Hammer (compression)

Hammer (sometimes abbreviated HMR) is a compressed file format used by the RISC OS games Asylum and Oddball. The format and the games were developed by Andy Southgate.

Identification
Files begin with "", followed by a byte.

Specifications

 * asylum.acornarcade.com Documentation → Hammer file format, FastSpr file format

Software

 * nobrainer
 * Hammer Decompressor

Sample files

 * https://telparia.com/fileFormatSamples/archive/hammer/

Links

 * asylum.acornarcade.com