Bonanza Bros. (Mega-Tech) - mame (0280) machine

MAME: 0280 - Released: 2025-08-29T22:26:57 - Lists: 731 - Software: 139884 - rom: 235974 - disk: 11384

machine

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name	sourcefile	sampleof	isbios	isdevice	ismechanical	runnable	description	year	manufacturer	cloneof	romof
mt_bbros	sega/megatech.cpp		no	no	no	yes	Bonanza Bros. (Mega-Tech)	1991	Sega		megatech

display

tag	type	rotate	width	height	refresh	pixclock	htotal	hbend	hbstart	vtotal	vbend	vbstart	flipx
megadriv	raster	0	256	224	59.922738								no
menu	raster	0	256	224	59.922738	5369317	342	63	319	262	27	251	no

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
epr-12664.20	32768	f71e9526	1c7887541d02c41426992d17f8e3db9e03975953	mtbios	0	good	no	epr-12664.20	ver1
epr-12263a.20	32768	07c3f423	50c28bbc2d4349c820d988ae3f20aae3f808545f	mtbios	0	good	no	epr-12263a.20	ver0a
epr-12263b.20	32768	ca26c87a	987a18bede6e54cd73c4434426eb6c302a37cdc5	mtbios	0	good	no	epr-12263b.20	ver0b
epr-12604a.20	32768	884e4aa5	c9008c431a937c084fb475273093ca0b434b5f47	mtbios	0	good	no	epr-12604a.20	ver0aa
mpr-13905a.ic1	524288	6d617940	11d5ff1c2db79632f6dea2edf97f56af2149cea4	mt_slot1:cart	0	good	no
epr-12368-49.ic2	32768	c5101da2	636f30043e2e9291e193ef9a2ead2e97a0bf7380	mt_slot1:cart	300001	good	no

chip

type	tag	name	clock
cpu	maincpu	Motorola MC68000	7670453
cpu	genesis_snd_z80	Zilog Z80	3579545
cpu	mtbios	Zilog Z80	3579540
audio	gen_vdp	Sega 315-5313 Megadrive VDP	53693175
audio	gen_vdp:snsnd	Sega VDP PSG	3579545
audio	speaker	Speaker
audio	ymsnd	YM2612 OPN2	7670453
audio	vdp1	Sega 315-5246 SMS2 VDP	10738620
audio	vdp1:snsnd	Sega VDP PSG	3579540

device_ref

name
m68000
timer
sega315_5313
palette
segapsg
palette
palette
palette
screen
z80
ipt_merge_any_hi
megadrive_io_port
megadrive_io_port
megadrive_io_port
speaker
ym2612
z80
cxd1095
cxd1095
screen
sega315_5246
palette
segapsg
generic_cartslot

biosset

name	description	default
ver1	Ver 1	no
ver0a	Ver 0 Rev A	no
ver0b	Ver 0 Rev B	no
ver0aa	Ver 0 Rev B (alt?)	no

sound

channels
1

device, extension

type	tag	interface	fixed_image	mandatory	extension_names
cartridge	mt_slot1	megatech_cart	1

input

players	coins	service	tilt
2	4	yes	no

control

type	player	buttons	ways	reverse	minimum	maximum	sensitivity	keydelta	ways2	ways3	reqbuttons
joy	1	3	8	no
joy	2	3	8	no

port, analog

port_tag	analog_masks
:BIOS_DSW0
:BIOS_DSW1
:BIOS_IN0
:BIOS_IN1
:BIOS_J1
:PAD1
:PAD2
:RESET

slot, slotoption

slot_name	slotoption_name	slotoption_devname	slotoption_default
mt_slot1

dipswitch

Coin slot 4

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin slot 4	BIOS_DSW0	1

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Inhibit	0	no
Accept	1	yes

Coin slot 3

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin slot 3	BIOS_DSW0	2

value

name	value	default	condition_tag	condition_mask	condition_relation	condition_value
Inhibit	0	no
Accept	2	yes

Coin slot 3/4 value

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin slot 3/4 value	BIOS_DSW0	28

value

name	value	default
1 Coin/1 Credit	28	yes
1 Coin/2 Credits	24	no
1 Coin/3 Credits	20	no
1 Coin/4 Credits	16	no
1 Coin/5 Credits	12	no
1 Coin/6 Credits	8	no
1 Coin/8 Credits	4	no
1 Coin/10 credits	0	no

Coin slot 2 value

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin slot 2 value	BIOS_DSW0	224

value

name	value	default
2 Coins/1 Credit	32	no
1 Coin/1 Credit	64	no
1 Coin/2 Credits	96	yes
1 Coin/3 Credits	128	no
1 Coin/4 Credits	160	no
1 Coin/5 Credits	192	no
1 Coin/6 Credits	224	no
Inhibit	0	no

Coin Slot 1 value

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Coin Slot 1 value	BIOS_DSW1	15

value

name	value	default
Inhibit	0	no
1 Coin/1 Credit	1	yes
1 Coin/2 Credits	2	no
1 Coin/3 Credits	3	no
1 Coin/4 Credits	4	no
1 Coin/5 Credits	5	no
1 Coin/6 Credits	6	no
1 Coin/7 Credits	7	no
1 Coin/8 Credits	8	no
1 Coin/9 Credits	9	no
1 coin/10 credits	10	no
1 coin/11 credits	11	no
1 coin/12 credits	12	no
1 coin/13 credits	13	no
1 coin/14 credits	14	no
1 coin/15 credits	15	no

Time per credit

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Time per credit	BIOS_DSW1	240

value

name	value	default
Free Play	0	no
7:30	16	no
7:00	32	no
6:30	48	no
6:00	64	no
5:30	80	no
5:00	96	no
4:30	112	no
4:00	128	no
3:30	144	no
3:00	160	yes
2:30	176	no
2:00	192	no
1:30	208	no
1:00	224	no
0:30	240	no

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	2

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	4

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	8

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	16

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	32

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_IN0	64

value

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

5

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
5	BIOS_J1	1

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	2

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	4

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	8

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	16

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	32

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	64

value

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

Unknown

name	tag	mask	condition_tag	condition_mask	condition_relation	condition_value
Unknown	BIOS_J1	128

value

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