Date   : Thu, 21 Jul 2011 18:47:27 +0100
From   : philpem@... (Philip Pemberton)
Subject: Emulating the 80186 CoPro on an ARM CoPro

On 20/07/11 22:29, J.G.Harston wrote:
> has "serial send" and "serial receive" commands, so there is some sort
> of serialisation somewhere. I'm not sure, maybe using one bit of the
> parallel data.

Are you sure you're not thinking of Serial Poll and Parallel Poll?

As I recall (my copy of IEEE488 is in a box), they're basically ways of 
polling a bus full of 'slave' devices to see if any of them need 
attention (i.e. if they want the attention of the host).

-- 
Phil.
philpem@...          
http://www.philpem.me.uk/