Date   : Mon, 25 Feb 2002 15:46:43 +0100
From   : c.j.thornley@...
Subject: Re: Circuits involving a SAA5050?

Hi,
The SAA5050 is only capable of displaying already predecoded teletext 8bit 
data on an RGB monitor. What you need is a teletext decoder chip which either 
produces serial data or 8bit parrale data. I have a pic chip circuit I have 
found which is capable of reciving cloed caption but I'll have a look on
the phillips website to see if there are any alternatives. I'll have a look
in my teletext decoder at home.

Chris 
> 
> From: "Kris Adcock" <krisa@...>
> Date: Mon 25/Feb/2002 12:59 CET
> To: <bbc-micro@...>
> Subject: [BBC-Micro] Circuits involving a SAA5050?
> 
> Greetings earthlings,
> 
> For several years now I've been maintaining a RiscPC system with a teletext
> decoder card in it. The card is being used to produce an 80x25 screen of
> text as a composite video signal. Now, I need to replace this card, mostly
> because the card has a TV tuner in it, and the property where the computer
> is based does not have a TV licence. So, I'm looking to build my own
> 'serverely simplified' version of the card. Using an SAA5050 chip seems to
> be an obvious choice, so I was wondering if anyone on this mailing list has
> any experience using this chip, or has built anything similar. I'm pretty
> good at taking existing circuit diagrams and butchering them to my own evil
> ends, but not so hot on starting from scratch.
> 
> TIA,
> 
> Kris.
> 
> 
> 


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