The Walking Dead Pro

Identity and evidence precedence

This definition covers all non-h twd_* drivers from twd_105 through twd_160c. The colored c ROMs alter DMD presentation but do not alter physical I/O. IPDB record 6155 identifies the Pro model; record 6156 is the physically different Limited Edition and must not be used for this machine. The exact JP Salas Pro sidecar runs twd_160 and is ground truth for PinMAME addresses, callbacks, initial switch state, ball routing, and mechanism causality. The Stern Pro manual governs physical construction, service addresses, wiring, part numbers, and the distinction between installed and blank driver positions. The isolated twd_156 run uses a firmware revision that is physically compatible with the same Pro playfield and validates the native 128x32 four-bit DMD, public GI address 0, lamp activity, and runtime availability without redistributing ROM content.

Four-ball trough and launcher

Build a four-ball trough with positions 18, 19, 20, and exit position 21 plus entrance/jam opto 22. Initialize all four position switches active. The proven VPX stack orders the exit at 21, ejects with output 1 at angle 90 and force 4, and pulses 22 during release. A ball then rests at shooter-lane switch 23; output 2 fires the automatic plunger with power 50, duration 0.6, and randomness 1.5.

Prison doors and magnet

The two doors move together through dual-winding outputs 3 and 4. In the exact Pro script, asserting power output 3 opens the doors and clears switch 4; de-asserting hold output 4 closes them and sets switch 4. This Pro polarity is the opposite of the behavior represented by the known-working Premium/LE table, so keep it edition-specific. Switch 46 is the ball-passage opto. Output 7 drives a radius-30 centered capture magnet; when it releases a ball within radius 15, apply a random full-circle direction with speed from 15 up to 20.

Drop bank and bash toys

The left bank contains maintained drop switches 9, 10, and 11. Output 12 resets the complete bank. The Well Walker is a passive spring-return bash target in Pro: switch 2 is active at rest, clears on impact, and becomes active again when the target returns. Do not add the Premium/LE well magnet at output 6, because Pro output 6 is physically blank. The Prison Walker is a separate spring-return bash target whose hit pulses switch 3.

Standard devices and ball routes

The three pops use switches 30-32 and outputs 9-11. The slings use switches 26/27 and outputs 13/14. Lower flippers use outputs 15/16, dedicated buttons 84/82, and normally-closed EOS contacts 83/81. Star rollovers are matrix switches 12 and 13; dedicated D6-D8 are unused. The remaining manual matrix entries identify both ramp entrances/exits, top lanes, returns, outlanes, center lane, prison standups, tower standup, right loop, and other ball routes directly in the machine JSON. The Pro has no right spinner, left-loop spinner, right drop target, crossbow, or Bicycle Girl mechanism present on Premium/LE.

Lighting, GI, and physical output boundaries

Instantiate conventional lamps 1-80 and one GI channel at public address 0. The exact twd_160 sidecar consumes the matrix directly; it omits the table render object for lamp 2 and comments out 73-75, but the Pro manual proves those physical lamps exist. This is a rendering omission in that VPX recreation, not permission to remove cabinet hardware.

The official Pro GI map on PDF page 38 / printed page 36 is the physical emitter ledger: one public circuit feeds 28 white playfield bayonet emitters and five white back-panel bayonet emitters. The definition therefore contains exactly 33 GI placements. The back-panel drawing exposes the service/rear socket face; its five socket centers are reflected into player view, normalized within that panel drawing, and projected across the full canonical rear edge at y=0. Treat that full-width projection as an explicit authoring assumption rather than a measured playfield-width relationship. Do not substitute the LE/Premium RGB and split-GI circuits.

The installed coil/flasher devices are outputs 1-4, 7-16, 19, 21, 24-29, 31, and 32, with output 8 and 24 optional. Keep 5, 6, 17, 18, 20, 22, 23, and 30 explicitly unused. The JP table attaches decorative fish-tank flasher callbacks to public 17, 18, 22, and 23 even though the model-specific Pro manual leaves those physical driver positions blank; those virtual table decorations must not become physical coils or flashers in the canonical definition. The isolated ROM run likewise observes output 23 activity, demonstrating that activity alone does not prove installed hardware.

Spatial-source boundary

The archived JP Salas 6.0.0 table is useful only as a coordinate calibration source for shared geometry that visibly agrees with the Pro service maps. Its embedded controller is twd_156h, its splash identifies the LE, and its callbacks include LE-only crossbow, Bicycle Girl, magnet, and auxiliary hardware. Those semantics are explicitly rejected. The proven twd_160 sidecar remains ground truth for Pro runtime behavior, while the Pro manual remains authoritative for physical inventory, quantities, and model differences. Lamp and shared-device centers were accepted only after matching their labeled locations to the manual maps; their placement provenance cites the table that supplies the actual coordinates rather than semantic corroboration that contains no coordinates. Flasher output 32 is the exception: the LE table object coincides with Pro lamp 58, so it was rejected and output 32 is positioned from the Pro coil map alone. No LE-only object was promoted into the Pro definition.

Recreation checklist

• Build the four-ball trough, matrix shooter lane, paired prison doors, prison capture magnet, three-target drop bank, two spring-return bash figures, three pops, two slings, and two lower flippers with the proven initial states and causality above.
• Recreate all manual-listed switches, 80 conventional lamps, all 33 GI emitters behind GI 0, and the ten physical emitters behind the nine installed flasher outputs; keep every manual blank explicit so unknown data cannot be confused with absent hardware.
• Preserve sustained and modulated behavior for the door hold winding, magnet, flashers, GI, and flippers instead of converting every output to a fixed pulse.
• Do not copy the Premium/LE crossbow, right drop target, Bicycle Girl ramp and target, ramp/well magnets, RGB GI channels, auxiliary output board, spinners, or edition-specific switch polarity.
• Use the script's numeric forces and timing as known-working authoring baselines, then align geometry to the manual drawings and real playfield without changing controller causality.

Sources

• manual.walking-dead-pro: Stern WD-PRO-MAN.pdf cached from Internet Archive, SHA-256 03bbf27093ad8b851ffe5b6284b1f14a4ccbce1ca0a68e79800db728bc92a5ae; switch map PDF page 13, coil map page 16, lamp map page 19, GI map page 38, and wiring/assembly pages 39-45.
• vpx.walking-dead-pro.jp-salas-v5.5.0: exact JP Salas Pro script from LegendsUnchained/vpx-standalone-alp4k revision bfc4e21042b59e7c6495604166e9219d52c6b813, SHA-256 18d92b612f8d4f0fe1c0f20131fbeb3588d8393502330ca321deb36c9fcbcac4; initialization and mechanisms at lines 1-165 and 322-525, lamp handling at 661-770.
• vpx-table.walking-dead-jp-salas-6.0.0-geometry: archived table SHA-256 859589b1d1ebea3be6e66844c7126d22d42da0877e551c9f7cf90b76e4c30383, 90,976,256 bytes, extracted with vpxtool git:v0.33.3; shared geometry only, with its embedded LE controller semantics explicitly rejected as described above.
• runtime.walking-dead-pro.boot-start: isolated twd_156.zip run, raw SHA-256 ffb741cfa5f1238d756035c4c113b77ad94fdd2a9e015c21a92af0813595bccb; ROM archive SHA-256 9f0fa7803236c566829037612c9d7732c153e5fa35681b7513324d3ae380a716 remains external.
• IPDB records 6155 and 6156: model identity cross-check performed against the live IPDB pages; 6155 is Pro and 6156 is Limited Edition.