1942w 1942 (Williams Electronics license)

Immagine gioco: 1942 (Williams Electronics license)
Available images:

Romset name: 1942w.zip
Production year: 1985
Manufacturer: Capcom (Williams Electronics license)

Game genre: Shooter
Category: Shooter / Flying Vertical

This machine is a clone of:
 • 1942 (Revision B)

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: .124u4

The MAME driver of this machine is: 1942.cpp - Read the code

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

    Z80 ("maincpu")cpu 4000000 Hz
    Z80 ("audiocpu")cpu 3000000 Hz
    Speaker ("mono")audio
    AY-3-8910A ("ay1")audio 1500000 Hz
    AY-3-8910A ("ay2")audio 1500000 Hz
    Netlist Sound Device ("snd_nl")audio 93750 Hz

  • Screens [Show details]

    This machine uses a single screen:
      Graphic type: Raster
      Screen orientation: Vertical
      Resolution 256 x 224 @ 60.000000 Hz

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

      Joystick [8 ways]
      Joystick [8 ways]
    Number of buttons: 2

  • Dip-switches [Show details]

    Default settings in bold
    Coin A4 Coins/1 Credit
     3 Coins/1 Credit
     2 Coins/1 Credit
     1 Coin/1 Credit
     2 Coins/3 Credits
     1 Coin/2 Credits
     1 Coin/4 Credits
     Free Play
    Bonus Life20K 80K 80K+
     20K 100K 100K+
     30K 80K 80K+
     30K 100K 100K+
    Coin B4 Coins/1 Credit
     3 Coins/1 Credit
     2 Coins/1 Credit
     1 Coin/1 Credit
     2 Coins/3 Credits
     1 Coin/2 Credits
     1 Coin/4 Credits
     Free Play
    Service ModeOff
    Flip ScreenOff
     Very Difficult
    Screen StopOff

  • ROMs (22 of the parent set, 5 of the clone set) [Show details]

    Referred to MAME version: 0.181

    NameSizeCRC32SHA1StatusIn romset
    sw-03.m316384afd79770 74c7a887fe3d4abfce1dcfec4c75b21ab81adc8c good 1942w
    sw-04.m416384933d9910 9c73ef880f56e30a865be959f8bbdbe79c7ef8e2 good 1942w
    sw-05.m516384e9a71bb6 1f0d52c9282d15f9e4898b3b144ece25d345b71f good 1942w
    sw-06.m68192466f8248 2ccc8fc59962d3001fbc10e8d2f20a254a74f251 good 1942
    sw-07.m716384ec41655e dbe4bb11f2e88574cb43ba5cd216354c3b7f69a6 good 1942w
    sr-01.c1116384bd87f06b 821f85cf157f81117eeaba0c3cf0337eac357e58 good 1942
    sw-02.f28192f8e9ada2 028f554e70425c53faa30a6fe1c45cc16724560a good 1942w
    sr-08.a181923884d9eb 5cbd9215fa5ba5a61208b383700adc4428521aed good 1942
    sr-09.a28192999cf6e0 5b8b685038ec98b781908b92eb7fb9506db68544 good 1942
    sr-10.a381928edb273a 85fdd4c690ed31e6396e3c16aa02140ee7ea2d61 good 1942
    sr-11.a481923a2726c3 187c92ef591febdcbd1d42ab850e0cbb62c00873 good 1942
    sr-12.a581921bd3d8bb ef4dce605eb4dc8035985a415315ec61c21419c6 good 1942
    sr-13.a68192658f02c4 f087d69e49e38cf3107350cde18fcf85a8fa04f0 good 1942
    sr-14.l1163842528bec6 29f7719f18faad6bd1ec6735cc24e69168361470 good 1942
    sr-15.l216384f89287aa 136fff6d2a4f48a488fc7c620213761459c3ada0 good 1942
    sr-16.n116384024418f8 145b8d5d6c8654cd090955a98f6dd8c8dbafe7c1 good 1942
    sr-17.n216384e2c7e489 d4b5d575c021f58f6966df189df94e08c5b3621c good 1942
    sb-5.e825693ab8153 a792f24e5c0c3c4a6b436102e7a98199f878ece1 good 1942
    sb-6.e92568ab44f7d f74680a6a987d74b3acb32e6396f20e127874149 good 1942
    sb-7.e10256f4ade9a4 62ad31d31d183cce213b03168daa035083b2f28e good 1942
    sb-0.f12566047d91b 1ce025f9524c1033e48c5294ee7d360f8bfebe8d good 1942
    sb-4.d62564858968d 20b5dbcaa1a4081b3139e7e2332d8fe3c9e55ed6 good 1942
    sb-8.k3256f6fad943 b0a24ea7805272e8ebf72a99b08907bc00d5f82f good 1942
    sb-2.d12568bb8b3df 49de2819c4c92057fedcb20425282515d85829aa good 1942
    sb-3.d22563b0c99af 38f30ac1e48632634e409f328ee3051b987de7ad good 1942
    sb-1.k6256712ac508 5349d722ab6733afdda65f6e0a98322f0d515e86 good 1942
    sb-9.m112564921635c aee37d6cdc36acf0f11ff5f93e7b16e4b12f6c39 good 1942

    :  PARENT Machine
    :  CLONE Machine
    :  BIOS
    :  Device


1942 (c) 1985 Williams Electronics, Inc.


