OS/2 PACK archive
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| − | '''OS/2 | + | '''OS/2 PACK archive''' is a compressed archive format used for software installation on OS/2. |
| − | + | There are at least four or five versions of it. For the version that starts with bytes <code>a5 96 fd ff</code>, see [[OS/2 PACK2 archive]]. | |
| − | + | PACK format is generally associated with the OS/2 PACK.EXE and UNPACK.EXE utilities. | |
| − | + | == Format details == | |
| + | |||
| + | === Compression scheme === | ||
| + | The compression is a kind of [[LZW]] with 12-bit codes. Code 0 marks the end of data; codes 1-256 are literals; 257-4095 are dynamic. If the code table is full, the least-recently-used leaf code is reused. | ||
| + | |||
| + | This is the same compression used by [[LoadDskF/SaveDskF]]. | ||
| + | |||
| + | === Other format details === | ||
| + | Some versions of the format support [[OS/2 extended attributes]], compressed independently following the compressed file data. | ||
== Identification == | == Identification == | ||
| − | + | Known versions of the format start with one of the following byte sequences: | |
| + | a5 96 00 14 | ||
| + | a5 96 14 0a | ||
| + | a5 96 ff ff | ||
| + | a5 96 fe ff | ||
| + | |||
| + | See also [[OS/2 PACK2 archive#Identification]] (<code>a5 96 fd ff</code>). | ||
| + | |||
| + | == Software == | ||
| + | OS/2 software: | ||
| + | * UNPACK.EXE (Included with OS/2; also found in other packages.) | ||
| + | ** [https://archive.org/details/os2sharewarebbs OS/2 Shareware BBS Full Collection] → 33-VDrivers.zip → cirrus1.zip → UNPACK.EXE | ||
| + | * [https://archive.org/details/os2sharewarebbs OS/2 Shareware BBS Full Collection] → 10-Tools.zip → warptlk3.zip → TOOLKIT/BIN/PACK.EXE | ||
| + | |||
| + | Other: | ||
| + | * {{Deark}} | ||
== Sample files == | == Sample files == | ||
| + | Version "<code>00 14</code>": | ||
| + | * {{CdTextfiles|hobbesos29503/2_1/DRIVERS/NCRVID21.ZIP|NCRVID21.ZIP}} → os2vid21.img → *.??@ | ||
| + | |||
| + | Version "<code>14 0a</code>": | ||
| + | * {{CdTextfiles|pier01/029a/40x9su32.zip|40x9su32.zip}} → 4029SU3.ZIP → *.??@ | ||
| + | |||
| + | Version "<code>ff ff</code>": | ||
| + | * [https://archive.org/details/The_Arsenal_Files_Arsenal_Computer The Arsenal Files] → OS2_APP/CS0054-2.DSK → FIX/CS2/*.??@ | ||
| + | |||
| + | Version "<code>fe ff</code>": | ||
* {{CdTextfiles|pier03/035/vpeval.zip|vpeval.zip}} | * {{CdTextfiles|pier03/035/vpeval.zip|vpeval.zip}} | ||
* {{CdTextfiles|cream05/os2/aoacsd2a.zip|aoacsd2a.zip}} | * {{CdTextfiles|cream05/os2/aoacsd2a.zip|aoacsd2a.zip}} | ||
* {{CdTextfiles|cream21/program/greed.zip|greed.zip}} | * {{CdTextfiles|cream21/program/greed.zip|greed.zip}} | ||
* {{CdTextfiles|cream21/os2/admin.zip|admin.zip}} | * {{CdTextfiles|cream21/os2/admin.zip|admin.zip}} | ||
| + | |||
| + | Assorted versions: | ||
* {{DexvertSamples|archive/os2InstallPackage}} | * {{DexvertSamples|archive/os2InstallPackage}} | ||
[[Category:OS/2]] | [[Category:OS/2]] | ||
Latest revision as of 13:02, 2 July 2024
OS/2 PACK archive is a compressed archive format used for software installation on OS/2.
There are at least four or five versions of it. For the version that starts with bytes a5 96 fd ff, see OS/2 PACK2 archive.
PACK format is generally associated with the OS/2 PACK.EXE and UNPACK.EXE utilities.
Contents[hide] |
[edit] Format details
[edit] Compression scheme
The compression is a kind of LZW with 12-bit codes. Code 0 marks the end of data; codes 1-256 are literals; 257-4095 are dynamic. If the code table is full, the least-recently-used leaf code is reused.
This is the same compression used by LoadDskF/SaveDskF.
[edit] Other format details
Some versions of the format support OS/2 extended attributes, compressed independently following the compressed file data.
[edit] Identification
Known versions of the format start with one of the following byte sequences:
a5 96 00 14 a5 96 14 0a a5 96 ff ff a5 96 fe ff
See also OS/2 PACK2 archive#Identification (a5 96 fd ff).
[edit] Software
OS/2 software:
- UNPACK.EXE (Included with OS/2; also found in other packages.)
- OS/2 Shareware BBS Full Collection → 33-VDrivers.zip → cirrus1.zip → UNPACK.EXE
- OS/2 Shareware BBS Full Collection → 10-Tools.zip → warptlk3.zip → TOOLKIT/BIN/PACK.EXE
Other:
[edit] Sample files
Version "00 14":
- NCRVID21.ZIP → os2vid21.img → *.??@
Version "14 0a":
- 40x9su32.zip → 4029SU3.ZIP → *.??@
Version "ff ff":
- The Arsenal Files → OS2_APP/CS0054-2.DSK → FIX/CS2/*.??@
Version "fe ff":
Assorted versions:
