Date   : Sat, 21 Sep 2002 11:53:21 +0100 (BST)
From   : Brian Widdas <brian@...>
Subject: Re: BBC B with edge-connectors instead of IDC connectors?

On Sat, 21 Sep 2002, Pete Turnbull wrote:

> > >Oh, one other thing - can I safely swap the ADFS ROM out of my Master
> > >into the B? I assume I will need this if I want to use the disk drive on
> > >the B?
> >
> > Probably not possible. The Master is largely backwards compatible
> > with the beeb but it looks like you have a 8271 controller, not
> > the 1770 that the Master uses. I don't think ADFS on a Master
> > supports the 8271.
>
> John's right, it won't work because DNFS is for an 8271 (only) and ADFS is
> for a 1770/1772 (only).  In any case, I'm fairly sure the ADFS for the
> Master is different from the ADFS for the B (different cnotroller
> addresses).

Aside from anything else, there is no ADFS ROM in the Master - it's part
of a larger ROM also containing View, ViewSheet, BASIC, DFS, Edit and
Terminal.

Brian
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