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Infinity Sound Format
Developer: Infinity
Header: Custom
Content: Instructional
Instruments: Combined
Target Output
Output - Digital Audio - No.png Output - MIDI - No.png Output - FM Synthesis.png Output - PSG - No.png
Released: 1986
First Game: ?
  • *.bin
  • *.inf

The Infinity Sound Format (the name is based on the company that developed it) is a file format for storing instructions that are to played through the Infinity Sound Driver to the YM2151 OPM chip on X68000 computers or the YM2203 OPN chip on PC-98-01 computers. This sound driver, and likewise this format, was used in games developed or ported by Infinity and Imagineer.

The driver program is named OPMDRV.X or OPNDRV.COM, and the music files have a *.BIN extension, however, in order to prevent confusion on this site, they should be renamed to used an *.INF extension.




There currently aren't any editors available for the INF Format.


There currently aren't any converters available for the INF Format.


Released Title Sample
1989-11-21 Ultima III: Exodus (PC98)
1990-03-16 Populous (PC98)
1990-03-23 Populous (X68)
1990-07-06 Populous: The Promised Lands (PC98)
1990-07-21 Ultima V: Warriors of Destiny (PC98)
1990-07-21 Ultima V: Warriors of Destiny (X68)
1991-10-25 Powermonger (PC98)
1991-10-25 Powermonger (X68)
1992-08-28 Populous II: Trials of the Olympian Gods (X68)
1993-02-05 Populous II: Trials of the Olympian Gods (PC98)

How to Obtain

INF files are usually present among the files on the disks of each game that use the format. The Hoot archive has several of the music files already extracted in the games they support.


There doesn't appear to be a common header or footer for INF files.