screwloo: MAME ROM Information.
History:
Screw Loose (c) 1983 Mylstar Electronics.
- TECHNICAL -
Game ID : GV-123
Main CPU : I8086 (@ 5 Mhz)
Sound CPU : (2x) M6502 (@ 1 Mhz)
Sound Chips : (2x) DAC (@ 1 Mhz), (2x) AY8910 (@ 2 Mhz), SP0250 (@ 3.12 Mhz)
Screen orientation : Horizontal
Video resolution : 256 x 240 pixels
Screen refresh : 61.00 Hz
Palette colors : 16
Players : 1
Control : Sticks
Buttons : Start1, Start2
- TRIVIA -
Screw Loose is an unreleased prototype and was Tim Skelly's last game for Mylstar. Only 3 units were produced.
- STAFF -
Designed and programmed by : Tim Skelly
Sound by : Craig Beierwaltes
- SOURCES -
Game's rom.
Machine's picture.
MAME Info:
0.37b2 [Fabrice Frances]
NOTE:
- Screw Loose is a prototype game and was never released.
WIP:
- 0.131u1: Pierpaolo Prazzoli fixed screwy graphics area on one screen in Screw Loose.
- 0.126u4: Fixed audio rom address to $c000. Added dipswitches 'Sound Test' and 2x 'Unknown'.
- 0.126u3: Replaced the 2x AY-3-8910A sound with AY-3-8913A.
- 0.102u5: Added SP0250 (3120000 Hz) speech.
- 0.37b3: Added 2nd M6502 (1MHz) CPU3, 2nd DAC and 2x AY-8910 (2MHz). Changed M6502 CPU2 clock speed to 1MHz. Added the missing cpu2/3 roms.
- 0.37b2: Fabrice Frances added Screw Loose (prototype) (Mylstar 1983).
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Romset: 96 kb / 13 files / 49.4 zip
MAME XML Output:
| | <game name="screwloo" sourcefile="gottlieb.c"> |
| | | <description>Screw Loose (prototype)</description> |
| | | <manufacturer>Mylstar</manufacturer> |
| | | <rom name="rom4" size="8192" crc="744a2513" sha1="d6e8e016d9af984fae9b6667bedeea069637bd3a" region="maincpu" offset="6000"/> |
| | | <rom name="rom3" size="8192" crc="ffde5b5d" sha1="50ac0e600935b8b1f8b68c40ad21a179b176e535" region="maincpu" offset="8000"/> |
| | | <rom name="rom2" size="8192" crc="97932b05" sha1="6807c6e08edeb93aa7b4969eb78de3cf88a00b72" region="maincpu" offset="a000"/> |
| | | <rom name="rom1" size="8192" crc="571b65ca" sha1="75077f4fab296b3802271fa77af588003570cde6" region="maincpu" offset="c000"/> |
| | | <rom name="rom0" size="8192" crc="6447fe54" sha1="6391c841cafd35dd315d9fac99ed5d8304018747" region="maincpu" offset="e000"/> |
| | | <rom name="drom1" size="8192" crc="ae965ade" sha1="84a690cba8990fe6406b7cfbd6ea643a48446567" region="r2sound:audiocpu" offset="c000"/> |
| | | <rom name="yrom1" size="8192" crc="3719b0b5" sha1="4f215ca2f15956374c4cd9484b6798f1c4d60fc7" region="r2sound:speechcpu" offset="e000"/> |
| | | <rom name="bg0" size="4096" crc="1fd5b649" sha1="4e2127a4458d54f094934c6f5f154a6db5d0c8b0" region="bgtiles" offset="0"/> |
| | | <rom name="bg1" size="4096" crc="c8ddb8ba" sha1="58137a5043157d08af4d628cf5384d7f530393f7" region="bgtiles" offset="1000"/> |
| | | <rom name="fg3" size="8192" crc="97d4e63b" sha1="e06ecb73148f16b33132767f8f0dffc37eeba5f1" region="sprites" offset="0"/> |
| | | <rom name="fg2" size="8192" crc="f76e56ca" sha1="32252d424f31aa899d6c614f1d1006c2ef49df84" region="sprites" offset="2000"/> |
| | | <rom name="fg1" size="8192" crc="698c395f" sha1="46c6700b2943c35c9ac45791652eafbb4a4e059a" region="sprites" offset="4000"/> |
| | | <rom name="fg0" size="8192" crc="f23269fb" sha1="9a418a372da18cf33bcfba07202cf2ac7a1dcd1d" region="sprites" offset="6000"/> |
