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gkmac

@gkmac.bsky.social

Part-time teletext and retrotech dabbler. Maker of QTeletextMaker.

64 Posts62 Follower38 Folgt
gkmac@gkmac.bsky.social · 2mo ago

A tribute to the artist David Hockney, a #teletext recreation of his 1967 work "A Bigger Splash". I find it so odd that it's a teletext artwork with palm trees, that is *not* advertising a holiday.

A Level 2.5 teletext recreation of "A Bigger Splash" by David Hockney. A swimming pool with a diving board on the right. Water is splashing from the pool as if someone has just dived in. In the background is a single storey house with a flat roof and large sliding glass doors, in front of which is a director's chair. To the right of the house are two tall palm trees.A Level 1 teletext recreation of "A Bigger Splash" by David Hockney. A swimming pool with a diving board on the right. Water is splashing from the pool as if someone has just dived in. In the background is a single storey house with a flat roof and large sliding glass doors, in front of which is a director's chair. To the right of the house are two tall palm trees.
gkmac@gkmac.bsky.social · 4mo ago

Level 2.5 #teletext has 16 redefinable and 16 fixed colours. But Level 3.5 allows all 32 colours to be redefined. The 16 colours of CLUTs 2 and 3 are redefined, and by redefining a further 4 colours and using 9 remaining colours as is, we can shoehorn in all 29 colours of Joseph's dreamcoat.

A Level 3.5 teletext page showing some of the lyrics of "Joseph's Coat". The lyrics are: "It was red, yellow, green, brown, scarlet, black, ochre, peach, ruby, olive, violet, fawn, lilac, gold, chocolate, mauve, cream, crimson, silver, rose, azure, lemon, russet, grey, purple, white, pink, orange and blue!" Each named colour appears on a rectangle of the same colour. At the bottom is the text "Rose is CLUT 0:5. Gold, Cream and Lemon are in CLUT 1 and applied with a Level 3.5 only Object."
gkmac@gkmac.bsky.social · 4mo ago

Happy Easter to all the #teletext nerds and fans with a Level 2.5 chocolate egg wrapped in G3 smooth mosaics. Again the trademarked names have been changed to protect the innocent artist from copyright lawyers.

A Level 2.5 teletext graphic of an Easter egg in wrapping. The wrapping has a cartoon of a yellow chick in the middle of a background that is red on the left-half of the egg and blue on the right-half. The egg is set on a plain purple background. At the top left is the text "Crudeberry's". At the bottom right is the text "Godley Egg" on a yellow rectangle.A Level 1 teletext graphic of an Easter egg in wrapping. The wrapping has a cartoon of a yellow chick in the middle of a background that is red on the left-half of the egg and blue on the right-half. The egg is set on a plain magenta background. At the top left is the text "Crudeberry's". At the bottom right is the text "Godley Egg" on a yellow rectangle.
gkmac@gkmac.bsky.social · 7mo ago

A #teletext artwork of Bertha from the animated TV series of the same name, the huge, slightly sentient but lovely factory machine who could make anything. Some three decades before 3D printers became affordable.

A teletext artwork of Bertha, a green industrial machine with features resembling a face including white round eyes, a red nose and a large hatch like a huge mouth. The top of the hatch has white protective flaps that look like teeth and at the bottom is a conveyor belt resembling a tongue. Text above and below the machine reads "Bertha, lovely Bertha, you are a lovely machine!"
gkmac@gkmac.bsky.social · 9mo ago

Were colour bitmap graphics possible in #teletext ? With Level 3.5 DRCS they could have been. But hopelessly impractical; all the bitmap data is stored across 8 subpages and you'd need to wait for them all to come around. Just for that one picture that's the biggest size possible in 16 colours.

A teletext page with a small 16 colour bitmap picture on the right of a Scarlet Macaw parrot sitting on a metal frame. On the left is the explanatory text "Level 3.5 DRCS. Mode 2 characters, 12x10 pixels of 4 bitplanes or 16 colours. 96 DRCS characters over 384 PTUs stored across 8 subtables. 12 rows of 8 columns or 96x120 pixels."