Re: Commodore BTX Modul

From: Carlsson, Anders (
Date: 1999-10-06 16:25:07

Nicolas Welte <> wrote:

> Don't know what teletext is. BTX=Bildschirmtext is an early German
> online service based on the CEPT standard, similar implementations 
> exist at least in France and Austria, don't know about GB. You had 
> to dial into the service with a modem or acoustic coupler at the 
> enormous speed of 1200 baud down- and 75 baud upload speed.

Ah. Good old videotex. I saw some hi-res pictures fifteen years ago
in a computer magazine, who claimed the pictures was from a vidotex
service. As I had learned the regular graphics on that system were 
those 2x3 block graphics in eight colours, like teletext, I really
didn't believe the pictures. But maybe those were from a system that
used this BTX device, and in that case, was that an extended protocol
over the regular videotex graphics? I'd better go home and dig through 
those magazines to see if they mention this. 

/Anders Carlsson
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