mame (0289) • machine ob8 • OB8

machine

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name	sourcefile	sampleof	isbios	isdevice	ismechanical	runnable	description	year	manufacturer	cloneof	romof
ob8	oberheim/ob8.cpp		no	no	no	yes	OB8	1983	Oberheim

snap

OB8 png snap

OB8 jpg snap thumbnail

Key	Length	LastWriteTime	Width	Height	HorizontalResolution	VerticalResolution	PaletteLength	PixelFormat	PropertyItems	PixelSHA1
ob8	7337	25/03/2026 11:24:57	640	480	96	96	0	Format24bppRgb	305:MAME 0.286 (mame0286)	1ec368d51c48dad22ee642cb4738e2b711d72141

driver

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

rom

name	size	crc	sha1	region	offset	status	optional	merge	bios
ob8a80.u24	4096	3d141a93	4d9866687f5dfe09133da9a4feedd9af0862cfbe	z80	0	good	no		a8
ob8a81.u23	4096	fba31703	487258baac9d5bb399c5ad1630249e41302305ba	z80	1000	good	no		a8
ob8a82.u22	4096	e6e99305	f2c4c28cf3feb77fb8e401e191b0f22af6b09e90	z80	2000	good	no		a8
ob8a83.u21	4096	6912415d	77108a9540e4d84833dc0fa8066025d812bb6e7c	z80	3000	good	no		a8

chip

type	tag	name	clock
cpu	z80	Zilog Z80	4000000

device_ref

tag	name
:z80	z80
:nvram	nvram
:pit_8253	pit8253
:pit_8253:counter0	pit_counter
:pit_8253:counter1	pit_counter
:pit_8253:counter2	pit_counter
:led_matrix_device	pwm_display
:latch_pb_u4	output_latch
:latch_bled0	output_latch
:latch_bled1	output_latch

adjuster

name	default
VCF REL	50
VCA REL	50
VCO PW	50
LFO FREQ	50
FM AMNT	50
PWM AMNT	50
PORT AMNT	50
VCO2 DETUNE	50
VCF FREQ	50
VCO2 FREQ	50
VCO1 FREQ	50
BALANCER PROG VOL	50
VCF DCY	50
MASTER TUNE	50
SPEED	50
DEPTH	50
BEND LEVER	50
VIBRATO LEVER	50
VCA DCY	50
VCF ATK	50
VCA ATK	50
VCF SUS	50
VCA SUS	50
VCF MOD	50
VCF RES	50

biosset

name	description	default
a8	OB-8 A8 OS	yes

sound

channels
0

feature

type	status	overall
sound	unemulated

input

players	coins	service	tilt
1		no	no

port, analog

port_tag	analog_masks
:b_switch_0
:b_switch_1
:pot_0
:pot_1
:pot_10
:pot_11
:pot_12
:pot_13
:pot_14
:pot_15
:pot_16
:pot_17
:pot_18
:pot_19
:pot_2
:pot_20
:pot_21
:pot_22
:pot_23
:pot_24
:pot_25
:pot_26
:pot_27
:pot_3
:pot_4
:pot_5
:pot_6
:pot_7
:pot_8
:pot_9
:switch_column_0
:switch_column_1
:switch_column_10
:switch_column_11
:switch_column_12
:switch_column_13
:switch_column_14
:switch_column_15
:switch_column_2
:switch_column_3
:switch_column_4
:switch_column_5
:switch_column_6
:switch_column_7
:switch_column_8
:switch_column_9