Bitbuster is a new set of (de)compression-tools for MSX and PC. It was created because I was getting frustrated by POPCOM; it made crash Bombaman. That's why Bitbuster was created.
Bitbuster looks a lot like POPCOM, they both use a similar compression scheme. The compression ratio is pretty much the same, sometimes bitbuster is better than popcom and vice versa. Here's a little comparison (files mostly taken from Bombaman). The lengths stated for POPCOM are the lengths of the compressed data without decompression code.
| File | POPCOM | Bitbuster | Original |
|---|---|---|---|
| bossapp2.mwm | 849 | 815 | 2752 |
| ccompress.cpp | 979 | 929 | 2197 |
| cdecompress.cpp | 1536 | 1197 | 3358 |
| cmatch.cpp | 2310 | 2323 | 6335 |
| crash.raw | 15096 | 14315 | 15463 |
| deepb.raw | 5334 | 5254 | 10085 |
| game.com | 4741 | 4800 | 8320 |
| level11.ge5 | 6532 | 6628 | 30375 |
| level16.bls | 1795 | 1739 | 2670 |
| level4.ge5 | 7869 | 7720 | 30375 |
| level5.ge5 | 8131 | 8162 | 30375 |
| multi.cpm | 9931 | 10002 | 17536 |
| ruins2.mbm | 1490 | 1420 | 5130 |
| swamps1.mbm | 1688 | 1735 | 4557 |
| win.mbm | 818 | 779 | 3193 |
| world1a.mwm | 2131 | 2312 | 5743 |
| world4b.mwm | 3652 | 3600 | 9243 |
| Total | 74882 | 73729 | 187707 |
-README - you're reading this now!
-pack.exe - the cruncher for use in windows
-depack.exe - the decruncher for use in windows
-pack*.* - sourcecode of cruncher (c++)
-depackpc*.* - sourcecode of decruncher (c++)
-depackz80\depack.gen - source of decruncher (z80)
-depackarm\depack.s - source of decruncher (arm)
To compress a file, simply type the following on the commandline:
pack [sourcefile1] ...
This will compress all specified files. You can also use wildcards in filenames. The new files will get the extension .pck.
To decompress a file (on PC), simple type the following on the commandline: depack This will decrunch sourcefile and write the original data to destfile.
-file i/o error handling
-optimize for speed!
-msx-version of packer, anyone?
Read LICENSE
1.2
- Fixed directory paths when using wildcards (NEW in this GitHub release version)
- Added support for compressing multiple files at onces (thanks kanima!)
- Speed up compressing process (still too slow though...)
- Speed up Z80 version of decompressor a lot (thanks to GuyveR800 for some tips)
- Added new license (MIT style)
- Smaller executables
- Display execution time
1.1
- Added support for wildcards
- Added ARM version of decompressor
1.0
- Initial release