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Old 1st Feb 2012, 11:47 am   #31
terrykc
Rest in Peace
 
Join Date: Nov 2010
Location: North Hykeham, Lincolnshire, UK.
Posts: 515
Default Re: IMOGen Test Card & Teletext Generator

This talk of Teletext test pages brings back memories of designing test pages for the Stock Exchange TOPIC (Teletext Output Price Information Computer) system over 30 years ago!

The only editing terminal available on the development system was intended for use on the BT Viewdata system and only handled (and displayed!) the features of the original system, so I used my crib sheet of escape sequences to enter 'new' facilities like double height and background colour - and hoped that when I saw the result on my prototype decoder that all would be well!

My repertoire included a crosshatch and pages for checking/setting purity, etc., so that the maintenance staff didn't need to cart test equipment around the streets of the City of London ...
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