Mahjong If...?
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Display
Type: raster Horizontal
Resolution: 256 x 240
Refresh: 60 Hz
Processors
Toshiba TMP90841 @ 8 MHz
Audio
AY-3-8910A PSG @ 1.536 MHz
Channels: 1
Controls
Players: 2
Coin slots: 2
mahjong, 26 buttons
gambling, 2 buttons
mahjong, 26 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 |
|---|---|---|---|
| DSW3:1 | Automatic Rate Change | OFF OffON On ✱ | On |
| DSW3:2 | Service Count | OFF OffON On ✱ | On |
| DSW3:3 | Renchan Rate | OFF OffON On ✱ | On |
| DSW3:4 | W-Bet | OFF OffON On ✱ | On |
| DSW3:5 | Bye-Bye Bonus | OFF OffON On ✱ | On |
| DSW3:6 | Last Chance | OFF FreeON Charge ✱ | Charge |
| DSW3:7 | Auto Tsumo | OFF OffON On ✱ | On |
| DSW3:8 | Background Color | OFF BlackON Blue ✱ | Blue |
| DSW4:1 | Double-tile exchange | OFF OffON On ✱ | On |
| DSW4:2 | Double hand-tile game | OFF OffON On ✱ | On |
| DSW4:3 | Blind-tile game | OFF OffON On ✱ | On |
| DSW4:4 | Don Den Button | OFF F/F ButtonON A Button ✱ | A Button |
| DSW4:5 | Demo Sounds | ON OffOFF On ✱ | On |
| DSW4:6 | Flip Screen | OFF Off ✱ON On | Off |
| DSW4:7 | Animation | OFF Off ✱ON On | Off |
| DSW4:8 | Full Tests | OFF Off ✱ON On | Off |
| DSW1:1, DSW1:2, DSW1:3, DSW1:4 | Pay Out Rate | DSW1:1 DSW1:2 DSW1:3 DSW1:4OFF OFF OFF OFF 96%ON OFF OFF OFF 93%OFF ON OFF OFF 90%ON ON OFF OFF 87%OFF OFF ON OFF 84%ON OFF ON OFF 81%OFF ON ON OFF 78%ON ON ON OFF 75%OFF OFF OFF ON 71% ✱ON OFF OFF ON 68%OFF ON OFF ON 65%ON ON OFF ON 62%OFF OFF ON ON 59%ON OFF ON ON 56%OFF ON ON ON 53%ON ON ON ON 50% | 71% |
| DSW1:5, DSW1:6 | Maximum Bet | DSW1:5 DSW1:6OFF OFF 1ON OFF 5OFF ON 10 ✱ON ON 20 | 10 |
| DSW1:7, DSW1:8 | Minimum Rate to Play | DSW1:7 DSW1:8OFF OFF 1 ✱ON OFF 2OFF ON 3ON ON 4 | 1 |
| DSW2:1, DSW2:2 | Winnings | DSW2:1 DSW2:2OFF OFF 32 24 16 12 8 4 2 1ON ON 50 30 15 8 5 3 2 1 ✱OFF ON 100 50 25 10 5 3 2 1ON OFF 200 100 50 10 5 3 2 1 | 50 30 15 8 5 3 2 1 |
| DSW2:3 | Credits Per Note | OFF 5ON 10 ✱ | 10 |
| DSW2:4, DSW2:5, DSW2:6 | YAKUMAN Bonus | DSW2:4 DSW2:5 DSW2:6OFF OFF OFF NoneON OFF OFF Once at startOFF ON OFF Every 300 coinsON ON OFF Every 500 coins ✱OFF OFF ON Every 700 coinsON OFF ON Every 1000 coins | Every 500 coins |
| DSW2:7 | YAKUMAN Bonus Frequency | ON OnceOFF Twice ✱ | Twice |
| DSW2:8 | Difficulty | ON Normal ✱OFF Hard | Normal |