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LZD Image Compression
Download LZD Image Compression
Statistics 56 downloads
Folder TI-83 Plus/TI-84 Plus BASIC Miscellaneous Programs
Author
Description Included is a Python program for compressing data, and a calc program for decompressing compressed image data. The algorithm is basically LZ compression, but allows for arbitrary sized runs and indexes. For reference, it took a little less than 3 times as long as a straight memcopy to decompress the test image and draw it to the graph screen. The prgmLZD is 187 bytes and the example splash screen is 533 bytes on calc. Combined they use 720 bytes, compared to 779 bytes for a Pic var of the same dimensions. This means that I actually saved space by putting a decompression program on my calc.
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Short Link http://ceme.tech/DL1777
First Upload 03 Jul 2018 09:58:48 pm
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Contents Test "lzd.zip" in jsTIfied calculator emulator Test entire contents in jsTIfied calculator emulator

File Name File Size Test in Emulator
Pic1.8xi 844 Test "lzd.zip/Pic1.8xi" in jsTIfied calculator emulator
splash.z80 2231 ----
SPLASH.8xv 594 Test "lzd.zip/SPLASH.8xv" in jsTIfied calculator emulator
LZD.z80 1903 ----
LZD.8xp 251 Test "lzd.zip/LZD.8xp" in jsTIfied calculator emulator
zlz.py 2911 ----
Readme.txt 2789 ----

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