Mame game : screwloo : Screw Loose (prototype)

Game infos

Description Screw Loose (prototype)

Name screwloo

Manufacturer Mylstar

Year 1983

Runnable yes

System arcade /

Number of players 2P alt

Added to MAME .037b02

Romset size 96 KB

Romset file 13 files

Romset zip 49 B

Language English

Evaluation 70 to 80 (Good)

Genre Shooter

Driver infos

Driver status good

Driver emulation good

Driver color good

Driver sound good

Driver graphic good

Driver cocktail

Driver protection

Driver savestate yes

Inputs infos

Input service yes

Input tilt no

Input players 1

Input buttons

Input coins 2

Controls infos

type	ways	minimum	maximum	sensitivity	keydelta	reverse
doublejoy	8					no

Display infos

type	rotate	flipx	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart
raster	0	no	256	240	61.419025	5000000	318	0	256	256	0	240

Dipswitchs

1st Bonus Atom at
- 20000
- 5000
1st Bonus Hand at
- 25000
- 50000
Coinage
- 1 Coin/1 Credit
- 1 Coin/2 Credits
- 2 Coins/1 Credit
- 2 Coins/2 Credits
Demo Sounds
- Off
- On
Demo mode
- Off
- On
Free Play
- Off
- On
Hands
- 3
- 5
Service Mode
- Off
- On
Sound Test
- Off
- On
Unknown
- Off
- On

Roms list

console	name	size	crc	sha1	region	offset	status	optional
arcade	bg0	4096	1fd5b649	4e2127a4458d54f094934c6f5f154a6db5d0c8b0	bgtiles	0	good	no
arcade	bg1	4096	c8ddb8ba	58137a5043157d08af4d628cf5384d7f530393f7	bgtiles	1000	good	no
arcade	drom1	8192	ae965ade	84a690cba8990fe6406b7cfbd6ea643a48446567	r2sound:audiocpu	c000	good	no
arcade	fg0	8192	f23269fb	9a418a372da18cf33bcfba07202cf2ac7a1dcd1d	sprites	6000	good	no
arcade	fg1	8192	698c395f	46c6700b2943c35c9ac45791652eafbb4a4e059a	sprites	4000	good	no
arcade	fg2	8192	f76e56ca	32252d424f31aa899d6c614f1d1006c2ef49df84	sprites	2000	good	no
arcade	fg3	8192	97d4e63b	e06ecb73148f16b33132767f8f0dffc37eeba5f1	sprites	0	good	no
arcade	rom0	8192	6447fe54	6391c841cafd35dd315d9fac99ed5d8304018747	maincpu	e000	good	no
arcade	rom1	8192	571b65ca	75077f4fab296b3802271fa77af588003570cde6	maincpu	c000	good	no
arcade	rom2	8192	97932b05	6807c6e08edeb93aa7b4969eb78de3cf88a00b72	maincpu	a000	good	no
arcade	rom3	8192	ffde5b5d	50ac0e600935b8b1f8b68c40ad21a179b176e535	maincpu	8000	good	no
arcade	rom4	8192	744a2513	d6e8e016d9af984fae9b6667bedeea069637bd3a	maincpu	6000	good	no
arcade	yrom1	8192	3719b0b5	4f215ca2f15956374c4cd9484b6798f1c4d60fc7	r2sound:speechcpu	e000	good	no

Chips list

name	tag	type	clock
8-Bit R-2R DAC	r2sound:dacvol	audio
AY-3-8913A	r2sound:ay2	audio	2000000
Gottlieb Sound rev. 2	r2sound	audio
I8088	maincpu	cpu	5000000
M6502	r2sound:speechcpu	cpu	1000000
SP0250	r2sound:spsnd	audio	3120000
Speaker	speaker	audio

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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Screw Loose

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History

Arcade Video game published 36 years ago:

Screw Loose (c) 1983 Mylstar Electronics.

The player controls a blue robot character named "Robop" around a 3-D perspective playfield grid, while shooting enemies and gathering items for points and beware the Inchworm it will steal your robotics hands!

Your character, Robop, must navigate his way around a playfied shooting records, snipes and bees to earn points. Gathering hamburgers, nuts, briefcases and atoms will light up the bulbs. The levels advance when all the bulbs have been lit. Robop must avoid the inchworm and pick up his hands if they become detached from his body. The game ends if all Robop hands are pushed off the screen by the inchworm or he is destroyed by the Cherry Bomb.

The left joystick moves Robop, while the right joystick fires. The joystick buttons activate Robop's Super!Charge that both speeds him up and shields him from attack.

- 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

- CONTRIBUTE -

Edit this entry: https://www.arcade-history.com/?&page=detail&id=2331&o=2

High scores

MAMESCORE records : 02/04/2017 13:01

fordie_________________________24.215
hulkiii________________________13.305

Screw Loose (prototype)