Centipede (revision 4)
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Display
Type: raster Vertical
Resolution: 256 x 240
Refresh: 60 Hz
Processors
MOS Technology 6502 @ 1.512 MHz
Atari C012294 POKEY @ 1.512 MHz
Audio
Atari C012294 POKEY @ 1.512 MHz
Channels: 1
Controls
Players: 1
Coin slots: 2
joy, 8-way, 1 button
trackball
Components (from manual)
C2 MPU socket pins 37-39 · MPU chip removed for testing
ROM0 D1-20 · Program ROM
ROM1 E1-20 · Program ROM
ROM2 F/H1-20 · Program ROM
ROM3 J1-20 · Program ROM
3C97 K3-10, J3-3 · Address decoder ROM
51U7 J2-9 · ROM3 decoder
2960 J2-10 · ROM2 decoder
5P33 J2-11 · ROM1 decoder
1H32 J2-12 · ROM0 decoder
A8H2 H3-11 · Chip select
C5P1 H3-10 · Chip select
U550 H3-9 · Address decoder
9UC6 H3-7 · Address decoder
0UA5 H3-6 · Address decoder
F733 H3-5 · POKEY chip
4231 H3-4 · System control
3580 H3-3 · SWRD control
4P50 H3-2 · PF control
A00H H3-1 · RAM0
F6HP J3-11 · Address decoder
F97A C5-8 · EA READ control
N099 C4-6 · EA READ control
U08U C4-5 · EA CONTROL
HF7A C4-4 · EA ADDR
0294 E3-3 · IN0
5554 K3-12 · Interrupt
40A4 E3-6 · INT
4P5C E3-8 · PFRAMRD
6502 CPU · Main processor
2114 RAM · 1K x 4 Static RAM
2114 Memory · 1K x 4 static RAM
2101 Memory · 256 x 4 static RAM
74LS Logic · Various 74LS series logic ICs
74153 Multiplexer · Dual 4-line to 1-line data selector
2716 ROM · 2K x 8 EPROM
74161 Counter · Synchronous 4-bit counter
74LS139 Logic · Dual 2-line to 4-line decoder
74LS244 Logic · Octal buffer/line driver
74LS373 Logic · Octal transparent latch
C010444 POKEY · Audio and I/O controller
2716 ROM · Program ROM
6116 RAM · System RAM
74LS161 Counter · Coin counter circuit
74LS244 Buffer · Data buffer
74LS374 Latch · Data latch
74LS138 Decoder · Address decoder
74LS00 Logic · NAND gates
74LS04 Logic · Inverters
74LS08 Logic · AND gates
74LS32 Logic · OR gates
2114 RAM · 1K x 4 static RAM used in playfield memory
2516 ROM · Picture data ROM
74LS163 Logic · 4-bit synchronous counter
74LS157 Logic · Quad 2-input multiplexer
74LS138 Logic · 3-to-8 line decoder
74LS174 Logic · Hex D-type flip-flop
74LS32 Logic · Quad 2-input OR gate
74LS00 Logic · Quad 2-input NAND gate
74LS04 Logic · Hex inverter
6502 Processor · Main CPU
6502 CPU · Main microprocessor
2114 RAM · 1K x 4 static RAM
2716 ROM · 2K EPROM
7400 Logic · TTL logic gates
2114 Memory · 1K x 4 RAM
2716 Memory · 2K x 8 EPROM
74LS138 Logic · 3-to-8 decoder
74LS157 Logic · Quad 2-to-1 multiplexer
74LS244 Logic · Octal buffer
74LS245 Logic · Octal bus transceiver
74LS257 Logic · Quad 2-to-1 multiplexer
74LS161 Logic · 4-bit counter
74LS373 Logic · Octal latch
74LS00 Logic · Quad NAND gate
74LS32 Logic · Quad OR gate
6502 MPU · Main processor
2114 RAM · Static RAM
74LS Logic · TTL logic family ICs
136001-208 or -308 ROM · D1 · ROM0 data
ROM1 ROM · E1 · ROM1 data
ROM2 ROM · F/H1 · ROM2 data
ROM3 ROM · J1 · ROM3 data
6502 CPU · C2 · MPU chip C2
ROM3 ROM · J2-9 · ROM3 chip
ROM2 ROM · J2-10 · ROM2 chip
ROM1 ROM · J2-11 · ROM1 chip
ROM0 ROM · J2-12 · ROM0 chip
POKEY Logic · H3-5 · POKEY sound chip
SWRD Logic · H3-3 · Sword logic
PF Logic · H3-2 · Playfield logic
RAM0 Logic · H3-1 · RAM chip
EA READ Logic · C4-6 · EA Read control
EA CONTROL Logic · C4-5 · EA Control
EA ADDR Logic · C4-4 · EA Address
IN0 Logic · E3-3 · Input 0
INT Logic · E3-6 · Interrupt logic
PFRAMRD Logic · E3-8 · Playfield frame read
2114 RAM · Static RAM used in playfield memory
74LS157 Multiplexer · Data selector/multiplexer
74LS244 Buffer · Octal buffer/line driver
74LS273 Latch · Octal D-type flip-flop
74LS163 Counter · Synchronous 4-bit counter
74LS138 Decoder · 3-to-8 line decoder
74LS00 Gate · Quad 2-input NAND gate
74LS02 Gate · Quad 2-input NOR gate
74LS08 Gate · Quad 2-input AND gate
74LS74 Flip-flop · Dual D-type flip-flop
6116 RAM · Static RAM used in high score memory circuit
74LS373 Logic · Octal latch used in various circuits
74LS02 Logic · Quad 2-input NOR gate
74LS08 Logic · Quad 2-input AND gate
4066 Analog · Quad bilateral switch used in audio circuitry
