ARCADE MANUAL ARCHIVEMachine Specs, DIP Switches & Service Manuals

4nin-uchi Mahjong Jantotsu

Sanritsu · 1983 · raster Vertical · 2P · mahjong · jantotsu

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Display

Type: raster Vertical
Resolution: 256 x 224
Refresh: 60 Hz

Processors

Zilog Z80 @ 4.608 MHz

Audio

SN76489A @ 3.072 MHz
SN76489A @ 3.072 MHz
OKI MSM5205 ADPCM @ 384 kHz
Channels: 1

Controls

Players: 2
Coin slots: 2
mahjong, 19 buttons
mahjong, 19 buttons

DIP Switch Settings

Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more

SwitchSettingOptionsDefault
SW1:1CoinageON 1 Coin/1 Credit ✱OFF 1 Coin/2 Credits1 Coin/1 Credit
SW1:2UnusedON Off ✱OFF OnOff
SW1:3, SW1:4, SW1:5Player vs. CPU timer decrement speedSW1:3 SW1:4 SW1:5ON ON ON 30ON OFF ON 50OFF ON ON 70OFF OFF ON 90ON ON OFF 110 ✱ON OFF OFF 130OFF ON OFF 150OFF OFF OFF 170110
SW1:6, SW1:7, SW1:8Player vs. Player timer decrement speedSW1:6 SW1:7 SW1:8ON ON ON 100ON OFF ON 120OFF ON ON 140OFF OFF ON 160ON ON OFF 180 ✱ON OFF OFF 200OFF ON OFF 220OFF OFF OFF 240180
SW2:1, SW2:2, SW2:3DifficultySW2:1 SW2:2 SW2:3OFF OFF OFF Easy ✱OFF OFF ON NormalON ON ON HardEasy
SW2:4UnusedON Off ✱OFF OnOff
SW2:5Service ModeON Off ✱OFF OnOff
SW2:6Play BGMOFF OffON On ✱On
SW2:7, SW2:8Background ColorSW2:7 SW2:8OFF OFF PurpleON OFF GreenOFF ON Blue ✱ON ON BlackBlue