Subject: Re: Q-bus slot 13?
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: Matt Thomas <>
List: port-vax
Date: 07/24/2000 12:16:55
At 02:58 PM 7/24/2000 -0400, der Mouse wrote:
>So I'm asking the collective wisdom of the experts here, can I make
>this work in my skinny case, or do I have to haul one of the fat cases
>home?  Will it work to leave that board not plugged into anything?  To
>plug it into an ordinary Q-bus slot?  What *is* that slot 13?

Just power only.  No signals.  But you don't need in a skinny (BA23).

>The "new" controllers are different; one is a dual-height M7555 and the
>other is a quad-height M8639.  But the breakout boards, which are
>dual-height and have no number on the handles, appear identical, and
>the foil side etch includes the lettering "5016673-01B1 M9058".

This is the crux of the problem.  You have a RQDX2 (or 1) controller
at home (quad) and a RQDX3 at work.  They use incompatible formats
for their disks (besides that the RQDX2 can only handle a RD52 or RD51).

>Or are the disks supposed to work regardless of the controller, and
>this indicates that all four "new" drives really are broken?  (Or
>perhaps the cables I was using....)

No. No. The problem is that you need to take home a RQDX3 (M7555).
Matt Thomas               Internet:
3am Software Foundry      WWW URL:
Cupertino, CA             Disclaimer: I avow all knowledge of this message