Alien Challenge (World)
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Display
Type: raster Horizontal
Resolution: 448 x 224
Refresh: 60 Hz
Processors
Motorola MC68000 @ 10 MHz
Zilog Z80 @ 5 MHz
Audio
YMF278B OPL4 @ 33.869 MHz
OKI MSM6295 ADPCM @ 1 MHz
OKI MSM6295 ADPCM @ 1 MHz
Channels: 1
Controls
Players: 2
Coin slots: 2
joy, 8-way, 6 buttons
joy, 8-way, 6 buttons
DIP Switch Settings
Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more
| Switch | Setting | Options | Default |
|---|---|---|---|
| SW1:1 | Credits To Start | OFF 1 ✱ON 2 | 1 |
| SW1:2, SW1:3, SW1:4 | Coin A | SW1:2 SW1:3 SW1:4ON ON ON 5 Coins/1 CreditOFF ON ON 4 Coins/1 CreditON OFF ON 3 Coins/1 CreditOFF OFF ON 2 Coins/1 CreditOFF OFF OFF 1 Coin/1 Credit ✱ON OFF OFF 1 Coin/2 CreditsOFF ON OFF 1 Coin/3 CreditsON ON OFF 1 Coin/4 Credits | 1 Coin/1 Credit |
| SW1:5, SW1:6, SW1:7 | Coin B | SW1:5 SW1:6 SW1:7ON ON ON 5 Coins/1 CreditOFF ON ON 4 Coins/1 CreditON OFF ON 3 Coins/1 CreditOFF OFF ON 2 Coins/1 CreditOFF OFF OFF 1 Coin/1 Credit ✱ON OFF OFF 1 Coin/2 CreditsOFF ON OFF 1 Coin/3 CreditsON ON OFF 1 Coin/4 Credits | 1 Coin/1 Credit |
| SW1:8 | Coin Slots | OFF 1 ✱ON 2 | 1 |
| SW2:1, SW2:2 | Difficulty | SW2:1 SW2:2OFF OFF EasyON OFF Normal ✱OFF ON HardON ON Hardest | Normal |
| SW2:3 | Service Mode | OFF Off ✱ON On | Off |
| SW2:4 | Round Time | ON 32 sOFF 40 s ✱ | 40 s |
| SW2:5 | Demo Sounds | ON OffOFF On ✱ | On |
| SW2:6 | Free Play | OFF Off ✱ON On | Off |
| SW2:7 | Allow Join | ON NoOFF Yes ✱ | Yes |
| SW2:8 | Allow Continue | ON NoOFF Yes ✱ | Yes |
| SW3:1, SW3:2 | Buttons | SW3:1 SW3:2OFF ON 3ON OFF 4OFF OFF 6 ✱ | 6 |
| SW3:3 | Vs. Rounds | ON 3OFF 5 ✱ | 5 |
| SW3:4 | Unused | OFF Off ✱ON On | Off |
| SW3:5 | Unused | OFF Off ✱ON On | Off |
| SW3:6 | Unused | OFF Off ✱ON On | Off |
| SW3:7 | Unused | OFF Off ✱ON On | Off |
| SW3:8 | Unused | OFF Off ✱ON On | Off |