LM339 Comparator · Quad comparator used in joystick/input circuits
2114 RAM · 1K x 4 bit static RAM used in playfield memory
2716 ROM · 2K x 8 bit EPROM
2732 ROM · 4K x 8 bit EPROM
74LS157 Multiplexer · Quad 2-input multiplexer
74LS138 Address Decoder · 3-to-8 line decoder
74LS244 Buffer · Octal buffer/driver
74LS374 Latch · Octal D-type flip-flop
2716 ROM · EPROM for picture data storage
74LS10 Logic · Triple 3-input NAND gate
74LS20 Logic · Dual 4-input NAND gate
74LS74 Logic · Dual D-type flip-flop
74LS86 Logic · Quad 2-input XOR gate
74LS139 Logic · Dual 2-to-4 line decoder
74LS153 Logic · Dual 4-to-1 multiplexer
74LS194 Logic · 4-bit bidirectional shift register
74LS253 Logic · Dual 4-to-1 multiplexer
74LS273 Logic · Octal D-type flip-flop
Mini-Trak Ball Ball Interface · Trackball input processing
TL082 Audio Amplifier · Dual operational amplifier for audio processing
6116 RAM · Static RAM used in playfield memory
74LS153 Logic · Dual 4-input multiplexer
PCBs (from manual)
Main PCB A-F Revisions
Earlier board revisions requiring modification
Earlier board revisions requiring modification
Game PCB DP-182-01
Main game board
Main game board
MPU
Main processor unit with socket for C2 chip
Main processor unit with socket for C2 chip
International Power Supply 037669-01
Main power supply board
Main power supply board
Regulator Audio II PCB 035435-02
Audio regulation circuit board
Audio regulation circuit board
American-Made Coin Door 036635-01
Coin door control circuit
Coin door control circuit
British-Made Coin Door 037050-01
Coin door control circuit
Coin door control circuit
Centipede Wiring Diagram 037432-01
Main game wiring harness
Main game wiring harness
Main PCB 037241-01
Main game board with CPU, RAM, ROM and address decoding
Main game board with CPU, RAM, ROM and address decoding
Playfield Address Selector
Controls access to playfield memory
Controls access to playfield memory
Playfield Memory
RAM for playfield data storage
RAM for playfield data storage
Playfield Multiplexer
Multiplexes playfield data
Multiplexes playfield data
Picture Data ROM Circuitry
Character and picture data ROM
Character and picture data ROM
Motion Object Circuitry (Vertical)
Vertical motion object processing
Vertical motion object processing
Motion Object Circuitry (Horizontal)
Horizontal motion object processing
Horizontal motion object processing
Main PCB 037421-01
Main game board
Main game board
Power Supply 037669-01
Main power supply board
Main power supply board
Regulator Audio II PCB 035435-02
Audio regulator board
Audio regulator board
American-Made Coin Door 036835-01
Coin door control board
Coin door control board
British-Made Coin Door 037059-01
Coin door control board
Coin door control board
CAT Box
CAT Box Preliminary Set-up
CAT Box Preliminary Set-up
Synchronizer
Synchronizer circuit board
Synchronizer circuit board
Microprocessor
Main processor board
Main processor board
Address Decoder
Address decoding circuit
Address decoding circuit
RAM
Memory circuit
Memory circuit
ROM
Program memory circuit
Program memory circuit
Playfield Address Selector
Manages playfield memory addressing
Manages playfield memory addressing
Playfield Memory
Stores playfield graphics data
Stores playfield graphics data
Playfield Multiplexer
Controls playfield data selection
Controls playfield data selection
Picture Data ROM Circuitry
Contains picture/sprite ROM data
Contains picture/sprite ROM data
Motion Object Circuitry (Vertical)
Handles vertical motion object processing
Handles vertical motion object processing
Motion Object Circuitry (Horizontal)
Handles horizontal motion object processing
Handles horizontal motion object processing
Main PCB
Contains all game logic and I/O processing
Contains all game logic and I/O processing
Regulator/Audio II PCB 035435-02
Voltage regulator and audio amplifier board
Voltage regulator and audio amplifier board
Centipede Main PCB 037432-01
Main game logic board
Main game logic board
CAT Box
Test connector for Atari CAT box system
Test connector for Atari CAT box system
