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Peter Helcmanovsky (Ped) 511ddefc08 z80_unpacker: optimisations: -4T per offset/length bit decoded 
making the 256-alignment of probs array even more baked-in, but there
was no real chance to get rid of that any way
2022-09-14 00:01:51 +02:00
c_unpacker
implement simplified prob update, update unpack.c
2022-09-10 12:01:42 +02:00
src
implement simplified prob update, update unpack.c
2022-09-10 12:01:42 +02:00
z80_unpacker
z80_unpacker: optimisations: -4T per offset/length bit decoded
2022-09-14 00:01:51 +02:00
.gitignore
first version, only very simple greedy packer
2021-11-19 21:40:37 +01:00
Cargo.lock
speed optimizations + progress bar
2021-11-25 22:43:39 +01:00
Cargo.toml
speed optimizations + progress bar
2021-11-25 22:43:39 +01:00
README.md
a few speed and/or compression ratio improvements
2021-11-24 22:35:24 +01:00
UNLICENSE
a few speed and/or compression ratio improvements
2021-11-24 22:35:24 +01:00

README.md

Upkr

Upkr is a simple general purpose lz packer designed to be used in the MicroW8 platform. The compressed format is losely based on Shrinkler with the main difference being that Upkr doesn't differnetiate between literals at odd or even addresses and that I went with rANS/rABS instead of a range coder.

At this point, Upkr should still be considered unstable - the compressed format is not very likely to change but I still want to keep that option open a little longer.

Inspirations:

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Description
Mirror of https://github.com/exoticorn/upkr
Readme 785 KiB
Languages
Rust 51%
Assembly 31.5%
C 8.6%
JavaScript 5%
Makefile 3.9%