24 Mar
2012
24 Mar
'12
2:38 a.m.
I recently picked up an RX50 for my MicroVAX II. It does not have the cable
with it to connect to the BA123 distribution board, however it seems to fit
a traditional PC floppy disk cable, is that all it needs?
Thanks
Rob
24 Mar
24 Mar
7:47 a.m.
On Sat, 24 Mar 2012, Rob Jarratt wrote:
I recently picked up an RX50 for my MicroVAX II. It does not have the cable
with it to connect to the BA123 distribution board, however it seems to fit
a traditional PC floppy disk cable, is that all it needs?
Traditional *PC* floppy cables have the whacky drive select/motor on twist in
them. You need a cable without a twist.
--
roger ivie
rivie at ridgenet.net
7:58 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Roger Ivie
Sent: 24 March 2012 14:47
To: General Discussion: On-Topic Posts Only
Subject: Re: Cable for RX50
On Sat, 24 Mar 2012, Rob Jarratt wrote:
I have a cable with two connectors, one is connected to the other end
straight, and one with a twist. Presumably if I connect to the non-twist
connector that will be OK?
I notice though that the connector is not keyed, any idea which way to
connect it at the RX50 end?
Thanks
Rob
I recently picked up an RX50 for my MicroVAX II. It does not have the
cable with it to connect to the BA123 distribution board, however it
seems to fit a traditional PC floppy disk cable, is that all it needs?
Traditional *PC* floppy cables have the whacky drive select/motor on twist
in them. You need a cable without a twist.
--
roger ivie
rivie at ridgenet.net 
10:37 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of arcarlini at iee.org
Sent: 24 March 2012 15:54
To: 'General Discussion: On-Topic and Off-Topic Posts'; 'General
Discussion:
On-Topic Posts Only'
Subject: RE: Cable for RX50
Many thanks, downloading now.
Regards
Rob
I notice though that the connector is not keyed,
any idea which way to
connect it at the RX50 end?
Not a direct answer (as I cannot get to my rainbow easily right now) but
EK-PC100-TM-001 (the Rainbow 100 Technical Manual) does have cable
pinouts starting at p3-17.
Antonio
12:57 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Rob Jarratt
Sent: 24 March 2012 17:38
To: 'General Discussion: On-Topic and Off-Topic Posts'; 'General
Discussion:
On-Topic Posts Only'
Subject: RE: Cable for RX50
So, I discovered that the doors were not blocked, as usual, I was just being
too cautious with the amount of pressure I was putting on them. They open
fine and I got the disks out. One was labelled as a system disk for a
DECmate III.
I have not been able to work out the how the cable should be connected from
printsets and other technical docs I have, so I am reluctant to connect it
up in case I get the wrong orientation of the connector (or the wrong cable,
if it is not straight through). From the 630QB technical manual, I believe
the cable I need is a 17-00867-01. If someone has one of these and can tell
me if it is straight through and how the connectors are keyed that would be
great.
Regards
Rob
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of arcarlini at iee.org
Sent: 24 March 2012 15:54
To: 'General Discussion: On-Topic and Off-Topic Posts'; 'General
Discussion:
On-Topic Posts Only'
Subject: RE: Cable for RX50
Many thanks, downloading now.
Regards
Rob I notice though that the connector is not keyed,
any idea which way
to connect it at the RX50 end?
Not a direct answer (as I cannot get to my rainbow easily right now)
but
EK-PC100-TM-001 (the Rainbow 100 Technical Manual) does have cable
pinouts starting at p3-17.
Antonio 
1:06 p.m.
On 03/24/2012 03:57 PM, Rob Jarratt wrote:
I have not been able to work out the how the cable
should be connected from
printsets and other technical docs I have, so I am reluctant to connect it
up in case I get the wrong orientation of the connector (or the wrong cable,
if it is not straight through). From the 630QB technical manual, I believe
the cable I need is a 17-00867-01. If someone has one of these and can tell
me if it is straight through and how the connectors are keyed that would be
great.
I have one here, I will dig into it in a moment.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
1:36 p.m.
