Teletext can't run Doom but can render it

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Teletext can't run Doom but can render it
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Sure is '90s in here

, states:"Since teletext is based on unidirectional data transmission, it is not possible to actually run DOOM in teletext. However, running the original game on some device that also generates a teletext page which holds the scene is just as fine. The packages sent by doom-teletext hold the teletext rendering of the current game frame, as well as a status bar that informs about the current state of the player.

DOOM's original resolution is 320*200 pixels, therefore it is not possible to show all of them on a teletext page, but 4*4 pixels of DOOM have to be combined into a single teletext-pixel. To determine if the pixel in teletext is black or white, the brightness of the 16 DOOM pixels is considered.

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