Date   : Sat, 21 Sep 2002 18:51:39 +0100
From   : Sprow <info@...>
Subject: Re: BBC B with edge-connectors instead of IDC connectors?

In article <KNEEJIOPPHNNBHBMMGACOEDFCDAA.r.gellman@...>,
   Richard Gellman <r.gellman@...> wrote:
> To summarise everything:

[snip]

> The ADFS is Paged ROM 13 in this
> chip, and can be read from the Master as a ROM image using a standard 
> method
> of disabling interrupts, switching banks, copy the data, switch banks back,
> enable interrupts, and save the data.

No particular reason to disable interrupts,since interrupt handlers must
preserve the ROM state anyway.The important thing is to update the softcopy
at &F4 *before* you poke the ROM latch,
Sprow.