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bnzabrosj: MAME ROM Information.


Bonanza Bros. (c) 1990 Sega.

One or two players take on the roles of Robo and Mobo, two cat-burgling brothers who must carefully make their way through a variety of scrolling platform-based levels, stealing a number of valuable items (as highlighted on a cut-away map displayed in the middle of the screen). Once all of the treasure items have been acquired, the brothers must quickly make their way to the roof to escape in a waiting airship. Each stage must be completed within a set time limit.

Bonanza Bros. introduced a 3D element to the traditional 2D platform gameplay. Both players and enemies can move between the front and back of the platforms, with the enemy guards having a 'field-of-vision'. This made it possible for players to hide from the guards by ducking behind furniture, as well as into alcoves and stairwells.

If players get shot by the guards too many times, or if all of the treasure is not recovered and the escape point reached before the time limit expires, the brothers end up in jail and it's game over.

Each of the game's ten stages is set in a different building the brothers have to burgle. These include a bank, a millionaire's mansion, a casino, a mint, an art gallery and a treasury.


Sega System 24 hardware

Main CPU : (2x) 68000 (@ 10 Mhz)

Sound Chips : YM2151 (@ 4 Mhz), DAC

Players : 2

Control : 8-way joystick

Buttons : 3


Released in June 1990.


The US version differs from other territories with the addition of the "Winners Don't Use Drugs" screen displayed at the start of a game.


* Consoles :

Sega Master System (1991)

Sega Mega Drive (1991)

NEC PC-Engine (1992)

NEC PC-Engine Super CD-ROM2 (1992)

Sony PlayStation 2 (2003, "Sega Ages 2500 Vol. 6 : Bonanza Brothers")

Sony PlayStation 2 (2006, "Genesis Collection")

Sony PSP (2006, "Genesis Collection")

Nintendo Wii (2006, "Virtual Console" - Mega Drive version)

* Computers :

Amstrad CPC (1991)

Atari ST (1991)

Commodore Amiga (1991)

Commodore C64 (1991)

Sinclair ZX Spectrum (1991)

Sharp X68000 (1991)


Game's rom.

MAME Info:

0.74u2 [Olivier Galibert]

0.68 [Olivier Galibert]


- 0.144: Implemented FRC hook-up to Sega System 24 HW, fixes missing SFXs to Bonanza Bros [Angelo Salese, Phil Bennett, Charles MacDonald].

- 10th November 2011: Angelo Salese - Investigated with Phil Bennett and Charles MacDonald about why Bonanza Bros never ever played samples from when it was marked as working. It turned out that Sega System 24 HW uses a FRC that also does a previously unemulated IRQ service.

- 0.133u1: Renamed (bnzabrsj) to (bnzabrosj).

- 0.121u2: Changed description to 'Bonanza Bros (US, Floppy DS3-5000-07d? Based)' and clone '(Japan, Floppy DS3-5000-07b)' to '(Japan, Floppy DS3-5000-07b Based)'.

- 0.101: Added new disk image ds3-5000-07b.img to clone (Japan, Floppy DS3-5000-07b).

- 0.100u4: David Haywood and Team Japump added clone Bonanza Bros (Japan, Floppy DS3-5000-07b). Changed parent description to 'Bonanza Bros (US, Floppy DS3-5000-07d?)'.

- 0.79: Added 3rd button.

- 0.78: Fixed user1 roms addresses ($100000/1).

- 14th December 2003: David Haywood fixed the ROM loading in Quiz Rouka Ni Tattenasai and Bonanza Bros, so that they both work more or less perfectly now.

- 0.77u3: Olivier Galibert fixed Bonanza Bros - Game now playable. Removed button 3/4 and 3rd coin slot. Added dipswitches 'Coin A/B', 'Demo Sounds', 'Start Credit', 'Coin Chute', 'Monitor flip', 'Difficulty' and 'Initial lives'.

- 3rd December 2003: Olivier Galibert fixed the controls in HotRod and Bonanza Bros, and HotRod was made playable by the addition of a ROM mirror thanks to GreyRogue's findings.

- 0.74u2: Added Bonanza Bros (Sega 1990).

- 0.68: Olivier Galibert added Bonanza Bros (Testdriver).


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Bonanza Bros

Bonanza Bros. (Mega-Tech)

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Romset: 3592 kb / 7 files / 861.6 zip

MAME XML Output:

