Thursday, 12 July 2012

Latest grab

Here's page 100 from the latest grab I'm running, BBC1 from 23rd April 1982:



I didn't think it was going to be that high quality, but this looks perfect after 8 pages have been integrated.

Of interest on this one is the telesoftware experiment on pages 700-705.  It looks much like later telesoftware but the BASIC keyword aren't tokenised (i.e. in this grab the program is in plain text).  Makes it easier to read though!

Tuesday, 12 June 2012

Ceefax index page from 3rd April, 1976

 Here's an index page from 3/4/76.  The Eurovision Song Contest was on at the time!

This has been generated from actual line data and has only been manually re-touched in a few places: the header (which was showing the wrong page number and date), the two dashed lines on the right hand side and three spurious characters.  All colours are as the original.

Note the person who typed the page used the letter 'O' rather than the number '0' to reference the page numbers.

Monday, 11 June 2012

Early telesoftware (1978)

When you think of telesoftware, you think of mid-80s BBC Micro software broadcast in magazine 7.  However, this wasn't the first telesoftware to be demonstrated.
   
This page describes how a teletext decoder has all of the peripheral parts of a computer (a display and a key pad) and is only missing a CPU in order to become a computer.You added a CPU and voila: a computer on your television.

In 1978, tests were broadcast on ORACLE.  The program starts with $%$%$% (just in case you don't come into the page at subpage 1) and continues from there.

The web page above names a few test programs that were broadcast - the first page of one is shown below.  The data aren't that accurate though - you can see how the header is slightly corrupt, and the data in the page are likely to be just as iffy quality-wise.