Difference between revisions of "DUO file format"
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Medium resolution files are 832x273 pixels: | Medium resolution files are 832x273 pixels: | ||
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56784 bytes screen 1 | 56784 bytes screen 1 | ||
56784 bytes screen 2 | 56784 bytes screen 2 | ||
Revision as of 09:18, 6 January 2017
DUO file format *.DU1 *.DUO (low resolution)
*.DU2 (medium resolution)
Created by Anders Eriksson: http://ae.dhs.nu/
These are essentially 2 screens with over-scan interlaced together.
Low resolution files are 416x273 pixels:
16 words palette
56784 bytes screen 1
56784 bytes screen 2
-----------
113600 bytes total
Medium resolution files are 832x273 pixels:
4 words palette
56784 bytes screen 1
56784 bytes screen 2
24 bytes padding if present, otherwise total size is 113576 bytes
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113600 bytes total
Both screens use the same palette, but when viewed the human eye merges the two
alternating images into one.
Back to ST Picture Formats