       <game name="bnzabrosj" sourcefile="segas24.c" cloneof="bnzabros" romof="bnzabros">
              <description>Bonanza Bros (Japan, Floppy DS3-5000-07b Based)</description>
              <rom name="epr-12187.ic2" merge="epr-12187.ic2" size="131072" crc="e83783f3" sha1="4b3b32df7de85aef9cd77c8a4ffc17e10466b638" region="maincpu" offset="0"/>
              <rom name="epr-12186.ic1" merge="epr-12186.ic1" size="131072" crc="ce76319d" sha1="0ede61f0700f9161285c768fa97636f0e42b96f8" region="maincpu" offset="1"/>
              <rom name="mpr-13188-h.2" merge="mpr-13188-h.2" size="524288" crc="d3802294" sha1="7608e71e8ef398ac24dbf851994253bca5ace625" region="romboard" offset="0"/>
              <rom name="mpr-13187-h.1" merge="mpr-13187-h.1" size="524288" crc="e3d8c5f7" sha1="5b1e8646debee2f2ef272ddd3320b0a17192fbbe" region="romboard" offset="1"/>
              <rom name="mpr-13190.4" merge="mpr-13190.4" size="262144" crc="0b4df388" sha1="340478bba82069ab745d6d8703e6801411fd2fc4" region="romboard" offset="100000"/>
              <rom name="mpr-13189.3" merge="mpr-13189.3" size="262144" crc="5ea5a2f3" sha1="514b5446303c50aeb1d6d10d0a3f210da2577e16" region="romboard" offset="100001"/>
              <rom name="ds3-5000-07b.img" size="1843200" crc="efa7f2a7" sha1="eb905bff88fa40324fb92b91ac8a5878648c26e5" region="floppy" offset="0"/>
              <chip type="cpu" tag="maincpu" name="68000" clock="10000000"/>
              <chip type="cpu" tag="sub" name="68000" clock="10000000"/>
              <chip type="audio" tag="lspeaker" name="Speaker"/>
              <chip type="audio" tag="rspeaker" name="Speaker"/>
              <chip type="audio" tag="ymsnd" name="YM2151" clock="4000000"/>
              <chip type="audio" tag="dac" name="DAC"/>
              <display tag="screen" type="raster" rotate="0" width="496" height="384" refresh="57.524160" pixclock="16000000" htotal="656" hbend="0" hbstart="496" vtotal="424" vbend="0" vbstart="384" />
              <sound channels="2"/>
              <input players="2" buttons="3" coins="4" service="yes">
                     <control type="joy" ways="8"/>
              <dipswitch name="Coin A" tag="COINAGE" mask="15">
                     <dipvalue name="4 Coins/1 Credit" value="7"/>
                     <dipvalue name="3 Coins/1 Credit" value="8"/>
                     <dipvalue name="2 Coins/1 Credit" value="9"/>
                     <dipvalue name="2 Coins/1 Credit, 5/3, 6/4" value="5"/>
                     <dipvalue name="2 Coins/1 Credit, 4/3" value="4"/>
                     <dipvalue name="1 Coin/1 Credit" value="15" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit, 5/6" value="3"/>
                     <dipvalue name="1 Coin/1 Credit, 4/5" value="2"/>
                     <dipvalue name="1 Coin/1 Credit, 2/3" value="1"/>
                     <dipvalue name="2 Coins/3 Credits" value="6"/>
                     <dipvalue name="1 Coin/2 Credits" value="14"/>
                     <dipvalue name="1 Coin/3 Credits" value="13"/>
                     <dipvalue name="1 Coin/4 Credits" value="12"/>
                     <dipvalue name="1 Coin/5 Credits" value="11"/>
                     <dipvalue name="1 Coin/6 Credits" value="10"/>
                     <dipvalue name="Free Play (if Coin B too) or 1/1" value="0"/>
              <dipswitch name="Coin B" tag="COINAGE" mask="240">
                     <dipvalue name="4 Coins/1 Credit" value="112"/>
                     <dipvalue name="3 Coins/1 Credit" value="128"/>
                     <dipvalue name="2 Coins/1 Credit" value="144"/>
                     <dipvalue name="2 Coins/1 Credit, 5/3, 6/4" value="80"/>
                     <dipvalue name="2 Coins/1 Credit, 4/3" value="64"/>
                     <dipvalue name="1 Coin/1 Credit" value="240" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit, 5/6" value="48"/>
                     <dipvalue name="1 Coin/1 Credit, 4/5" value="32"/>
                     <dipvalue name="1 Coin/1 Credit, 2/3" value="16"/>
                     <dipvalue name="2 Coins/3 Credits" value="96"/>
                     <dipvalue name="1 Coin/2 Credits" value="224"/>
                     <dipvalue name="1 Coin/3 Credits" value="208"/>
                     <dipvalue name="1 Coin/4 Credits" value="192"/>
                     <dipvalue name="1 Coin/5 Credits" value="176"/>
                     <dipvalue name="1 Coin/6 Credits" value="160"/>
                     <dipvalue name="Free Play (if Coin A too) or 1/1" value="0"/>
              <dipswitch name="Demo Sounds" tag="DSW" mask="1">
                     <dipvalue name="Off" value="1"/>
                     <dipvalue name="On" value="0" default="yes"/>
              <dipswitch name="Start Credit" tag="DSW" mask="2">
                     <dipvalue name="1" value="2" default="yes"/>
                     <dipvalue name="2" value="0"/>
              <dipswitch name="Coin Chute" tag="DSW" mask="4">
                     <dipvalue name="Common" value="4" default="yes"/>
                     <dipvalue name="Individual" value="0"/>
              <dipswitch name="Flip Screen" tag="DSW" mask="8">
                     <dipvalue name="Off" value="8" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Difficulty" tag="DSW" mask="48">
                     <dipvalue name="Easy" value="32"/>
                     <dipvalue name="Normal" value="48" default="yes"/>
                     <dipvalue name="Hard" value="16"/>
                     <dipvalue name="Hardest" value="0"/>
              <dipswitch name="Lives" tag="DSW" mask="192">
                     <dipvalue name="1" value="0"/>
                     <dipvalue name="2" value="64"/>
                     <dipvalue name="3" value="192" default="yes"/>
                     <dipvalue name="4" value="128"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="16384"/>

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