Date   : Mon, 20 Oct 2008 22:19:09 +0100
From   : info@... (Sprow)
Subject: ARM text editor

In article <2f806cd70810200422j36d1e646n27802148dc702fc8@...>,
   Rob <robert@...> wrote:
> 2008/10/20 Phil Blundell <philb@...>:
> >
> > Acorn used to supply an editor called Twin which, I think, ran on their
> > ARM1 coprocessor.  It uses the standard Acorn SWIs for I/O but I think
> > it only depends on about half a dozen of them for correct operation.
>
> I used to use Twin a lot ... it was very nice, being able to cut and
> paste between two different edit buffers (hence the name.)

I had a cursory look through Twin. It needs some 32 bitting to eradicate a
few TSTP's and the like, and to swap out an obsolete OS_Control, but
otherwise looks like it should work fairly easily.

Of course, writing one in C would make far more sense than dredging up TWIN,
using details from the "writing in C" application note,
Sprow.