Viking

Partial

Bally1979BY35bally.viking.1979

OPDB IPDB bally/viking-1979.mdbally/viking-1979.json

Wire it up

what an authoring tool needs first
Bind this ROM
viking

2 ROM sets resolve to this machine. Clones share the definition unless a hardware difference is listed.

Controller platform
pinmame.by35

PinMAME already reports logical active state. Do not invert again in the table — normally-closed is a physical fact recorded per switch, not a runtime transform.

Displays

No display inventory recorded yet.

Address space

Coverage

Partial

Real evidence exists, but authoring requirements are still missing or in conflict. Verify before shipping a table.

Completion19%

Progress is derived from the fixed author-readiness requirements. It helps rank unfinished work, but only a 100% author-ready definition passes the publication gate.

Catalog Identity
validated
Address Enumeration
unknown
Semantic Naming
unknown
Physical Wiring
unknown
Mechanisms
unknown
Variant Coverage
candidate
Recreation Knowledge
unknown
Still missing · 13
Driver MappingInput EnumerationInput SemanticsOutput EnumerationOutput SemanticsDisplay InventoryMechanism InventoryMechanism BehaviorPolarityVariant DifferencesRecreation NotesProvenanceSpatial Placement

Recreation notes

Working knowledge that has no schema field yet — edition differences, tuning values, pitfalls.

Coverage: partial - machine identity plus candidate-only I/O attachments. Playfield devices, wiring, mechanisms, and behavior are evidenced only as unverified candidates.

This record was promoted from the generated catalog stub stub.pinmame.viking by the catalog-wide identity pass of 2026-08-29. The promotion resolves machine identity and carries the catalog's residual driver grouping over unchanged, the platform and device attachments below were added by the 2026-08-29/30 candidate passes and assert nothing beyond candidate provenance. Every requirement in the definition's coverage.missing is genuinely outstanding.

Identity

  • PinMAME catalog: root driver viking, description "Viking", manufacturer "Bally", catalog year "1980".
  • OPDB record G57kN-MQ71K (IPDB 2737) names this machine "Viking" (Bally, manufacture date 1979-12-04); the resolved identity rests on the agreement of the PinMAME catalog and this reviewed mapping.
  • The definition's driver list is exactly the clone tree PinMAME declares under viking; whether every listed driver really runs on this physical machine is unverified.

Drivers this record holds

  • viking (1980, Bally).
  • vikingb (2004, Bally / Oliver, clone of viking).

PinMAME source contract (candidate)

  • The pinned PinMAME source declares viking at src/wpc/by35games.c:868 with machine module by35_mBY35_51S; the definition declares controller platform pinmame.by35 from it.

What a curator must establish next

Full input, output, and display enumeration with semantic names; physical wiring and polarity; mechanism inventory and behavior; variant differences across the clone tree; recreation knowledge from a manual, schematic, or known-working table; runtime provenance; and a normalized spatial placement for every physical device. No manual, schematic, or runtime-harness evidence is retained for this machine yet; the candidate sections above are the only retained I/O evidence so far.

ROM sets

Every driver that resolves to this physical machine.

ROM set Description Year Parent Hardware
vikingbViking (7-digit conversion) 2004viking—
vikingViking 1980——

Parent set: viking — clones share this definition unless a hardware difference is noted.

Pinball memory maps

External source LGPL-3.0-only2 maps

RAM layouts published by an independent project and mirrored here at a pinned commit. They are not part of this machine’s definition: nothing below was used as evidence for the definition, and none of it counts towards coverage. Check claims against the upstream project.

Upstream
tomlogic/pinball-memory-maps
Commit
d8693b9

This program makes use of content from the Pinball Memory Maps project.

system-rom-35-7digit.map.json

bally-35-8Kv2format 0.8

maps/bally/as-2518-35/system-rom-35-7digit.map.json

Applies to ROMs
vikingb
Also covers
dollyptbfuturspbhglbtrtbhotdoggbmysticbngndshkbrollstobslbmanibspaceinb
Sections
adjustmentsauditsgame_statehigh_scores
Map JSONMap sourcePlatform JSONPlatform source

bally-35-8K defines the RAM layout this map’s offsets are read against — the map is not interpretable without it.

system-rom-35.map.json

bally-35-6Kv2format 0.8

maps/bally/as-2518-35/system-rom-35.map.json

Applies to ROMs
viking
Also covers
dollyptnfuturspahglbtrtrhotdoggnmysticngndshkrrollstonslbmaniaslbmanicslbmanidspaceinv
Sections
adjustmentsauditsgame_statehigh_scores
Map JSONMap sourcePlatform JSONPlatform source

bally-35-6K defines the RAM layout this map’s offsets are read against — the map is not interpretable without it.

Evidence

Every claim above traces to one of these. When they disagree: a known-working VPX script wins on controller addresses and causality, the manual wins on wiring and construction, pinned PinMAME wins on emulator routing and display layout.

  • PinMAME catalog

    BSD-3-Clause

    pinmame.catalog.8371478a7640

    PinmameGetGames

    8371478a7640
    by
    PinMAME contributors
    rev
    8371478a7640

  • PinMAME source

    BSD-3-Clause

    pinmame.core.8371478a7640

    src/wpc/by35games.c:868 (machine module by35_mBY35_51S)

    src/wpc/by35games.c
    by
    PinMAME contributors
    rev
    8371478a7640

Something wrong or missing?

This definition still has 13 unmet requirements, listed under Coverage above. Fixes belong in the definition itself — editing on GitHub forks it for you and opens the pull request.

Cite a source for anything you change — a manual page, a line in a working VPX script, PinMAME source, or a reading from the machine's own service menu. Claims without provenance cannot be validated.

Edit the definition Edit the note Report a problem
Before you startCONTRIBUTING.mdschemas/machine.schema.jsondocs/MACHINE_DEFINITIONS_PLAN.md How to read a definition

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