>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 |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '_at_' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL:
http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
Received on Mon Mar 01 1999 - 22:24:30 GMT