hpcalc.org - HP 48 Archive

HP 48 Compression Programs

The first size listed is the downloaded file size and the second size listed is the size on the calculator.

There are 31 files totaling 288KB in this category.

Autocompactador   (details) 48 POR   7KB/3KB
Compresses an entire directory using BZ, but only those files which compress well.
By Gustavo Domit. 1999/03/13

BZ 1.2Get It   (details) 48 ENG   10KB/2KB
The number one compression program for the HP 48GX/SX.
By Mika Heiskanen. 1997/08/21

BZ 1.22   (details) 48 ENG   5KB/3KB
An unofficial update to BZ, with automatically selected speed/memory usage and some features of BZM.
By Mika Heiskanen and Alberto Martin Lombardia. 1998/09/28

BZ Series   (details) 48 ENG   27KB/2KB
Includes 16 different versions of BZ, each with a different memory required to performance ratio. See above for the original program.
By Gustavo Domit. 1998/12/09

BZ2 2010   (details) 49/50 48 ENG   35KB/1KB
This is the successor to BZ from Mika Heiskanen, compressing more and faster than its predecessor, while achieving 100% compatibility. BZ2 typically compresses 40-100% faster than BZ and decompresses ~50% faster, while at the same time seeing the same or better compression. It also uses less memory. Multiple versions are included, including one optimized for speed while achieving the same compression ratio as BZ, and another optimized for compression, while still performing better than BZ.
By Yann Collet. 2010/09/12

BZDIR 3.2Get It   (details) 48 ENG   7KB/1KB
Compresses entire directories with BZ.
By John H Meyers. 1998/06/25

BZLIB 1.0   (details) 49/50 48 ENG   24KB/2KB
Library version of BZ compressor. Make it easier to use the best compressor for the HP 48/49.
By Ricardo Blasco Serrano and others. 2001/12/02

BZM 1.2Get It   (details) 48 ENG   2KB/1KB
ScreenshotMenuline front end to BZ.
By Jack Levy. 1997/08/21

BZM in User RPL   (details) 48 ENG   4KB/1KB
Program similar to BZM but written in User RPL.
By John H Meyers. 1998/07/19

BZPac   (details) 48 ENG   7KB/3KB
More friendly version of BZ.
By HP48-MANIAC. 1997/08/21

BZPlus   (details) 48 ENG   2KB/2KB
Another implementation of BZ: CRUNCHER.
By Harold (Smurphp). 1998/01/18

Compact+   (details) 48 ENG   3KB/3KB
Another compression program that acts as a front-end to RF for making self-extracting variables. For the S series.
By Lutz Vieweg and others. 2017/07/16

COMPRESS   (details) 48 ENG   3KB/2KB
An object compression program based on RF but with safer memory handling and faster decompression.
By Rick Grevelle. 2008/08/14

Compress 1.2/GX   (details) 48 ENG   3KB/3KB
Compression library using the Redundancy Fighter algorithm
By Lutz Vieweg. 2017/07/14

Compressing Library   (details) 48 ENG   4KB/3KB
Front end for Redundance Fighter to make it easier to use.
By David D Bal. 2017/06/29

CoolZIP 0.9 Beta   (details) 48 ENG   2KB/2KB
ScreenshotCoolZIP file compressor.
By Philippe Pamart. 1998/02/26

Flash   (details) 48 ENG   3KB/3KB
Relatively new file compressor which occasionally achieves a better compression ratio than BZ. Also decompresses BZ files.
By Arthur Patrouchev. 1999/05/19

Larry's Cruncher   (details) 48 ENG   5KB/5KB
Another compression program that acts as a front-end to RF for making self-extracting variables. For the S series.
By Lutz Vieweg and others. 2017/07/16

LZD 0.4c   (details) 49/50 48 ENG   21KB/1KB
ScreenshotLZD is a new compression program specifically developed to achieve very high compression and decompression speed. It's typically 3 times faster than BZ and uses less memory, while often providing slightly better compression. Although it is fast, LZD provides very good compression ratio, especially on small and complex objects (e.g. games). For even more speed, a compatible derivative named FastLZD is also provided.
By Yann Collet. 2009/11/01

LZSS   (details) 48 ENG   2KB/2KB
LZSS Compressor.
By E. Lesueur. 1997/08/21

MkLibZ 0.5b   (details) 48 ENG   61KB/11KB
ScreenshotAllows the creation of compressed libraries, using any external compressor or the one included (BZ2). Based on MkLib 2.3 by Detlef Mueller.
By Yann Collet and Detlef Müller. 2009/08/01

Ocrunch   (details) 48 ENG   2KB/2KB
Compressor like LZ8B. (Problems with unpacker?)
Author unknown. 1997/08/21

Packer   (details) 48 ENG   2KB/1KB
Packer is another compression program.
By Mika Heiskanen. 1997/08/21

PGROB/UPGROB 3.4   (details) 48 ENG   5KB/1KB
GROB compression/decompression routines using simple Run-Length Encoding. The unpacker is very small and fast for incorporation into other programs. Includes the famous "Lucy" test image.
By Erik Bryntse. 1997/08/21

PK   (details) 48 ENG   3KB/2KB
PK is an LZ class compressor. The main difference to RF is that PK uses 3-nibble offsets to matches instead of 2 and PK also uses a speedup method for finding matches. Obsoleted by BZ, but included here because decompression is faster.
By Mika Heiskanen. 2008/08/19

PKSG   (details) 48 ENG   4KB/3KB
Another compression program.
By Wilmar Rodriguez (HP48-MANIAC). 1997/09/05

Redundance Fighter 2.4   (details) 48 ENG   8KB/2KB
Redundance Fighter is probably the second most used compression program for the SX/GX. Also includes version 1.21 for the S series, which is necessary to decompress some old RF archives.
By Lutz Vieweg and PHX. 1997/08/21

RF+   (details) 48 ENG   4KB/2KB
ScreenshotAnother compression program that acts as a front-end to RF for making self-extracting variables. For the S series. Also includes a regular version without the front end for the G series.
By Lutz Vieweg and others. 2017/07/16

Stacker4x 1.2   (details) 49/50 48 ENG   9KB/2KB
ScreenshotStacker4x compresses and decompresses on the fly all data handled by the user, so that the user can enjoy the benefits of compression without thinking about it. Everything is fully automated and once the library is installed, it will activate itself and intercept calls to STO and RCL. Compression is provided by FastLZD, and it is very fast (5x-10x faster than BZ), to the point of being hardly noticeable for most objects.
By Yann Collet and Bruno Wyttenbach (stfox). 2009/11/01

TNT-Packer 1.0   (details) 48 ENG   8KB/4KB
ScreenshotExcellent easy-to-use file compressor for the S and G series. This almost always achieves a better compression ratio than BZ, although it takes about 15% longer for compression and decompression. Also decompresses BZ and RF files.
By Damien Harper. 1999/06/07

TNT2 Update1   (details) 49/50 48 ENG   6KB/1KB
TNT2 is a successor to TNT1, using BZ2 at its core. It compresses more and faster than TNT1, while using less memory. TNT2 is 100% compatible with TNT1.
By Yann Collet. 2009/04/25

Part of the HP Calculator Archive,
Copyright 1997-2017 Eric Rechlin.