ARCADE MANUAL ARCHIVEMachine Specs, DIP Switches & Service Manuals

Screw Loose (prototype)

Mylstar · 1983 · raster Horizontal · 1P · doublejoy · screwloo

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Display

Type: raster Horizontal
Resolution: 256 x 240
Refresh: 61.42 Hz

Processors

Intel 8088 @ 5 MHz
2x MOS Technology 6502 @ 1 MHz

Audio

Gottlieb Sound rev. 2
AD7528 DAC
AD7528 DAC
AY-3-8913 PSG @ 2 MHz
AY-3-8913 PSG @ 2 MHz
GI SP0250 LPC @ 3.12 MHz
Channels: 1

Controls

Players: 1
Coin slots: 2
doublejoy, 8-way, 2 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
DSW:1Demo SoundsOFF OffON On ✱On
DSW:2Demo modeON Off ✱OFF OnOff
DSW:31st Bonus Atom atON 5000 ✱OFF 200005000
DSW:4Free PlayON Off ✱OFF OnOff
DSW:5, DSW:6CoinageDSW:5 DSW:6ON ON 2 Coins/1 CreditOFF ON 2 Coins/2 CreditsON OFF 1 Coin/1 Credit ✱OFF OFF 1 Coin/2 Credits1 Coin/1 Credit
DSW:71st Bonus Hand atON 25000 ✱OFF 5000025000
DSW:8HandsON 3 ✱OFF 53
Service ModeOff ✱OnOff
SB2:1UnknownOFF Off ✱ON OnOff
SB2:2UnknownOFF Off ✱ON OnOff
SB2:3Sound TestOFF Off ✱ON OnOff