the RRD40 used a proprietary caddy.
Peace... Sridhar
Is that the one that used a bizarre proprietary
plastic carrier for
the disk?
No, it's a top-loader with no caddy.
Maybe the RRD40 used a proprietary caddy? I've never seen it, so I don't
know.
3:24 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On 7 September 2010 02:31, Steven Hirsch <snhirsch at gmail.com> wrote:
On Mon, 6 Sep 2010, Tom Gardner wrote:
Yep. I'm not in the workshop so can't easily check, but I know we have
one on the 'someone might need one one day' floor, and I'm fairly sure
I've got the manual at home. It's SCSI-1 AFAIK.
--
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest home? computer collection?
www.binarydinosaurs.co.uk
Anyone have a copy of or know the location of the
DEC RRD50 maintenance
manual, specification, etc.? ?I'm interested in the interface for
historical
curiosity only.
Is that the one that used a bizarre proprietary plastic carrier for the
disk? 
8:28 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
What's bizarre about it? It was fairly standard - I have NEC drives that use that
carrier, too.
The interface is fairly vanilla SCSI. The drive itself is different than most modern
drives in that it was 512 byte sectors instead of 2048. -- Ian
________________________________________
From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of
Steven Hirsch [snhirsch at gmail.com]
Sent: Monday, September 06, 2010 6:31 PM
To: General Discussion: On-Topic Posts Only
Subject: Re: Wanted: DEC RRD50 CD-ROM Manuals
On Mon, 6 Sep 2010, Tom Gardner wrote:
Anyone have a copy of or know the location of the DEC
RRD50 maintenance
manual, specification, etc.? I'm interested in the interface for historical
curiosity only.
Is that the one that used a bizarre proprietary plastic carrier for the
disk?
--
9:28 a.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Ian King wrote:
What's bizarre about it? It was fairly standard -
I have NEC drives
that use that carrier, too.
NEC drives use a standard caddy. Early DEC drives (but not the RRD50)
used a non-standard caddy; they didn't use the standard one until later.
Eric
12:06 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
Oops, I misread the original post - not enough caffeine in the bloodstream yet....
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Ian King
Sent: Tuesday, September 07, 2010 8:28 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Wanted: DEC RRD50 CD-ROM Manuals
What's bizarre about it? It was fairly standard - I have NEC drives
that use that carrier, too.
The interface is fairly vanilla SCSI. The drive itself is different
than most modern drives in that it was 512 byte sectors instead of
2048. -- Ian
________________________________________
From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On
Behalf Of Steven Hirsch [snhirsch at gmail.com]
Sent: Monday, September 06, 2010 6:31 PM
To: General Discussion: On-Topic Posts Only
Subject: Re: Wanted: DEC RRD50 CD-ROM Manuals
On Mon, 6 Sep 2010, Tom Gardner wrote:
Anyone have a copy of or know the location of the
DEC RRD50
maintenance
manual, specification, etc.? I'm interested
in the interface for
historical
curiosity only.
Is that the one that used a bizarre proprietary plastic carrier for the
disk?
--
6:10 p.m.
New subject: Wanted: DEC RRD50 CD-ROM Manuals
On Tue, 7 Sep 2010, Ian King wrote:
What's bizarre about it? It was fairly standard -
I have NEC drives
that use that carrier, too.
All the NEC drives I've seen have used the more conventional
sliding-shutter CD carrier. Never ran into the style you mention. Learn
something every day!
Steve
--
5219
days inactive
5221
days old
16 comments
10 participants
participants (10)
-
arcarlini＠iee.org -
ard＠p850ug1.demon.co.uk -
binarydinosaurs＠gmail.com -
eric＠brouhaha.com -
IanK＠vulcan.com -
mcguire＠neurotica.com -
mloewen＠cpumagic.scol.pa.us -
ploopster＠gmail.com -
snhirsch＠gmail.com -
thomas.gardner＠sbcglobal.net