Date   : Tue, 09 Jun 2009 14:47:03 +0100
From   : robert@... (Rob)
Subject: Morley Teletext Adapter

2009/6/9 Tim Matthews <tim.matthews@...>:
> When you say record, do you mean record off-air on to SVHS? to be honest
> I wouldn't have a clue. But ISTR to remember from the page number
> indicator in the top left of the Ceefax screen that they were broadcast
> at perhaps a couple per second?

Teletext pages are broadcast in a series of "magazines", 100-199,
200-299 etc.  Typically the set will only display pages going past
that are in the same magazine.  I think there's a flag for exceptions
to this to make a page appear on all magazines.  In any case, they are
broadcast interleaved, so there will be more going past than you can
see, Popular pages (e.g. the indexes) are broadcast more frequently
than just in sequence.

> But there again I suppose whatever method you use you can't capture them
> quicker then they're broadcast!
>
> I've actually stumbled across a load of 5.25" discs that are labelled
> 'teletext' and possibly a date, from the 80s I think... But I don't even
> know if they're Acorn or DOS... I'm trying to get a drive hooked up to a
> pc to take a look what's on them.
>
>

Strangely, I've just come across an archive on an old disc called
"TTXT" that appears to contain a client/server app for sharing a
teletext system across an econet.  I'll have to unpack it (rather than
hex-dump it in ADFS Explorer!) and have a look at what it does.

Rob