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Human Machine Interfaces MIDI P
Developer: Human Machine Interfaces
Header: HMI
Content: Notational
Instruments: External
Target Output
Output - Digital Audio - No.png Output - MIDI.png Output - FM Synthesis.png Output - PSG - No.png
Released: 1992-??-??
First Game: ?
  • *.hmp
  • *.hmq

Human Machine Interfaces MIDI P (HMP) is a MIDI-like format created by Human Machine Interfaces. The format seems to lack tracking tags, so the format may be something akin to a MIDI type-0 file. The format was superseded by HMI.

The extension is generally .hmp, although Descent used the extension .hmq for song variants destined to be played on FM synthesis sound cards.




Released Title Sample
1994-05-06 Magic Carpet (DOS)
1994-12-?? Wing Commander III: Heart of the Tiger (DOS)
1994-??-?? Aces of the Deep (DOS)
1994-??-?? Sensible Golf (DOS)
1995-03-17 Descent (DOS)
1995-10-30 Whiplash (DOS) (a.k.a. Fatal Racing)
1996-03-13 Descent II (DOS)
1996-??-?? Astérix & Obélix (DOS)

How to Obtain

HMP files usually have to be extracted from game resource files, but are sometimes kept separate.


There are two existing versions of the HMP format. All HMP files begin with "HMIMIDIP". The oldest version has its signature followed by a null byte; while the revised version, dated from January 31, 1995, has the signature followed by this date (HMIMIDIP013195). A second revision, dated from June 15, 1995, resulted in the HMI format.