Level 2.5 teletext demo

This will intend to be a collection of Level 2.5 teletext pages for demonstration and diagnostic purposes.

The only "completed" section so far is the character set diagnostics in magazine 4.

Installing this service on vbit2

• Launch vbit2-config from the command line.
• From the main menu, select Install service.
• From the "install" menu, select Custom service.
• From the "install custom service" menu, select Git repository.
• In the "Enter repository URL" box, enter https://github.com/gkthemac/level-2p5-demo.git
• In the "Enter service name" box, enter Level 2p5 demo.

Sections

Magazine 1 - Demonstrations and diagnostics

This will intend to describe and demonstrate the additional facilities that Level 2.5 teletext can do.

Pages 191 and 192 attempt to show which presentation level a decoder is capable of at a glance.

Page 193 tests the response of the "black foreground" control code on Level 1 and Level 1.5 decoders.

Magazine 2 - Recovered Level 2.5 pages and artworks

This will intend to be both a collection of Level 2.5 teletext pages recovered from actual transmissions, and a collection of new Level 2.5 artworks made by teletext artists.

Pages 201 and 202 are recoveries of Pages From Ceefax. Pages 203 and 204 are the starting of recoveries of Oracle and NOS Teletekst respectively.

Magazine 4 - Character sets

A collection of pages to demonstrate and diagnose the additional character sets.