On 03/24/2012 03:57 PM, Rob Jarratt wrote:
I have not been able to work out the how the cable
should be connected from
printsets and other technical docs I have, so I am reluctant to connect it
up in case I get the wrong orientation of the connector (or the wrong cable,
if it is not straight through). From the 630QB technical manual, I believe
the cable I need is a 17-00867-01. If someone has one of these and can tell
me if it is straight through and how the connectors are keyed that would be
great.
The cable is a no-brainer; just a straight ribbon cable with IDC
connectors on each end.
On the RX50 drive itself pin 1 of the ribbon cable is the one that's
closest to the power connector.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
2:27 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Dave McGuire
Sent: 24 March 2012 20:37
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Cable for RX50
On 03/24/2012 03:57 PM, Rob Jarratt wrote:
connectors
I have not been able to work out the how the
cable should be connected
from printsets and other technical docs I have, so I am reluctant to
connect it up in case I get the wrong orientation of the connector (or
the wrong cable, if it is not straight through). From the 630QB
technical manual, I believe the cable I need is a 17-00867-01. If
someone has one of these and can tell me if it is straight through and
how the connectors are keyed that would be great.
The cable is a no-brainer; just a straight ribbon cable with IDC on each end.
On the RX50 drive itself pin 1 of the ribbon cable is the one that's
closest
to the power connector.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
That is great, I tried it and it worked.
However, VMS is only recognising one of the two drives in the RX50. Apart
from any possible faults in the drive, cable,
distribution board etc, is
there any config needed on the drive itself, bearing in
mind that this is in
a BA123 with an M9058 distribution board?
I have two hard disks in the machine, which are being recognised as DUA0 and
DUA1, I have DUA2 as one of the RX50s (the one on the right when it oriented
vertically, it would be the bottom one if it was horizontal), but no DUA3.
There is some confusing wording in the RQDX3 docs which suggests the drives
are numbered automatically by the M9058, but then it says to be careful with
the config in the drive to avoid conflicts.
Regards
Rob
25 Mar
25 Mar
3:01 p.m.
However, VMS is only recognising one of the two drives in the RX50. Apart
from any possible faults in the drive, cable, distribution board etc, is
there
any config needed on the drive itself, bearing in mind
that this is in a
BA123
with an M9058 distribution board?
I have two hard disks in the machine, which are being recognised as DUA0
and DUA1, I have DUA2 as one of the RX50s (the one on the right when it
oriented vertically, it would be the bottom one if it was horizontal), but
no
DUA3.
There is some confusing wording in the RQDX3 docs which suggests the
drives are numbered automatically by the M9058, but then it says to be
careful with the config in the drive to avoid conflicts.
I resolved the problem of VMS only seeing one RX50. I had plugged one of the
hard disks into the connector on the upper half of the distribution board.
This seemed to conflict with the RX50, connecting the two hard disk to the
connectors furthest from the RX50 connector resolved it.
Regards
Rob
24 Mar
24 Mar
1:56 p.m.
I have a cable with two connectors, one is connected
to the other end
straight, and one with a twist. Presumably if I connect to the non-twist
connector that will be OK?
Should be.
I notice though that the connector is not keyed, any idea which way to
connect it at the RX50 end?
One row of pins on the RX50 are all grounds, so they're connected toghter,
and to the middle 2 pins on the power conenctor. Similarly one row of
pins on the distribution board are all grounds (connected togther and to
the systme 0V rail). Conenct the calbe to these 2 rows are linked up and
you should eb OK.
-tony
12:55 p.m.
I recently picked up an RX50 for my MicroVAX II. It does not have the cable
with it to connect to the BA123 distribution board, however it seems to fit
a traditional PC floppy disk cable, is that all it needs?
AFAIK it's just a straight-through 34 way ribbon cable with IDC sockets.
It does not have an 'IBM Twist' or anything like that.
It should be possible to make one in a few minutes :-)
-tony
4657
days inactive
4658
days old
11 comments
5 participants
participants (5)
-
arcarlini＠iee.org -
ard＠p850ug1.demon.co.uk -
mcguire＠neurotica.com -
rivie＠ridgenet.net -
robert.jarratt＠ntlworld.com