1 Mar
1999
1 Mar
'99
2:24 p.m.
Another observation is that the BA23 chassis has the
connectors under the
control box for an RDxx drive but there doesn't seem to be a controller
in the uVax for them unless this controller was integrated into the CPU
card or something? Its darn difficult to see where the cables come from
and go to in the narrow tower, very unusual design it seems.
The controller (an RQDX1, 2 or 3) plugs into the backplane. The ribbon
cable from it runs under the card cage to the bottom of the backplane,
where there is a distribution board which splits the signals into
connectors for cables connect to up to two hard drives, and one
connector for a floppy.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
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1 Mar
1 Mar
2:55 p.m.
At 11:24 PM 3/1/99 -0500, Megan wrote:
The controller (an RQDX1, 2 or 3) plugs into the
backplane. The ribbon
cable from it runs under the card cage to the bottom of the backplane,
where there is a distribution board which splits the signals into
connectors for cables connect to up to two hard drives, and one
connector for a floppy.
Ahh, I see. However since I don't have an M7555 the cables aren't connected
to anything underneath the backplane. This box has the WQESD for the disks
and the 7546 for the TK50 (now MIA :-). Good to know.
--Chuck
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