Date   : Mon, 10 Apr 2006 08:20:24 +0100 (BST)
From   : gARetH baBB <hick.bbc@...>
Subject: Re: Electron serial port (cartridge?) info

On Sun, 9 Apr 2006, Sprow wrote:

> In article <1144576152.4438d898c2516@...>,
>    Michael Foot <mjfoot@...> wrote:

> > I've got a cartridge system for the Electron made by Pace called 
> > CommStar. The offset within page &FC is &60 to &6F.

Originally designed by Acron. Pace usually sold the serial cartridge 
packaged with a Pace Nightingale - which is how I got my first modem.

> > Let me know if you want more details. The manual describes what each 
> > address between &FC60 and &FC6F does.

> > http://www.acornelectron.co.uk/info/jafa/i-rs423.html
> >
> > and Andyk Ltd...
> >
> > http://www.acornelectron.co.uk/info/andyk/i-rs423.html
> 
> Thanks for the pointers, they use OSByte 156 as I do, but don't seem to 
> mention where in the memory map they are,

Probably because like the Acron designed version they are based on the 
2681 for one very good reason ... the driver code for the 2681 is in the 
Plus 1 ROM - it was the officially "sanctioned" UART (it's actually a 
DUART) for the Electron.