gkmac
@gkmac.bsky.social
Part-time teletext and retrotech dabbler. Maker of QTeletextMaker.
As if black foreground wasn't controversial enough, should modern Level 1 and 1.5 #teletext decoders obey the double width and double height control codes?
The ETSI spec says they are Level 2.5 only, but in real life some Level 1 and 1.5 decoders made since about 1999-ish do interpret them.
The ETSI spec says they are Level 2.5 only, but in real life some Level 1 and 1.5 decoders made since about 1999-ish do interpret them.
October 2, 2025 at 9:21 PM
As if black foreground wasn't controversial enough, should modern Level 1 and 1.5 #teletext decoders obey the double width and double height control codes?
The ETSI spec says they are Level 2.5 only, but in real life some Level 1 and 1.5 decoders made since about 1999-ish do interpret them.
The ETSI spec says they are Level 2.5 only, but in real life some Level 1 and 1.5 decoders made since about 1999-ish do interpret them.
There's nothing that divides #teletext enthusiasts more than whether or not black foreground attributes should be interpreted on Level 1 decoders. ETSI spec says they shouldn't, in real life all decoders made since about 1990 do.
The test below shows the problems that can happen on old decoders.
The test below shows the problems that can happen on old decoders.
June 21, 2025 at 11:51 AM
There's nothing that divides #teletext enthusiasts more than whether or not black foreground attributes should be interpreted on Level 1 decoders. ETSI spec says they shouldn't, in real life all decoders made since about 1990 do.
The test below shows the problems that can happen on old decoders.
The test below shows the problems that can happen on old decoders.
1/2 Now that BlueSky animates your own uploaded GIFs, a Level 2.5 #teletext tribute to one of the earliest internet memes from the year 2000.
A website "Flash intro" that promised everything but delivered nothing. zombo.com is still there, updated to HTML5 but still with the original soundtrack.
A website "Flash intro" that promised everything but delivered nothing. zombo.com is still there, updated to HTML5 but still with the original soundtrack.
January 10, 2025 at 9:46 PM