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invho2: MAME ROM Information.


Head On 2 & Invinco (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.

Invinco is a game inspired by "Space Invaders" with some innovation on the aliens : One row blinks in and out of view, another row's aliens roll so as to make themselves harder or easier to hit, and a 3rd row of aliens each take (at least) 3 hits to kill. A 4th row has aliens that turn into bombs, blowing up everything around them to make your job somewhat easier.


Game ID : 271-286

Main CPU : Z80 (@ 1.93356 Mhz)

Sound Chips : Discrete circuitry

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 60.00 Hz

Palette colors : 64

Players : 2

Control : 4-way joystick

Buttons : 2


For Head On 2 :

Dots : 5 points X number of cars on field.

Diamonds : 25 points X number of cars on field.

For Invinco :

Bottom Blue Aliens : 100 points

White aliens : 200 points

Yellow aliens : 300 points

Light Blue Aliens : 400 points

Top Blue Aliens : 800 points

UFOs : 1,000 - 2,000 points


For Head On 2 :

* 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.

For Invinco :

* Time your shots when aiming at certain targets. The white aliens turn invisible on you, so try to hit them when they're visible on the screen. Also, there's a period of time that the top aliens are invulnerable to your shots while they change to another form; wait a second or so before shooting them again so you don't waste shots and time.


Game's rom.

MAME Info:

0.29 [Mike Coates]

Samples required (Invinco)


- Press ALT to select Invinco or Head On 2.


- Dipswitch settings from manual. gregf (ID 04719)


- 0.122u4: Zsolt Vasvari fixed game crashed after INSERT COIN (invho2_0122u3red). Re-added Samples sound for Invinco.

- 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 and removed Samples sound.

- 0.113u3: Added user1 rom ($0 - timing).

- 0.37b7: Added Invinco samples.

- 0.36b10: Removed Invinco samples.

- 0.36b7: Added Invinco samples.

- 0.29: Mike Coates added 'Invinco / Head On 2' (Sega 1979). Runs on the same hardware as Carnival. Runs on the same ahrdware as Carnival. Known issues: Dipswitches not verified.

- 3rd August 1997: Dumped Invinco / Head On 2.



- Move ship and fire at advancing targets.

- Game ends when all ships destroyed or targets advance to bottom row.

- Hit star to explore surrounding targets.

- Hit top row Invincos 3 times to destroy.

- Hit center of saucers for more points.


- Use lever to change lanes.

- Press button to go fast.

- Avoid crashes.

- Clear all lanes for bonus.

Recommended Games (Space Invaders):

Space Invaders

Space Invaders Part II

Return of the Invaders

Space Invaders DX

Super Space Invaders '91

Space Invaders '95 - Attack Of The Lunar Loonies

Space Invaders Anniversary

Space Invaders II

Space Stranger

Super Invader Attack


Invinco / Deep Scan

Invinco / Head On 2

Rolling Crash / Moon Base

Space Attack

Space Attack / Head On

Space Fever

Space Fever High Splitter

Space Fighter Mark II

Space King 2

Beam Invader

Rotary Fighter

IPM Invader

Shuttle Invader

Attack Ufo

Space Intruder

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

Rolling Crash / Moon Base

Space Chaser


Highway Chase (DECO Cassette)

Mad Alien

Rally X

Namco Classic Collection Vol.2 (Rally X)

New Rally X



Armored Car

Jump Bug

Route 16


Radical Radial

Van-Van Car

Kamikaze Cabbie

Taxi Driver

City Connection


Fast Lane

Counter Run


Crazy Taxi

Crazy Taxi High Roller

Emergency Call Ambulance

Pang Pang Car

Ringout 4x4

Romset: 17 kb / 18 files / 14.5 zip

MAME XML Output:

