Date   : Sun, 07 Feb 1999 01:11:17 +0100
From   : "Mark Usher" <marku@...>
Subject: Re: BBC hard drives

Frank

> I'm considering trying to put a SCSI HDD onto the BBC's 1MHz port,
> according to the instructions in the Harddrive-V1.2.zip file on the BBC
> lives website. Has anyone any hints / recommendations they would make
> before I start? I've already seen that the power connections to
> the circuit
> board given are inconsistent - perhaps there are other things of which I
> should be aware?

Yes. Using the circuit board "as is" will enable the connection of an SCSI
hard drive, but it will not function 100% correctly. I am still unsure as to
the reason why. The only way to make a hard drive work without any
alterations to the design is to connect a MFM / RLL drive to the interface
via an Adaptec 4000/4070 board or similar as described in the documents.

I would be interested to know what you mean by the inconsistency in the
power connections to the circuit board, and to correct any errors that may
have crept in, or make amendments to the original documentation.

Andy Fox [andyfox@...] was meant to be updating the design
of the board. I know it got put on hold and am currently unsure as to its
current state. I know Andy subscribes to this list....

Mark
BBC Documentation Project
http://members.magnet.at/marku/bbc.htm
ICQ: 21008976