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Exomizer is a cruncher for old 8-bit computers, with focus on the MOS 6502 CPU. It can create self-decrunching executables for a variety of these systems, as well as plain crunched data. Some decrunching code for the target systems is bundled. Approved by: tcberner (mentor) Differential Revision: https://reviews.freebsd.org/D37965
24 lines
1.3 KiB
Text
24 lines
1.3 KiB
Text
Exomizer is a program that compresses files in a way that tries to be as
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efficient as possible but still allows them to be decompressed in environments
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where CPU speed and RAM are limited. For some popular 8-bit computers using
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6502 compatible CPUs it can also generate executable files that decompress
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themselves in memory when run.
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Exomizer operates in two major modes. It has a raw mode that compresses plain
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files and produces plain files. This mode is used by the raw subcommand. All
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other subcommands use the second mode. It requires all source files to be
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targeted to be decrunched at specific addresses in the 16-bit address space of
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the target computer. In this mode, no file can be larger than 64kB since all
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data must be addressable using 16-bits. The targeted mode has the following
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features:
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* It reads plain or .prg files to any given address.
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* It can produce stand-alone self-decrunching files for the following targets:
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- Commodore VIC20, C64, C65, C16/plus4, C128 and PET 4032
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- Atari 400/800 XL/XE
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- Apple ][+ and //e
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- Oric-1 and Oric Atmos
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- BBC Micro B
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* It can produce files for both "in memory" and "from disk" decrunching.
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* It handles RLE-sequences well, no packer is necessary.
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* It is able to link/combine more than one source file into the same crunched
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target file.
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