       <game name="invho2" sourcefile="vicdual.c" sampleof="invinco">
              <description>Invinco / Head On 2</description>
              <rom name="271b.u33" size="1024" crc="44356a73" sha1="6ff1050d84b6b7a006762c35e0b3d2befb0f90d6" region="maincpu" offset="0"/>
              <rom name="272b.u32" size="1024" crc="bd251265" sha1="134f081c62173fab80b46918e4a073cf5f72df77" region="maincpu" offset="400"/>
              <rom name="273b.u31" size="1024" crc="2fc80cd9" sha1="2790fb45233c8d6e74a56fcdfde1c468926d44d2" region="maincpu" offset="800"/>
              <rom name="274b.u30" size="1024" crc="4fac4210" sha1="9bb2fe888edab7e52a180d7f4d7fdab17392a736" region="maincpu" offset="c00"/>
              <rom name="275b.u29" size="1024" crc="85af508e" sha1="4b71c9583fe3b16a24f05d685d1edbd53ff81f81" region="maincpu" offset="1000"/>
              <rom name="276b.u28" size="1024" crc="e305843a" sha1="bb5113d3e0a4ca81e055da9c03755d0e6270d927" region="maincpu" offset="1400"/>
              <rom name="277b.u27" size="1024" crc="b6b4221e" sha1="8cfeff5ca7d29d973409df7f422428411462eab6" region="maincpu" offset="1800"/>
              <rom name="278b.u26" size="1024" crc="74d42250" sha1="023227d314ec91c9b508b7fd60f163414165c25b" region="maincpu" offset="1c00"/>
              <rom name="279b.u8" size="1024" crc="8d30a3e0" sha1="ac8cfca1b334d95e209bcfceeeeca31c03faecc8" region="maincpu" offset="2000"/>
              <rom name="280b.u7" size="1024" crc="b5ee60ec" sha1="dbc682b5770755fed8c04ef0f0311b2850228236" region="maincpu" offset="2400"/>
              <rom name="281b.u6" size="1024" crc="21a6d4f2" sha1="e8c8b263ffe53d5af50a561d038bfa96136767ad" region="maincpu" offset="2800"/>
              <rom name="282b.u5" size="1024" crc="07d54f8a" sha1="f99af42ec24938cdd19c0ff7ac2b9e9882dc3655" region="maincpu" offset="2c00"/>
              <rom name="283b.u4" size="1024" crc="bdbe7ec1" sha1="45e08c533acc538d88a0580535325b9ff1a60f2f" region="maincpu" offset="3000"/>
              <rom name="284b.u3" size="1024" crc="ae9e9f16" sha1="7f708ce49f34582d53abad0d811265dd28af899f" region="maincpu" offset="3400"/>
              <rom name="285b.u2" size="1024" crc="8dc3ec34" sha1="1f70027ad3b781244b672ee77225e32589c61e46" region="maincpu" offset="3800"/>
              <rom name="286b.u1" size="1024" crc="4bab9ba2" sha1="a74881acf222466deb9c9e35dff532af6b10a7fc" region="maincpu" offset="3c00"/>
              <rom name="316-0287.u49" size="32" crc="d4374b01" sha1="85ea0915f23571358e2e0c2b66b968e7b93f4bd6" region="proms" offset="0"/>
              <rom name="316-0206.u14" size="32" crc="9617d796" sha1="7cff2741866095ff42eadd8022bea349ec8d2f39" region="user1" offset="0"/>
              <sample name="saucer"/>
              <sample name="move1"/>
              <sample name="move2"/>
              <sample name="fire"/>
              <sample name="invhit"/>
              <sample name="shiphit"/>
              <sample name="move3"/>
              <sample name="move4"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="1933560"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="samples" name="Samples"/>
              <chip type="audio" tag="discrete" name="DISCRETE"/>
              <display tag="screen" type="raster" rotate="270" 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="2" coins="1">
                     <control type="joy" ways="4"/>
              <dipswitch name="Head On Lives (1/2)" tag="IN0" mask="4">
                     <dipvalue name="+0" value="4" default="yes"/>
                     <dipvalue name="+1" value="0"/>
              <dipswitch name="Unused" tag="IN0" mask="8">
                     <dipvalue name="Off" value="8"/>
                     <dipvalue name="On" value="0" default="yes"/>
              <dipswitch name="Head On Lives (2/2)" tag="IN1" mask="4">
                     <dipvalue name="+0" value="4"/>
                     <dipvalue name="+1" value="0" default="yes"/>
              <dipswitch name="Invinco Lives" tag="IN2" mask="4">
                     <dipvalue name="5" value="0" default="yes"/>
                     <dipvalue name="6" value="4"/>
              <dipswitch name="Unused" tag="IN3" mask="4">
                     <dipvalue name="Off" value="4"/>
                     <dipvalue name="On" value="0" default="yes"/>
              <driver status="imperfect" emulation="good" color="good" sound="imperfect" graphic="good" savestate="unsupported" palettesize="0"/>

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