Released in 1985 (exact month unknown) by Williams under license from Capcom. For more information on the game itself, please see the Capcom entry.

Original products :
1942 (Capcom)

Licensed products :
1942 (Williams Electronics)

Bootlegs/Hacks :
Supercharger 1942 (Two-Bits Score)


Game's ROM.

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 1942

0.124u4 [Nicola Salmoria]

0.33b6 [Nicola Salmoria]

0.19 [Paul Leaman, Nicola Salmoria]

Artwork available


- 0.149u1: hap fixed possibility to crash MAME if membank was 3 in 1942 and clones.

- 19th January 2011: Smitdogg - We got two 1943 boards donated. One is a real Capcom board with working 8751 for decapping, the other is a bootleg. It's a bootleg of the Japan version, hacked to not need the 8751 and it changes the game to be an English version. They hacked up the "Battle of Midway" Japan text to be English, and it actually looks better than the title screen on the official English version I think.

- 0.140: Angelo Salese reworked 1942 interrupts by not using cpu_getiloops() function.

- 0.135u1: Fabio Priuli added driver data struct to 1942.

- 0.134u4: Darran added clone 1942 (Revision A, bootleg). This is the same as the 1942a set, but with a different rom arrangement (larger roms), it appears to be a common bootleg.

- 3rd October 2009: Smitdogg - Andy Conroy dumped unmamed clone of 1942. I haven't looked at them closely and I don't know if they will all be added but... Cool news.

- 0.124u5: Fixed rom names.

- 0.124u4: Quarterarcade added clone '1942 (Williams Electronics license)'. Changed clone '(set 3)' to parent '1942 (Revision B)', '1942 (set 1)' to clone '1942 (Revision A)' and '(set 2)' to '1942 (First Version)'. Renamed (1942b) to (1942), (1942) to (1942a) and (1942a) to (1942b).

- 0.122u8: RansAckeR made some minor improvements to 1942 DIPs.

- 0.116: Aaron Giles flattened colormap and palette in 1942. Changed palettesize to 1536 colors.

- 6th May 2007: Mr. Do - Cleaned up 1942 bezel, thanks to the BYOAC/CAG artwork.

- 0.111u2: Brian Oberholtzer corrected some incorrect dipswitch information in the 1942 driver.

- 0.106u3: Lee Mitchell added save state support to 1942.

- 0.100u4: Aaron Giles converted 1942 driver over to using the new memory_configure_bank calls.

- 0.88u1: Curt Coder merged memory maps and fixed inputs/dips per manual.

- 12th July 2004: 3D ARCADE - New 3D cabinet model for 1942 from Pariah.

- 26th November 2000: Guru added a hacked romset to the 1942 driver.

- 23rd August 2000: Zsolt Vasvari converted 1942, Commando and Vulgus to the tilemap system.

- 0.37b6: Added proms ($600, 700, 800, 900 - 2x tile palette selector?, interrupt/video timing?).

- 1st April 2000: Guru - Dumped 1942 (Bootleg).

- 0.34b4: Nicola Salmoria added clone 1942 (set 3).

- 0.33b7: Changed description to '1942 (set 1)' and clone '1942 (alternate)' to '1942 (set 2)'. Renamed (1942) to (1942a).

- 0.33b6: Nicola Salmoria added 1942. Changed '1942' to clone '1942 (alternate)'. Known issues: Sometimes the alternate verion ends in an endless loop over the sea, and the end of level boss doesn't appear. It hasn't been verified whether "1942" does the same; that version might be a later release which fixes this bug.

- 0.28: Fixed gfx rom loading.

- 0.21: Fixed tempo speed in 1942. It was playing at half speed. Should be correct now. Also fixed a bug in noise volume of PSG. Noise was playing at half volume.

- 0.20: Brad Oliver found a lot of bugs around the code, fixed 1942 background scroll. 1942 has correct colours [Nicola Salmoria]. Paul Leaman providing us the correct color proms. Also fixed rom paging, so now it has no more slowdowns. Fixed jerkiness. Sound is better, too. How about the tempo? How about the pitch? Are they right? Nicola Salmoria changed GENERIC.C to add sound_command_latch_r(): this always return the last command, instead of 0, if there are no more pending commands. This was required by 1942.

- 0.19: Added 1942 (Capcom 1984). Paul Leaman (author of the 1942 emulator) provided exhaustive information on (guess what) 1942, which is now supported. Game is playable with wrong colors and sound.


Other Emulators:

* CottAGE

* FB Alpha

* JEmu

* JEmu2

* Retrocade


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