Fix graphics format: Difference between revisions
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(Fixed image, added addressing details) |
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The [[fix layer]] uses 8x8 pixels tiles, coded in a 4BPP linear format with mixed columns. Color indexes are coded by pairs and by columns from top to bottom. Note that the pixel positions are swapped in each byte (L/U) and that the first column is column A. | The [[fix layer]] uses 8x8 pixels tiles, coded in a 4BPP linear format with mixed columns. Color indexes are coded by pairs and by columns from top to bottom. Note that the pixel positions are swapped in each byte (L/U) and that the first column is column A. | ||
One tile is 8 * 8 pixels | ==Size== | ||
One tile is 8 * 8 pixels * 0.5 pixels per byte = '''32 bytes'''. | |||
==Addressing== | ==Addressing== | ||
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H: Half, 0 = first (right), 1 = second (left) | H: Half, 0 = first (right), 1 = second (left) | ||
C: Column in half, 0 = left, 1 = right | C: Column in half, 0 = left, 1 = right | ||
L: Line | L: Line | ||
</pre> | </pre> | ||
{{Sig|2H1}} is "C". | {{Sig|2H1|2H1}} is "C". | ||
[[Category:Video system]] | [[Category:Video system]] | ||
Revision as of 05:28, 5 May 2016
The fix layer uses 8x8 pixels tiles, coded in a 4BPP linear format with mixed columns. Color indexes are coded by pairs and by columns from top to bottom. Note that the pixel positions are swapped in each byte (L/U) and that the first column is column A.
Size
One tile is 8 * 8 pixels * 0.5 pixels per byte = 32 bytes.
Addressing
n...nHCLLL n: Tile number H: Half, 0 = first (right), 1 = second (left) C: Column in half, 0 = left, 1 = right L: Line
2H1 is "C".