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Attribute clash (also known as colour clash or bleeding) is a display artifact caused by limits in the graphics circuitry of some colour 8-bit home computers, most notably the Sinclair ZX Spectrum, where it meant that only two colours could be used in any 8×8 tile of pixels. The effect was also noticeable on MSX software and in some Commodore 64 titles. Workarounds to prevent this limit from becoming apparent have since been considered an element of Spectrum programmer culture.

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  • Attribute clash (also known as colour clash or bleeding) is a display artifact caused by limits in the graphics circuitry of some colour 8-bit home computers, most notably the Sinclair ZX Spectrum, where it meant that only two colours could be used in any 8×8 tile of pixels. The effect was also noticeable on MSX software and in some Commodore 64 titles. Workarounds to prevent this limit from becoming apparent have since been considered an element of Spectrum programmer culture. This problem also happens with the "semigraphic modes" (text modes with graphics features) of the Color Computer and Dragon, but those computers also have non-attributed graphics and with better resolution. Several video game consoles of the era had such video modes that caused such limitations, but usually allowed more than two colours per tile: the NES (Famicom) had only one mode, which was also "semigraphic", and allowed four colours per 16×16 "block" (group of four 8×8 tile) but 16 per screen. The Super NES allowed 16 colours per tile but 256 per screen (among other improvements), and this made the artefact much harder to notice, if at all (except for those who had to program the device). (en)
  • Конфликт атрибутов или клэшинг (англ. attribute clash) — артефакт графики, проявляющийся на старых домашних компьютерах и связанный с аппаратными ограничениями. Наиболее известен пользователям ZX-Spectrum. Деловые компьютеры, в противовес домашним, сужали цветовую палитру, но не допускали подобных ограничений; в любой пиксель можно было писать любой цвет из N. CGA имел всего 4 цвета, а Apple Macintosh был вообще монохромным. (ru)
  • Конфлікт атрибутів або клешинг (англ. attribute clash) — артефакт графіки, що виявляється на деяких старих комп'ютерних відеосистемах і пов'язаний з апаратними обмеженнями. Найбільш відомий користувачам ZX Spectrum. (uk)
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  • Конфликт атрибутов или клэшинг (англ. attribute clash) — артефакт графики, проявляющийся на старых домашних компьютерах и связанный с аппаратными ограничениями. Наиболее известен пользователям ZX-Spectrum. Деловые компьютеры, в противовес домашним, сужали цветовую палитру, но не допускали подобных ограничений; в любой пиксель можно было писать любой цвет из N. CGA имел всего 4 цвета, а Apple Macintosh был вообще монохромным. (ru)
  • Конфлікт атрибутів або клешинг (англ. attribute clash) — артефакт графіки, що виявляється на деяких старих комп'ютерних відеосистемах і пов'язаний з апаратними обмеженнями. Найбільш відомий користувачам ZX Spectrum. (uk)
  • Attribute clash (also known as colour clash or bleeding) is a display artifact caused by limits in the graphics circuitry of some colour 8-bit home computers, most notably the Sinclair ZX Spectrum, where it meant that only two colours could be used in any 8×8 tile of pixels. The effect was also noticeable on MSX software and in some Commodore 64 titles. Workarounds to prevent this limit from becoming apparent have since been considered an element of Spectrum programmer culture. (en)
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  • Attribute clash (en)
  • Конфликт атрибутов (ru)
  • Конфлікт атрибутів (uk)
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