Date   : Mon, 12 Jan 2004 20:33:30 GMT
From   : Pete Turnbull <pete@...>
Subject: Re: IDE Interface for BBC

On Jan 12, 10:38, Phil Blundell wrote:
> on Sun, Jan 11, 2004 at 05:30:05PM +0000, Pete Turnbull wrote:
> > If the connectors for the Filestore Bus are 40-pin or less, they're
the
> > 1MHZ Bus (actually I think it's a 2MHz Bus, like on the Master
series).
>
> Yup.  It looks like the standard 34-pin IDC connector on the back of
the
> E01S.  The E40S has a pair of 37-pin (I think) D-type sockets, which
> connect internally to the 34-way connector on the SCSI host board.
>
> Seems a bit strange.  I can't think of any reason to have a
passthrough
> socket on the E40S unless to allow stacking, but without an address
> selector it wouldn't work to connect multiple drives anyway.  Unless,
I
> suppose, you had to order them pre-configured as either drive 0 or
drive
> 1.

According to the manual, there *is* an address selector on each E20S
(or E40S, etc), but all it says is

11.  Setting up hard disc units

If there is more than one hard disc connected to a Filestore, you must
set the drive numbers and titles to avoid clashes, as follows.

11.1  Setting the drive number

The drive number is set by a switch at the rear of each drive unit.
 Set this to a different number for each hard disk unit, while
Filestore is switched off.

11.2  Setting drive titles

[describes how to start Filestore in maintenance mode and use
*FSNAMEDISC]

There's no diagram, unfortunately.  I do know you can have a maximum of
four hard drive units, so it's probably a small switch; maybe a
two-pole DIL switch.  My service manual is only for the earlier
E01/E20, not the stacking versions, so that's no help either.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York