Date   : Tue, 30 Aug 2005 05:59:43 +0100
From   : "Dom Wright" <domwright@...>
Subject: Re: Acorn OS 160K ??

Ken Lowe wrote
> Tom Seddon wrote:
> > Well... I must admit, I don't know!
> >
> > I got the slot numbers from Tom Walker's B-em, and put equivalent
settings
> > in model-b as a default, so I've only ever seen this behaviour under
> > emulation. (It turns out that if (from the software point of view) you
get
> > RAM banks paged in when writing 12 and 13 to ROMSEL then you get the 96K
> > message.)
>
> Basically, DFS 2.26 expects to see RAM in banks 0, 1, C & D. Make any or
all
> of these RAM banks read only, and the reported memory will change.
>
> Not sure about that. I don't have a real B+ to see what is really held in
> these 4 slots.

Coincidentally, I've recently dug out my B+ 128 and have been using the RAM
banks fir the first time.

The 64K daughter board gives RAM in slots 0, 1, 12 (C) and 13 (D), or W, X,
Y and Z as they are referred to in some of the documentation.

Dom