Date   : Sun, 26 Jun 2005 14:14:08 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Re: 80186 Second Processor

On Sun, 2005-06-26 at 14:35 +0100, BeebMaster wrote:
> Does anybody know if there was a cheese-wedge version of the 80186 second
processor used in the
> Master 512? 

I don't know of one personally. Cheese wedge stuff I've seen (copro and
otherwise):

Prestel adapter
Teletext adapter
IEEE interface
Econet bridge
ARM evaluation kit
Acorn Z80
32016 copro (up to 1MB mem)
Acorn 6502

Other copros that should talk a BBC B:

32016 (1MB/4MB version, eg. ACW)
80286 (ABC 3xx)
Torch Z80 (including Tosca board with high speed serial)
Torch 68000 (Atlas and Neptune)
Torch Graduate (8088 CPU)
'unofficial' 6809 using a Dragon as the coprocessor. I've got a feeling
it needs a D64, not a D32.

I believe someone on the list has a 1MB version of the 80186 copro too.
Dave Moore has an A500 prototype that uses the BBC as the I/O processor
if I remember right...

>  For some reason I thought there was but I don't recall seeing one and
I can't remember
> anybody ever talking about a "BBC Model B 512" 

I've not seen one, although I've got one of the 80186 boards in one of
the Watford copro adapter boxes that would physically hook up to a BBC.
Looking at the images on the 8bs site, a couple of others at least have
such a setup too, so it appears to be a recognised thing to do. That'd
give you a "BBC Model B 512", just not with the cheese-wedge box.

cheers

Jules