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headon2: MAME ROM Information.


Head On 2 (c) 1979 Sega.

Head On 2 is a 2-D maze racing game. You control your car through the maze to pick up the dots while at the same time avoiding the car, or cars, that are constantly trying to ram you. Successfully get through one maze and many more await you. This is good practice for freeway driving in the big city.


Main CPU : Z80 (@ 1.93356 Mhz)

Screen orientation : Horizontal

Video resolution : 256 x 224 pixels

Screen refresh : 60.00 Hz

Palette colors : 64

Players : 1

Control : 4-way joystick

Buttons : 1


Released during October 1979.

Head On 2 was another in a short line of arcade games made by the partnership of Sega and Gremlin. Although Gremlin eventually went out of business, Sega continued to produce arcade games. Other notable games produced by this partnership include "Deep Scan", "Astro Blaster", and "Frogger".

A bootleg was made by RZ Bologna under the name of "Car 2".


Dots : 5 pts X number of cars on field.

Diamonds : 25 pts X number of cars on field.


* Always be aware of where the Jam Car(s) is/are located. They can only make one lane change at a time but that lane change may be into your lane.

* The faster you go, the fewer lanes you can cross. At full acceleration, you will only be able to change one lane at a time. In the earlier levels, this will be fine since you will only be dealing with one car. In the multiple Jam Car levels, this can be a very bad thing. Decelerate (take your finger off the accelerate button) to go across multiple lanes.

* The Jam Car(s) always travel in a clockwise motion while you travel in a counterclockwise motion. Remember that so that you don't get confused when there are multiple cars in the maze. Also, the color of the Jam Car is red while yours is white.

* Don't try to get all the dots on one of the lanes. You need to anticipate where your next move is well before you enter the lane change area since you cannot change lanes at any other time. Sometimes, on the earlier levels, it is best to do a staggered type dot pickup where you do lane one, change to lane two, to lane three, lane four, lane five, then back to lane one. If you time it right, the Jam Car or Cars will still be in the maze.

* Don't let the speed of the Jam Car(s) throw you. Just plan to be out of your lane and in the lane change area before them. If both cars enter at the same time, you run a big risk of a collision.


1. Head On (1979)

2. Head On 2 (1979)


Game's rom.

Machine's picture.

MAME Info:

0.35b2 [Nicola Salmoria]


- 0.135u3: f205v and ANY added clone Head On 2 (Sidam bootleg).

- 17th November 2009: f205v dumped Head On 2 (Sidam bootleg 1979).

- 0.117u1: Couriersud added discrete sound to Head On and clones, Space Attack / Head On, Head On 2 and Invinco / Head On 2 in the VIC Dual driver. Added Discrete sound.

- 0.116u3: David Haywood added clone Car 2 (bootleg of Head On 2).

- 17th June 2007: f205v dumped Car 2 (bootleg of Head On 2) (Play Car Bologna).

- 0.113u3: Replaced timing proms (control and sequence) with only one prom (correct).

- 0.37b7: Added proms ($20, 40 - control and sequence). Removed Samples sound.

- 0.36b7: Added 'Demo Sounds' dipswitch.

- 0.36b5: Added prom ($0).

- 0.35b2: Nicola Salmoria added Head On 2 (Sega 1979).

- 7th September 1998: David Covell and Peter Fyfe dumped Head On 2 (Sega/Gremlin single C.V logic board).

LEVELS: 1 (endless)

Recommended Games (Racing):

Car Polo

Fire Truck



Head On

Head On (Irem)

Alpha Fighter / Head On

Space Attack / Head On

Head On 2

Invinco / Head On 2

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Space Chaser


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Mad Alien

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Namco Classic Collection Vol.2 (Rally X)

New Rally X



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Kamikaze Cabbie

Taxi Driver

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Pang Pang Car

Ringout 4x4

Romset: 9 kb / 10 files / 7.40 zip

MAME XML Output:

       <game name="headon2" sourcefile="vicdual.c">
              <description>Head On 2</description>
              <rom name="u27.bin" size="1024" crc="fa47d2fb" sha1="b3208f5bce228c453bdafbc9c1f2c8e1bd920d32" region="maincpu" offset="0"/>
              <rom name="u26.bin" size="1024" crc="61c47b15" sha1="47619bd51fcaf47dd72e940c474f310c9287f2f4" region="maincpu" offset="400"/>
              <rom name="u25.bin" size="1024" crc="bb16db92" sha1="f57dfbe52b0e545c7c889ac846dc7281d28f2698" region="maincpu" offset="800"/>
              <rom name="u24.bin" size="1024" crc="17a09f24" sha1="0cb40ec185f2ee3a26e943d84e8e2834d5f9d3ed" region="maincpu" offset="c00"/>
              <rom name="u23.bin" size="1024" crc="0024895e" sha1="60f81c383f1541555c26f7cf111a12a34f7f4f3e" region="maincpu" offset="1000"/>
              <rom name="u22.bin" size="1024" crc="f798304d" sha1="55526c6daead9b74a88e8bc0311155aa41a93210" region="maincpu" offset="1400"/>
              <rom name="u21.bin" size="1024" crc="4c19dd40" sha1="0bdfed47594c7aa5ff655b507350fc6a912b6855" region="maincpu" offset="1800"/>
              <rom name="u20.bin" size="1024" crc="25887ff2" sha1="67cfb5ac93902b4c603f02c876c021ff453e5f0e" region="maincpu" offset="1c00"/>
              <rom name="316-0138.u44" size="32" crc="67104ea9" sha1="26b6bd2a1973b83bb9af4e3385d8cb14cb3f62f2" region="proms" offset="0"/>
              <rom name="316-0206.u65" size="32" crc="9617d796" sha1="7cff2741866095ff42eadd8022bea349ec8d2f39" region="user1" offset="0"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="1933560"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="discrete" name="DISCRETE"/>
              <display tag="screen" type="raster" rotate="0" width="256" height="224" refresh="60.000000" pixclock="5156160" htotal="328" hbend="0" hbstart="256" vtotal="262" vbend="0" vbstart="224" />
              <sound channels="1"/>
              <input players="1" buttons="1" coins="1">
                     <control type="joy" ways="4"/>
              <dipswitch name="Lives" tag="IN1" mask="24">
                     <dipvalue name="4" value="24" default="yes"/>
                     <dipvalue name="5" value="16"/>
                     <dipvalue name="6" value="0"/>
              <dipswitch name="Demo Sounds" tag="IN2" mask="2">
                     <dipvalue name="Off" value="0"/>
                     <dipvalue name="On" value="2" default="yes"/>
              <driver status="imperfect" emulation="good" color="good" sound="imperfect" graphic="good" savestate="unsupported" palettesize="0"/>

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