Date   : Fri, 03 Mar 2006 08:08:16 +0000 (GMT)
From   : Sprow <info@...>
Subject: Re: Odd looking Acorn board on Ebay.

In article <006f01c63e4e$4bd3c9e0$3201a8c0@...>,
   David Hunt <dm.hunt@...> wrote:

[snip]

> I've only seen three of these in six years of using eBay! Sprow's ARM
> co-processor board looks very appealing... any news of 6502/Z80/32016
> emulation ?

The last murmor was in this thread:
  http://nelsonit.net/~jon/BBCMicro/2005/08/14/105045.html
and writing an emulated coprocessor is one of the suggested applications for
the ARM coprocessor. 

You really should only need to emulate the 6502 core, since the only
hardware peripheral the Tube code relies on is, um, the Tube ULA. Although
mapped at a different address (so you'd need to keep an eye out for accesses
to &FEF8-&FEFF and translate) the register layout is the same.

Or you could hook out the Tube accesses and translate them into SWIs and
leave the ARM Tube OS to do the hardware bashing.

Either way, you'll all be needing a coprocessor anyway wont you?
  http://www.sprow.co.uk/bbc/armcopro.htm
I'm shameless,
Sprow.