spdcoin Speed Coin (prototype)

Immagine gioco: Speed Coin (prototype)
Available images:

Romset name: spdcoin.zip
Production year: 1984
Manufacturer: Stern Electronics

Game genre: Puzzle
Category: Puzzle / Misc.

This machine works in MAME This machine works in MAME

Overall emulation: Good
Color emulation: Good
Sound emulation: Good
Graphics emulation: Good
Save states: Supported

In MAME since version: .035b08

The MAME driver of this machine is: galaxian.cpp - Read the code

 Tech info 
 Hardware of this machine:
  • CHIPs [Show details]

    Z80 ("maincpu")cpu 3072000 Hz
    Z80 ("audiocpu")cpu 1789750 Hz
    Speaker ("speaker")audio
    AY-3-8910A ("8910.0")audio 1789750 Hz
    AY-3-8910A ("8910.1")audio 1789750 Hz
    DISCRETE ("konami")audio

  • Screens [Show details]

    This machine uses a single screen:
      Graphic type: Raster
      Screen orientation: Vertical
      Resolution 768 x 224 @ 60.606061 Hz

  • Number of players: 2P Alternated
  • Controllers [Show details]

      Joystick [2 ways]

  • Dip-switches [Show details]

    Default settings in bold
    Free PlayOff

  • ROMs (7 of the machine set) [Show details]

    Referred to MAME version: 0.181

    NameSizeCRC32SHA1StatusIn romset
    spdcoin.2c409665cf1e49 a4570f0d7868fcdd378de3fd9e5346780afcf427 good spdcoin
    spdcoin.2e40961ee59232 b58c1de69d33cf80432012b9b6d8b1e3d8b00662 good spdcoin
    spdcoin.5c2048b4cf64b7 a95d94be2e374b78b4ba49b6931f0c214ff9d033 good spdcoin
    spdcoin.5d204892304df0 01471bf7cbea0090933a253b1b46f80c8f240df5 good spdcoin
    spdcoin.5f2048dd5f1dbc e7c40972a7530cac19ce04de3272244959d337ab good spdcoin
    spdcoin.5h2048ab1fe81b 98057932cb5faad60d425b547590ab22bfc67ff6 good spdcoin
    spdcoin.clr321a2ccc56 58bedaa8b3e21e916295603b38529084b6c0099a good spdcoin

    :  PARENT Machine
    :  CLONE Machine
    :  BIOS
    :  Device


Speed Coin (c) 1984 Stern Electronics.

The objective is to roll the coin to the bottom of the screen and through the hole at the bottom by tilting the coin's platform. This must be done without breaking the coin, and within the shortest time possible. It seems simple, but is super addictive and really fun to play with a group of people.


Main CPU : Z80 (@ 3.072 Mhz)

Sound CPU : Z80 (@ 1.78975 Mhz)

Sound Chips : (2x) AY8910 (@ 1.78975 Mhz)

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 60.61 Hz

Palette colors : 99

Players : 2

Control : 2-way joystick


Game concept by : Thomas Baron

Programmed by : Keith Enge


Game's rom.

Machine's picture.

Giochi Simili

Warning: information in history.dat can differ from the ones present in the rest of the page (taken from MAME) as they come from a different source

Information on spdcoin

0.35b8 [Frank Palazzolo]


- Very low sound. MASH (ID 03783)


- 0.137u2: Stephane Humbert fixed dipswitches and inputs (after verification of the Z80 code) in Speed Coin.

- 0.125u5: Couriersud moved Speed Coin to the Galaxian driver. This fixed the bad sound and background color. Added Discrete sound. Changed visible area to 224x768 and palettesize to 32 colors.

- 25th May 2005: Frank Palazzolo - As far as I know, I'm the only one with a Speed Coin cabinet. It's definitely a prototype, as the cabinet is made of nice plywood and not particle board. Also, the marquee and control panel are made of colored paper, colored electrical tape, and a blown-up xerox copy of a coin face. My understanding is that it came from Stern when it shut down. The boardset is a Scramble, with hand-labelled ROM chips inside. Also, the wiring harness is different, since it only requires a 2-way joystick. When I went to plug this into the Scramble driver in MAME (back in 1999!), I was stymied by the fact that the background was blue in MAME, but black on the "real thing". I traced through the PCB only to find that the monitor was adjusted with the blue gun turned off! When I adjusted it, it matched MAME exactly. In case you are wondering about the sound, the music sounds kind of muted and noisy on the real thing, just like in MAME. Last year, I was stunned to play Speed Coin in an arcade in Nashville, Tennessee. It turns out the Ultracade guys added that game to their Multigame system, under "Arcade Classics"?!. I'm sure they used the ROM images I dumped in my basement, and here it was on a machine in another city. Pretty strange feeling. I really don't think it's a classic. More like "Arcade Relics".

- 0.59: Added dipswitches 'Free Play' and 'Difficulty'.

- 0.53: Changed palettesize to 99 colors.

- 0.37b16: Changed input to 1 player and 8-way Joystick.

- 0.35b8: Frank Palazzolo added Speed Coin (prototype) (Stern 1984).

- 17th March 1999: Frank Palazzolo added Speed Coin prototype to Super Cobra driver.

- 25th October 1998: Dumped Speed Coin (prototype).

LEVELS: 8 (endless)

Other Emulators:

* FB Alpha


Romset: 17 kb / 7 files / 9.97 zip

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