| | | <chip type="cpu" tag="maincpu" name="8088" clock="5000000"/> |
| | | <chip type="cpu" tag="r2sound:audiocpu" name="M6502" clock="1000000"/> |
| | | <chip type="cpu" tag="r2sound:speechcpu" name="M6502" clock="1000000"/> |
| | | <chip type="audio" tag="mono" name="Speaker"/> |
| | | <chip type="audio" tag="r2sound" name="Gottlieb Sound rev. 2"/> |
| | | <chip type="audio" tag="r2sound:dac" name="DAC"/> |
| | | <chip type="audio" tag="r2sound:ay1" name="AY-3-8913A" clock="2000000"/> |
| | | <chip type="audio" tag="r2sound:ay2" name="AY-3-8913A" clock="2000000"/> |
| | | <chip type="audio" tag="r2sound:spsnd" name="SP0250" clock="3120000"/> |
| | | <display tag="screen" type="raster" rotate="0" width="256" height="240" refresh="61.419025" pixclock="5000000" htotal="318" hbend="0" hbstart="256" vtotal="256" vbend="0" vbstart="240" /> |
| | | <input players="1" buttons="2" coins="2" service="yes"> |
| | | | <control type="doublejoy" ways="8" ways2="8"/> |
| | | <dipswitch name="Demo Sounds" tag="DSW" mask="1"> |
| | | | <dipvalue name="Off" value="1"/> |
| | | | <dipvalue name="On" value="0" default="yes"/> |
| | | <dipswitch name="Demo mode" tag="DSW" mask="2"> |
| | | | <dipvalue name="Off" value="0" default="yes"/> |
| | | | <dipvalue name="On" value="2"/> |
| | | <dipswitch name="1st Bonus Atom at" tag="DSW" mask="4"> |
| | | | <dipvalue name="5000" value="0" default="yes"/> |
| | | | <dipvalue name="20000" value="4"/> |
| | | <dipswitch name="Free Play" tag="DSW" mask="8"> |
| | | | <dipvalue name="Off" value="0" default="yes"/> |
| | | | <dipvalue name="On" value="8"/> |
| | | <dipswitch name="Coinage" tag="DSW" mask="80"> |
| | | | <dipvalue name="2 Coins/1 Credit" value="0"/> |
| | | | <dipvalue name="2 Coins/2 Credits" value="16"/> |
| | | | <dipvalue name="1 Coin/1 Credit" value="64" default="yes"/> |
| | | | <dipvalue name="1 Coin/2 Credits" value="80"/> |
| | | <dipswitch name="1st Bonus Hand at" tag="DSW" mask="32"> |
| | | | <dipvalue name="25000" value="0" default="yes"/> |
| | | | <dipvalue name="50000" value="32"/> |
| | | <dipswitch name="Hands" tag="DSW" mask="128"> |
| | | | <dipvalue name="3" value="0" default="yes"/> |
| | | | <dipvalue name="5" value="128"/> |
| | | <dipswitch name="Service Mode" tag="IN1" mask="1"> |
| | | | <dipvalue name="Off" value="1" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="1"> |
| | | | <dipvalue name="Off" value="1" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="2"> |
| | | | <dipvalue name="Off" value="2" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="4"> |
| | | | <dipvalue name="Off" value="4" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="8"> |
| | | | <dipvalue name="Off" value="8" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="16"> |
| | | | <dipvalue name="Off" value="16" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Unknown" tag="r2sound:SB2" mask="32"> |
| | | | <dipvalue name="Off" value="32" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <dipswitch name="Sound Test" tag="r2sound:SB2" mask="64"> |
| | | | <dipvalue name="Off" value="64" default="yes"/> |
| | | | <dipvalue name="On" value="0"/> |
| | | <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="16"/> |
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