Hyper archive
(Checksum info) |
(sample files) |
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Hyper v2.7 (assuming it's legitimate) has only been found as a bare executable file, possibly only as a component of something called ''SF Install''. | Hyper v2.7 (assuming it's legitimate) has only been found as a bare executable file, possibly only as a component of something called ''SF Install''. | ||
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| + | == Sample files == | ||
| + | * {{DexvertSamples|archive/hyperArchive}} | ||
== Links == | == Links == | ||
* [https://books.google.com/books?id=tSLe3yMjc-AC&lpg=PP1&pg=PT315 Information from a PC Magazine article] (Oct 15 1991, p. 316) | * [https://books.google.com/books?id=tSLe3yMjc-AC&lpg=PP1&pg=PT315 Information from a PC Magazine article] (Oct 15 1991, p. 316) | ||
Latest revision as of 13:19, 30 July 2024
Hyper archive (HYP) is a compressed archive format associated with an MS-DOS utility named Hyper. The utility was developed by K. P. Nischke and P. Sawatzki, and distributed as shareware.
Contents |
[edit] Format details
[edit] Checksum algorithm
Each member file has a checksum, in the form of a 32-bit unsigned integer. It is a checksum of the compressed data, not the original data as the v2.5 English documentation implies.
The algorithm starts by initializing the checksum to 0. For each byte: Add the byte's value to the current checksum value (mod 2^32), then rotate the checksum value left by 1 bit.
[edit] Self-extracting archives
Self-extracting HYP archives in EXE format are supported. They are constructed manually, by appending a .HYP file to a copy of the main HYPER.EXE file. In such a file, the archive data is embedded in the overlay segment (refer to MS-DOS EXE#Special file positions).
[edit] Identification
A HYP file begins with bytes 1a 48 50 (if the first member file was compressible), or 1a 53 54 (if not).
[edit] Specifications
- Format info from Corion.net and FileFormats.Info
- There is some format information in the HYPER.REF/HYPER.DOC file included in the distribution.
[edit] Software
- Hyper v2.5 (English)
- Hyper v2.6 (German)
- Hyper v2.7 (German): CD Direkt 1995 03 → CDD/DIREKT/WIN/SF_PRG_2/INSTALL/HYPER.EXE
Hyper v2.7 (assuming it's legitimate) has only been found as a bare executable file, possibly only as a component of something called SF Install.
[edit] Sample files
[edit] Links
- Information from a PC Magazine article (Oct 15 1991, p. 316)
