Date   : Wed, 09 May 2001 12:52:43 +0100
From   : "Richard Gellman" <r.gellman@...>
Subject: Re: 3.5" floppies and IDE hard-drives

>I think the key is having the adfs rom from a master if you have this i
>can't see why it wouldn't work in a model B as well

"nice trick if you can do it" ;)

The ADFS ROM in a Master 128 is packed into the "1Mbit ROM", which is a
single chip containing 7 Paged ROMs and the OS ROM, so extracting the ADFS
from it for BBC B usage would be impossible :)

Plus, I'd be willing to bet that it uses to 65C12 Opcodes as well, which
will fail on a BBC B. There are ADFS ROMs for the B, they require the 1770
Disc interface, and I think at least once can be found on TBL!.

-- Richard Gellman