Date   : Mon, 08 Jun 2009 00:00:01 +0100
From   : bbcmailinglist@... (Ian Wolstenholme)
Subject: Teletext Display Error

The text is "there", if I overtype the control codes at the beginning of
the line then the text appears.  I haven't got a Teletext TV tuned to
analogue at the moment either, but it looks likely that it is black text which
isn't displaying.

Can the Beeb be made to generate black text in Teletext mode, or this 
something I'm just going to have to live with?

Best wishes,



Ian

----- Original Message -----
From: Rob [mailto:robert@...]
To: bbcmailinglist@...
Cc: bbc-micro@...
Sent: Sun, 7 Jun 2009 22:21:21 +0100
Subject: Re: [BBC-Micro] Teletext Display Error

Hmm....

I haven't got a TV that's actually tuned into the analogue broadcasts
to check, but it's possible that that are using Black Text ..
Logically this would be CHR$(128) bt the SAA5050, like most chipsets
of it's era, doesn't support it,

If you save a page, then *DUMP it, see if the text is there, preceeded
with an &80.

Rob

2009/6/7 Ian Wolstenholme <bbcmailinglist@...>:
> I've noticed a problem with certain Teletext pages being displayed
> incorrectly via the Teletext adapter.
>
> Actually, I have been aware of this problem for several years but I put
> it down to bad tuning on my Acorn Teletext adapter, but now I've noticed
> the same problem using the Morley Teletext adapter on a different aerial.
>
> It occurs on lines where there is a coloured background, and the text
> colour does not display, leaving a "blank" line of colour.
>
> If anyone is still using Teletext and can go to page 704 on BBC-1, this
> is an index of the local government results between pages 707 and 712.
> On my Teletext adapters, the two lines for page 707 are blank, the first
> line is white and the second line is yellow. ?The second line for page
> 709 and the first line for page 710 are both white.
>
> (I can probably take some pictures to illustrate if it will help.)
>
> Is there a way to cure this problem?
>
> Best wishes,
>
>
>
> Ian
>
>
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>
>

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