6845 CRTC, Microvitec VDU/BBC Micro sync waveforms (was Re: CoCo's *are* real...)

From: Philip Pemberton <philpem_at_dsl.pipex.com>
Date: Wed Sep 11 02:53:00 2002

Sorry about the last message (the one that contained HTML). I've just
reinstalled Win98 and Outlook and forgot that OE5.5 defaulted to HTML format
for mail.

Tony Duell wrote:
> But what chipset does this decoder use? Some of them do contain sync
> generators, as they can be used as general-purpose display devices
> too. The SAA524x series can, for example.
The board is from a Ferguson T14T (Thomson TX91 chassis?) and has two ICs
onboard - a Texas Instruments IC labelled:
EUROTEXT
TELETEXT DECODER
CF70204NW
  59A5V3W
The other one is also TI, labelled:
58D71DT
CF72306
DATA SLICER
Anyone got a Ferguson T14T or Thomson TX91 service manual? I need the part
number of the TTX decoder mentioned in the schematic. I think it originally
used a Philips SAA52xx IC, not sure though.

Thanks.
--
Phil.
philpem_at_dsl.pipex.com
http://www.philpem.dsl.pipex.com/
Received on Wed Sep 11 2002 - 02:53:00 BST

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