base:introduction_to_vertical_tweaks
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— | base:introduction_to_vertical_tweaks [2015-04-17 04:32] (current) – created - external edit 127.0.0.1 | ||
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+ | ====== Introduction to Vertical Tweaks ====== | ||
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+ | Here gathers various ways to manipulate the screen setup by fooling the VIC. Since coders developed more and more weird vic-tricks in the late 80's, more and more weird names of the effects popped up as well. The common name of all these tricks is ' | ||
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+ | ===== Badline-delay ===== | ||
+ | By manipulating $d011 y-scroll values you avoid triggering a badline. Everything stays normal except that VIC will show $3fff-pattern instead of normal graphics. Used for [[base: | ||
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+ | ===== Repeating the last line ===== | ||
+ | It is possible to retrigger display of the last line of a char. This trick will actually read new lines of graphics each line instead of every 8:th line, but the char-matrix is not updated. The result is stretched data in char-mode and shrunken data in bitmap-mode. May be used for [[base: | ||
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+ | ===== Repeating char-line ===== | ||
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+ | It is possible to restart display of a char-line without a badline. With this trick VIC displays the same char-line again. In bitmap-mode the graphics is unchanged, only the color-info does not get updated as no new char-data is being read. May be used for [[base: | ||
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+ | ===== Every line is a badline ===== | ||
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+ | This is what many people call a [[base: | ||
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+ | The area left of the FLI-bug will behave like ' | ||
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+ | ===== Repeating the first line ===== | ||
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+ | Starting from the [[base: | ||
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+ | There have been examples of this effect though in combination with open sideborder, in those cases the d011-trick has been used every 2:nd line. | ||
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+ | ===== Choose your effect ===== | ||
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+ | So, when you want to show some cool gfx in a beautiful way, there are a lot of opportunities. Mostly it depends on what kind of graphics you have. You can not have a pure FLI picture and do FPP with it, you have to compromise. Perhaps you think you need [[base: | ||
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+ | With [[base: | ||
base/introduction_to_vertical_tweaks.txt · Last modified: 2015-04-17 04:32 by 127.0.0.1