DICE

DICE emulates Discrete logic arcade games.

About this profile

Detail	Value
Type	libretro
Classification	Community fork
Source	https://github.com/mittonk/dice-libretro
Upstream	https://sourceforge.net/projects/dice/
Version	v0.4.3, the tag at this revision
Revision	mittonk/dice-libretro@4b4596b8dd22
Profiled	2026-03-23
Profile	YAML, JSON
Cores	dice
Systems	Discrete logic arcade games

Technical notes

Discrete Integrated Circuit Emulator. Emulates early arcade hardware built from discrete logic components with no CPU. Libretro port by Ken Mitton, based on upstream DICE by Adam B.

Games load as MAME-style ZIP archives matched by CRC32 per ROM chip (chips/rom.cpp:41-218). ROM-less games (Pong, Breakout, etc.) use .dmy dummy launcher files. The system directory is retrieved but never used for file loading (libretro.cpp:60-62).

No BIOS or firmware files required.

Why no files

The system directory is asked for and stored in retro_base_directory, which is named in no other file of the tree and read nowhere: the answer is never used (libretro.cpp:28,60-63).

Profile data

Source analysis

• rom loading:

  • method: MAME-style ZIP, matched by CRC32 per RomDesc
  • source ref: chips/rom.cpp:41-218
  • zip handling: unzip library (unzip/), opened via libretro_zip_filename

• game count: 21

• rom games: 10

• romless games: 11

• filesystem access: no

• system directory used: no

• bios required: no

Next steps

• Get your files, for the setup you play on
• Every system, and the files each one needs
• When a game does not start

Data as of 4 November 2026.