Date   : Sat, 24 Jan 2004 13:35:46 +0000 (GMT)
From   : Sprow <info@...>
Subject: Re: BBC Hard Drive Package Update

> P.S. "any part of memory" -- what devices have IO addresses outside 
> the 0xFC00-0xFEFF area?

Sideways RAM upgrades? Shadow screen memory upgrades?
The latter often used the fact that the 6502 PC was in a top bit set address
as a prompt to page in the shadow screen - much like the Master which paged
it in automatically based on the VDU code being in a fixed region in ROM,
Sprow.