HAP

File Format
Name	HAP
Ontology	Electronic File Formats Archiving HAP
Extension(s)	.hap
Released	1992

HAP (or Hap, or Hap and Pah) is compression software for DOS, developed by Harald Feldmann and Hamarsoft.

There are probably just two publicly-distributable versions of HAP: v2.10 and v3.00. There are other versions that are commercial software. The file format is proprietary.

HAP 2.10 compresses a single file. HAP 3.00 makes multi-file compressed archives.

The HAP software consists of a "HAP" program for compression, and a "PAH" program for decompression.

Identification

V3.00 files start with the byte 0x91, followed by ASCII "3HF".

V2.10 files seem to start with bytes 91 4a 2e.

Software

Note that the 3.x releases below all contain the same software. Only the documentation is updated.

• HAP
  • v2.10 (1992-03-11)
  • [https://archive.org/details/HAP300_ZIP Hap