PDP-11 QBUS module ordering in BA23

From: no <oliv555_at_arrl.net>
Date: Fri Jan 9 20:38:14 2004

Christopher Cureau wrote:
> The pieces are all coming together on my PDP-11...I received my SCSI card
> today and am waiting on the memory. I've been doing some research into
> what order to insert the cards into a BA23 -- this is what I've come up
> with. Any suggestions otherwise?
>
> Since I haven't seen the QRAM-44B yet, I'm not sure if it's a half height
> or quad height board. If it is a half height, do I need a bus grant
> continuity card in the CD portion of that slot?
>
> Starting with the 3 Q/CD slots on top, then the 5 Q/Q slots:
>

Here's the BA23 ordering as per the manual:

       A B C D
|----------------------------------------
|(quad) CPU | | 1 |
|---------------------------------------- |
| quad or one dual | | 2 |
|---------------------------------------- |
| quad or one dual | | 3 |
|---------------------------------------- |
| | | 4 >----->-------
| quad or duals | | |
|---------------------------------------- |
| | | 5 <-----<-------
| quad or duals | | |
|---------------------------------------- |
| | | 6 >----->-------
| quad or duals | | |
|---------------------------------------- |
| | | 7 <-----<-------
| quad or duals | |
|---------------------------------------- |
| | | 8 >----->------>
| quad or duals | |
-----------------------------------------


-nick o
Received on Fri Jan 09 2004 - 20:38:14 GMT