mame (0289) • machine m4shocm__g • Showcase Crystal Maze (Barcrest) (MPU4) (SCM 0.1 YD)

machine

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name	sourcefile	sampleof	isbios	isdevice	ismechanical	runnable	description	year	manufacturer	cloneof	romof
m4shocm__g	barcrest/mpu4mod4oki.cpp		no	no	yes	yes	Showcase Crystal Maze (Barcrest) (MPU4) (SCM 0.1 YD)	199?	Barcrest	m4shocm	m4shocm

snap

Key	Length	LastWriteTime	Width	Height	HorizontalResolution	VerticalResolution	PaletteLength	PixelFormat	PropertyItems	PixelSHA1
m4shocm__g	59882	23/09/2026 16:15:19	640	480	96	96	0	Format24bppRgb	305:MAME 0.289 (mame0289)	a424a517633b47c817cc353e1610ba1e233eac96

driver

status	emulation	savestate	requiresartwork	unofficial	nosoundhardware	incomplete	cocktail
preliminary	preliminary	unsupported	yes	no	no	no

rom

name	size	crc	sha1	region	offset	status	optional	merge	bios
scmdy.p1	131072	495e9eea	f10ff85e37538083919af1eec9dabfacd1ac524b	maincpu	0	good	no

chip

type	tag	name	clock
cpu	maincpu	Motorola MC6809	6880000
audio	mono	Speaker
audio	alarmdac	1-Bit DAC
audio	okicard	Barcrest Sampled Sound Program Card	1720000
audio	okicard:msm6376	OKI MSM6376 ADPCM	128000

device_ref

tag	name
:maincpu	mc6809
:50hz	timer
:vfd	msc1937
:ptm_ic2	ptm6840
:pia_ic3	pia6821
:pia_ic4	pia6821
:pia_ic5	pia6821
:pia_ic6	pia6821
:pia_ic7	pia6821
:pia_ic8	pia6821
:meters	meters
:dataport	bacta_datalogger
:hopper	coin_hopper
:mono	speaker
:alarmdac	dac
:nvram	nvram
:duart68681	mc68681
:duart68681:cha	duart_channel
:duart68681:chb	duart_channel
:okicard	mpu4okisnd
:okicard:ptm_ic3ss	ptm6840
:okicard:pia_ic4ss	pia6821
:okicard:msm6376	okim6376
:characteriser	mpu4chrpal
:reel1	stepper
:reel2	stepper
:reel3	stepper
:reel4	stepper

sound

channels
1

input

players	coins	service	tilt
1	4	yes	no

control

type	player	buttons	ways	reverse	minimum	maximum	sensitivity	keydelta	ways2	ways3
only_buttons		7		no

port, analog

port_tag	analog_masks
:AUX1
:AUX2
:BLACK1
:BLACK2
:DIL1
:DIL2
:ORANGE1
:ORANGE2
:hopper:TEST

configuration

Stake Key

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Stake Key	ORANGE1	224

setting

name	value	default
Not fitted / 5p	0	no
10p	32	no
20p	64	yes
25p	96	no
30p	128	no
40p	160	no
50p	192	no
1 GBP	224	no

Jackpot / Prize Key

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Jackpot / Prize Key	ORANGE2	15

setting

name	value	default
Not fitted	0	no
3 GBP	1	no
4 GBP	2	no
5 GBP	8	no
6 GBP	3	no
6 GBP Token	4	no
8 GBP	5	no
8 GBP Token	6	yes
10 GBP	7	no
15 GBP	9	no
25 GBP	10	no
25 GBP (Licensed Betting Office Profile)	11	no
35 GBP	12	no
70 GBP	13	no
Reserved	14	no
Reserved	15	no

Percentage Key

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Percentage Key	ORANGE2	240

setting

name	value	default
Not fitted / 68% (Invalid for UK Games)	0	no
70	16	no
72	32	no
74	48	no
76	64	no
78	80	no
80	96	no
82	112	no
84	128	no
86	144	no
88	160	no
90	176	yes
92	192	no
94	208	no
96	224	no
98	240	no

dipswitch

Unused

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unused	DIL1	1

location

name	number	inverted
DIL1	1	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	1	no

Unused

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unused	DIL1	2

location

name	number	inverted
DIL1	2	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	2	no

Unused

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unused	DIL1	4

location

name	number	inverted
DIL1	3	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	4	no

Unused

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unused	DIL1	8

location

name	number	inverted
DIL1	4	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	8	no

Target Percentage (if key not fitted)

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Target Percentage (if key not fitted)	DIL1	240

location

name	number	inverted
DIL1	5	no
DIL1	6	no
DIL1	7	no
DIL1	8	no

value

name	value	default
Unset (Program Optimum)	0	yes
70	16	no
72	32	no
74	48	no
76	64	no
78	80	no
80	96	no
82	112	no
84	128	no
86	144	no
88	160	no
90	176	no
92	192	no
94	208	no
96	224	no
98	240	no

Token Lockout when full

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Token Lockout when full	DIL2	1

location

name	number	inverted
DIL2	1	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	1	no

Unused

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unused	DIL2	2

location

name	number	inverted
DIL2	2	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	2	no

Scottish Coin Handling

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Scottish Coin Handling	DIL2	4

location

name	number	inverted
DIL2	3	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	4	no

Out of Credit Display Inhibit

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Out of Credit Display Inhibit	DIL2	8

location

name	number	inverted
DIL2	4	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	8	no

OCD Audio Enable

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
OCD Audio Enable	DIL2	16

location

name	number	inverted
DIL2	5	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	16	no

Coin Alarm Inhibit

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin Alarm Inhibit	DIL2	32

location

name	number	inverted
DIL2	6	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	32	no

Token Refill Level Inhibit

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Token Refill Level Inhibit	DIL2	64

location

name	number	inverted
DIL2	7	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	64	no

Single Credit Entry

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Single Credit Entry	DIL2	128

location

name	number	inverted
DIL2	8	no

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Off	0	yes
On	128	no