Gravitar (version 3)
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Display
Type: vector Horizontal
Refresh: 61.52 Hz
Processors
MOS Technology 6502 @ 1.512 MHz
2x Atari C012294 POKEY @ 1.512 MHz
Audio
Atari C012294 POKEY @ 1.512 MHz
Atari C012294 POKEY @ 1.512 MHz
Discrete Sound
Channels: 1
Controls
Players: 1
Coin slots: 2
joy, 2-way, 3 buttons
Components (from manual)
P24 J24 Microprocessor · P24 · Main processor with timing diagram and address decoder
Read-Only Memory Memory · ROM chips for game program
Random-Access Memory Memory · RAM for game data
Vector Address Decoder Vector Controller · Controls vector display addressing
Custom Audio I/O Chips Audio · Sound generation and processing
136017-101 to -110 Integrated circuits · 10 integrated circuits included in electronics kit
PCBs (from manual)
Gravitar Main PCB 036585-01A-2
Main game logic board
Main game logic board
Color X-Y Power Supply PCB 037394-01B
Power supply board
Power supply board
Regulator/Audio II PCB 035435-02F
Audio and regulation board
Audio and regulation board
Color X-Y Display PCB 92-053
Display control board
Display control board
Gravitar Main PCB 036595-01
Main game board
Main game board
Color X-Y Power Supply PCB 037304-01
Power supply board
Power supply board
Regulator/Audio II PCB 035435-02
Voltage regulation and audio
Voltage regulation and audio
Coin-Door PCB 037542-01
Coin door interface
Coin door interface
Utility Panel PCB 038004-01
Utility panel controls
Utility panel controls
Fluorescent Light PCB 035833-01
Cabinet lighting control
Cabinet lighting control
Amplifone PCB 201014-XX
Audio amplification
Audio amplification
Amplifone Main Wiring 200000-01
Audio wiring harness
Audio wiring harness
Amplifone High-Voltage PCB 201012-XX
High voltage audio circuit
High voltage audio circuit
Game PCB
Main game circuit board
Main game circuit board
Regulator/Audio II PCB
Power regulation and audio processing board
Power regulation and audio processing board
Game PCB
Main game printed circuit board
Main game printed circuit board
Printed-circuit board 040002-01
PCB label
PCB label
Fuses (from manual)
F1 4A SB 250V · Slow-blow
F1 4A SB 250V · Slow-blow
DIP Switch Settings
Data from MAME. On later hardware, game settings are typically in the Test/Service Menu, not DIP switches. Learn more
| Switch | Setting | Options | Default |
|---|---|---|---|
| D4:7, D4:8 | Unused | D4:7 D4:8ON ON Off ✱OFF OFF On | Off |
| D4:5, D4:6 | Lives | D4:5 D4:6ON ON 3OFF ON 4 ✱ON OFF 5OFF OFF 6 | 4 |
| D4:4 | Difficulty | ON Easy ✱OFF Hard | Easy |
| D4:3 | Unused | ON Off ✱OFF On | Off |
| D4:1, D4:2 | Bonus Life | D4:1 D4:2ON ON 10000 ✱OFF ON 20000ON OFF 30000OFF OFF None | 10000 |
| B4:7, B4:8 | Coinage | B4:7 B4:8OFF ON 2 Coins/1 CreditON ON 1 Coin/1 Credit ✱OFF OFF 1 Coin/2 CreditsON OFF Free Play | 1 Coin/1 Credit |
| B4:5, B4:6 | Coin B | B4:5 B4:6ON ON *1 ✱OFF ON *4ON OFF *5OFF OFF *6 | *1 |
| B4:4 | Coin A | ON *1 ✱OFF *2 | *1 |
| B4:1, B4:2, B4:3 | Bonus Coins | B4:1 B4:2 B4:3ON ON OFF 1 each 5OFF OFF ON 2 each 4ON OFF ON 1 each 4OFF ON OFF 1 each 3OFF ON ON 1 each 2ON ON ON None ✱ | None |