lzsa VS json65

True.

If you're on your way down this rabbit hole, there's a bunch of old-machine-specific compression algorithms, developed by the emulator community, e.g. LZSA: https://github.com/emmanuel-marty/lzsa

There's quite a lot of retro modern LZ activity too! LZ turns out to be amazing on old machines, often only several times slower than a block copy. Optimal compressors and control over the algorithm have led to some very tight demos.

https://www.brutaldeluxe.fr/products/crossdevtools/lz4/index... LZ4 Data Compression - a rather long and in-depth article looking at LZ4 on the 65816 for the Apple IIgs

https://github.com/emmanuel-marty/lzsa - LZSA - a LZ4-like modern LZ that's more efficient both in speed and compression to LZ4 (at least on the 8 bitters it targets).

JSON parser written in 6502 assembly language\ (69 comments)

The "Library organization" section [1] explains that the json65.s file is the core of the library and the only code necessary to build the library. The additional C code provides a handy tree structure and a callback to pass to the parsing engine.

However, because SAX is a callback-oriented parsing method, you can design your own data structure and write your own callback functions and do without this tree structure.

The additional C code provides similar nice-to-haves, such as string pool interning, a function to print out the aforementioned tree structure, and a wrapper function to parse json from a file.

[1] https://github.com/ppelleti/json65#library-organization