Date   : Tue, 19 Jul 2011 08:40:27 +0100
From   : info@... (Sprow)
Subject: Emulating the 80186 CoPro on an ARM CoPro

In article <20110719074355.ki8qs3389w0wcc0w@...>,
   J.G.Harston <jgh@...> wrote:
> Kieran Mockford wrote:
> > Is it within the bounds of possibility to reasonably emulate the   
> > 80186 CoPro using Sprow's glorious ARM CoPro?
>
> The only thing needed is somebody sitting down and doing
> the work.

Isn't the 80186 the Tube that uses DMA? The FPGA doesn't have the DRQ/DACK
lines wired anywhere nor any logic to support it, so if it does use DMA for
something then the ARM copro is going to come unstuck.

Of course, emulating an 80186 is perfectly possible though, Acorn had a PC
emulator running on an ARM3 at one point,
Sprow.