Date   : Thu, 30 Nov 1995 16:50:07 +0000 (GMT)
From   : James Fidell <james@...>
Subject: Re: The Opus Challenger disk system

> > Does anybody have any programming information about the Opus 
> > Challenger disk system? I know it used a 1770/1772 disk chip, but 
> > apart from that I've no idea... I'm especially interested in finding 
> > out how one might actually get at the disk controller registers, 
> > since I want to play with a real 1770 before having a go at emulating 
> > one.
> 
> Well, the BBC web pages I used to host on blue.bad.bris.ac.uk are
> still there (but slow). James took a copy of them, and is (I think)
> going to actively maintain them. I don't have the URL of the new pages
> to hand though. One of the information files discussed the 1770/2 in
> some depth.

http://www.OiT.co.uk/~james/BBCMicro/Documentation/wd1770.html

Anyone know where the document actually came from ?

I will be actively maintaining the WWW site, too.

> There are also archives of the mailing list available from the pages.
> 
> I should say that the X-windows bbc emulator has some read only support 
> for disk drives - probably based on the 1770, and the source is available 
> for you to get some ideas from.

But which X-Windows one ?

James.

-- 
 "Yield to temptation --             | Work:  james@...      
  it may not pass your way again"    | Play:  james@...                 
                                     | http://www.OiT.co.uk/~james/
        - Lazarus Long               |              James Fidell