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RetroBIOS

ArcadeDuck

ArcadeDuck emulates Konami GV, Konami GQ, Namco System 11 and 8 more systems. It reads 10 files, 10 of them required: without a required file it does not start games. A required file is needed only by the machines that use it. Each file below cites the line of source code that reads it.

About this profile
Detail Value
Type standalone
Classification Community fork
Source https://github.com/StillJC/ArcadeDuck
Upstream https://github.com/stenzek/duckstation
Version latest (26caf9c)
Revision StillJC/ArcadeDuck@26caf9cd2791, stenzek/duckstation@fbf93c3ae966
Profiled 2026-10-20
Profile YAML, JSON
Cores arcadeduck
Systems Konami GV, Konami GQ, Namco System 11, Capcom ZN-1, Video System ZN-1, Atlus ZN-1, Eighting ZN-1, Atari ZN-1, Acclaim ZN-1, Tecmo TPS, Taito FX-1
Install this emulator's files

With RetroBat: the installer finds RetroBat and its BIOS folder, then downloads only the files ArcadeDuck reads there and checks each one.

Open the Start menu. Type PowerShell and open it. Paste the line. Press Enter.

PowerShell
&([scriptblock]::Create((irm https://raw.githubusercontent.com/Abdess/retrobios/main/install.ps1))) --emulator arcadeduck
Technical notes

DuckStation fork that runs the PlayStation based arcade boards. RetroBat installs the "latest" release of StillJC/ArcadeDuck unchanged: its ArcadeDuck.exe and resources/arcadedb.yaml are byte for byte the release archive arcadeduck-windows-x64-release.zip, built from 26caf9c.

A game is a MAME style non-merged set identified by its archive name alone through resources/arcadedb.yaml, read from the resources folder beside the executable. Without that file no archive is recognised and nothing boots. ref: src/core/arcade/arcade_database.cpp:28, 1137-1154, 1319, src/core/system.cpp:1599-1616

Arcade boots skip the PlayStation BIOS scan: each board handler loads and checks its own BIOS. The PS1 BIOS search inherited from DuckStation only runs for a standard boot, which the RetroBat launcher never requests since it refuses anything but a .zip set. ref: src/core/system.cpp:1772-1773, emulatorLauncher Generators/ArcadeDuck.Generator.cs:46-48

Board firmware is read from the BIOS directory (EmuFolders::Bios, the [BIOS] SearchDirectory setting). RetroBat points it at the folder of the game when the firmware archive sits there, else at the RetroBat bios folder. ref: src/core/settings.cpp:1791, src/core/arcade/arcade_machine_handler.cpp:140-141, emulatorLauncher Generators/ArcadeDuck.Generator.cs:104-128

Each member of a firmware archive is found by name, case insensitive, and must match the size and CRC32 listed in arcadedb.yaml, then the SHA-1 when one is listed. Any mismatch stops the boot. ref: src/core/arcade/systems/sony/zn/sony_zn.cpp:783-860, src/core/arcade/systems/namco/system11/namco_system11.cpp:198-240

Konami GV uses a fixed archive name and member, hardcoded in bios.cpp rather than read from the database. Konami GQ takes its BIOS member 420b03.27p from the game archive itself, so no separate file is read for it. ref: src/core/bios.cpp:169-184, 233-358, 360-410, src/core/arcade/arcade_machine_handler.cpp:36-38, 76

arcadedb.yaml also declares coh3002c.zip (Capcom ZN-2), sys573.zip (Konami System 573) and gq863.zip (Konami Twinkle), but no machine handler exists for those boards at this revision, so their sets never get to the point of opening a firmware archive. ref: src/core/arcade/arcade_machine_handler.cpp:952-978

Only the members a handler reads are listed under each archive: the 512 KiB main BIOS and the motherboard CAT702 security key for the ZN boards, c76.bin for Namco System 11. The uPD78081 MCU ROM of the ZN boards is undumped and emulated without it. ref: src/core/arcade/systems/sony/zn/sony_zn.cpp:442

Files

Section titled “Files”

10 files: 10 required, 0 optional. 1 more file comes with the app.

By kind: 1 BIOS and 10 BIOS ZIPs.

File Required Hash
konamigv.zip for Konami GV -
namcoc76.zip for Namco System 11 -
coh1000c.zip for Capcom ZN-1 -
coh1002v.zip for Video System ZN-1 -
coh1001l.zip for Atlus ZN-1 -
coh1002e.zip for Eighting ZN-1 -
coh1000w.zip for Atari ZN-1 -
coh1000a.zip for Acclaim ZN-1 -
coh1002m.zip for Tecmo TPS -
coh1000t.zip for Taito FX-1 -
resources/arcadedb.yaml with the app MD5 b65d86f7bdb0

In this collection: 10 in repo and 0 missing.

Required

Section titled “Required”

konamigv.zip required for Konami GV in repo BIOS ZIP

Konami GV BIOS

namcoc76.zip required for Namco System 11 in repo BIOS ZIP

Namco System 11 C76 firmware

  • c76.bin is the internal ROM of the C76 sound and I/O MCU.
  • Contents (1 members):
    • c76.bin: 16.0 KB, CRC32 399faac7, SHA1 ceb184ef0486caf715dd997101999785f67a40b8

coh1000c.zip required for Capcom ZN-1 in repo BIOS ZIP

Capcom ZN-1 (COH-1000C) BIOS

  • The handler always asks for BIOS variant j, the Japanese mask ROM m534002c-13.ic353. msm27c402zb.ic353, the e variant listed beside it, is never read.
  • Contents (2 members):
    • m534002c-13.ic353: 512.0 KB, CRC32 50033af6, SHA1 486d92ff6c7f1e54f8e0ef41cd9116eca0e10e1a
    • cp01.ic652: 8 B, CRC32 bb7ba033, SHA1 966f3aee5d00e1312c455f855915d621e6cb0672

coh1002v.zip required for Video System ZN-1 in repo BIOS ZIP

Video System ZN-1 (COH-1002V) BIOS

coh1001l.zip required for Atlus ZN-1 in repo BIOS ZIP

Atlus ZN-1 (COH-1001L) BIOS

coh1002e.zip required for Eighting ZN-1 in repo BIOS ZIP

Eighting/Raizing ZN-1 (COH-1002E) BIOS

coh1000w.zip required for Atari ZN-1 in repo BIOS ZIP

Time Warner / Atari ZN-1 (COH-1000W) BIOS

coh1000a.zip required for Acclaim ZN-1 in repo BIOS ZIP

Acclaim ZN-1 (COH-1000A) BIOS

coh1002m.zip required for Tecmo TPS in repo BIOS ZIP

Tecmo TPS (COH-1002M) BIOS

coh1000t.zip required for Taito FX-1 in repo BIOS ZIP

Taito FX-1 (COH-1000T) BIOS

Comes with the app

Section titled “Comes with the app”
1 file

arcadedb.yaml comes with the app

Arcade set, board and firmware database

  • Path: resources/arcadedb.yaml
  • Hashes are those of the copy in the release archive, written with CRLF line endings. The repository copy at 26caf9c holds the same text with LF endings.

Next steps

Section titled “Next steps”
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Maintained by Abdess on GitHub. Report a problem.

Packs from release v2026.10.10, .

MIT for the tooling and metadata. BIOS and firmware files are third-party system software, preserved for personal backup, archival and interoperability.