Subject: Re: VS3100 scsi -> VS3200
To: Dave McGuire <mcguire@neurotica.com>
From: m.kangas <kangas@anise.ee.cornell.edu>
List: port-vax
Date: 10/31/1996 14:55:10
On Wed, 30 Oct 1996, Dave McGuire wrote:

> On October 30, you wrote:
> 
>   There is no Qbus SCSI card in a 3100.  There is no Qbus in the 3100,
> either.  The SCSI host adapter on the 3100 is on the cpu board.  

Perhaps in later models, but I've cracked one of these open... and the
scsi board (w. dual ncr5380s) is a *seperate* board, connected to the
motherboard via a ribbon cable that looks suspiciously like the ribbon
cables going board-to-board in the 3200 (which I've also had open).
This scsi board is bolted on top of the aluminum pan which sits over the
motherboard (on the 3100).

> The 3200 is a very different machine.

Agreed. 

Which is what is commonly called "Q-bus"? (in the 3200)
	- the ribbon cables connecting cards (aside from a seperate
	similar-looking cable for the memory boards)
	- the slotted backplane
	- both? neither?

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