Date   : Sat, 06 Aug 2005 20:20:41 +0100
From   : Phil Blundell <philb@...>
Subject: Re: 80186 co-pro

Thanks.  I'll look around for it.

I also found a couple of partially-depopulated 80286 external
coprocessor boards.  Does anybody have a circuit diagram of these, or a
photo of an assembled board that I could use to figure out what goes in
the empty sockets? 

FWIW, the one I have in front of me right now is missing:

32 off 16-pin DIPs, in the southwest corner (presumably DRAM).
2 off 28-pin DIPs, on the north side (presumably EPROMs).
1 off 40-pin DIP, on the north side between the Tube ULA and the EPROMs.
I have no idea what this one is.

p.

On Sat, 2005-08-06 at 19:35 +0100, BeebMaster@... wrote:
> In the first instance you will need the 4 Master 512 DOS plus discs,
> the first of which is the boot disc in a dual ADFS/Acorn DOS format.  I
> think from discussions previously that somebody has made disc images
> of them and no doubt somebody will point you to them.
> 
> After that, PC world is your oyster...unfortunately!
> 
> The best use for the 80186 co-processor in my opinion instead of running
> all that silly PC/DOS plus nonsense is as a nice big RAM disc.  If you put in
> a handy little ROM called CPFS you turn the co-processor memory into a
> 500K RAM disc or printer buffer.  I can e-mail it to you (although it must
> run in ROM and not SRAM) if you can't find it on the internet.
> 
> Best wishes,
> 
> 
> Ian
> 
> ----- Original Message -----
> From: Phil Blundell
> To:  bbc-micro@...
> Sent: Sat, 06 Aug 2005 19:06:57 +0100
> Subject: [BBC-Micro] 80186 co-pro
> 
> So, I just discovered (to my slight surprise) that one of my Masters has
> an internal 80186 coprocessor fitted.  I don't have any disks or
> manuals, though, and I have no idea what software it needs.  Can anybody
> help me out?
> 
> Thanks
> 
> p.
> 
> 
>