Main PCB
Contains microprocessor, ROM, RAM, and support circuitry
Contains microprocessor, ROM, RAM, and support circuitry
Playfield Address Selector
Address selection circuitry for playfield memory
Address selection circuitry for playfield memory
Playfield Memory
Playfield RAM storage
Playfield RAM storage
Playfield Multiplexer
Data multiplexing for playfield display
Data multiplexing for playfield display
Picture Data ROM Circuitry
Character and sprite ROM data handling
Character and sprite ROM data handling
Main PCB 037241-01
Main game board
Main game board
Audio PCB
Audio output circuitry
Audio output circuitry
Video Output PCB
Video output circuitry
Video output circuitry
Power Supply 037669-01
Power supply schematic
Power supply schematic
Regulator Audio II PCB 035435-02
Audio regulator circuit board
Audio regulator circuit board
American-Made Coin Door 036935-01
Coin door schematic
Coin door schematic
British-Made Coin Door 037050-01
British coin door schematic
British coin door schematic
Synchronizer
Sync and timing circuits
Sync and timing circuits
Microprocessor
CPU and main logic board
CPU and main logic board
Address Decoder
Memory address decoding
Memory address decoding
RAM
System memory
System memory
ROM
Program storage
Program storage
Centipede Playfield RAM
Playfield memory circuit
Playfield memory circuit
Playfield Address Selector
Address selection for playfield memory
Address selection for playfield memory
Playfield Multiplexer
Data multiplexing circuit
Data multiplexing circuit
Picture Data ROM Circuitry
ROM circuit for picture data
ROM circuit for picture data
Regulator/Audio II PCB
Power regulation and audio circuit board
Power regulation and audio circuit board
Centipede Game PCB
Main game logic board
Main game logic board
Regulator/Audio II PCB
Power regulation and audio processing board
Power regulation and audio processing board
Centipede Game PCB
Main game board assembly
Main game board assembly
Power Supply Assembly
Power supply board
Power supply board
Fluorescent Light and Speaker Assembly
Audio and lighting control
Audio and lighting control
Regulator/Audio II PCB Assembly
Audio regulation board
Audio regulation board
Centipede Game PCB
Main game board
Main game board
Regulator/Audio II PCB
Power regulation and audio board
Power regulation and audio board
Centipede Game PCB
Main game board with ROM versions -002 and -003
Main game board with ROM versions -002 and -003
Game PCB
Main game board with MPU socket
Main game board with MPU socket
Centipede Game PCB
Main Centipede game board
Main Centipede game board
Regulator Audio II PCB 035435-02
Audio regulation and amplification board
Audio regulation and amplification board
Vertical-Mounted Coin Door 037542-01
Coin door assembly schematic
Coin door assembly schematic
CAT Box
Test connector for Atari CAT Box preliminary setup
Test connector for Atari CAT Box preliminary setup
Playfield Multiplexer
Multiplexes playfield memory outputs and data from different sources
Multiplexes playfield memory outputs and data from different sources
Picture Data ROM Circuitry
Picture data ROM circuitry contains picture source data for character generation
Picture data ROM circuitry contains picture source data for character generation
Motion Object Circuitry (Vertical)
Generates vertical movement of motion objects
Generates vertical movement of motion objects
Motion Object Circuitry (Horizontal)
Generates horizontal movement of motion objects
Generates horizontal movement of motion objects
Main PCB 037421-01
Centipede main board
Centipede main board
Picture Data ROM Circuitry
Picture data ROM circuit
Picture data ROM circuit
Motion Object Circuitry (Vertical)
Vertical component of motion object circuits
Vertical component of motion object circuits
Motion Object Circuitry (Horizontal)
Horizontal component of motion object circuits
Horizontal component of motion object circuits
Sheet 2, Side B
Main board schematic containing multiple circuit sections
Main board schematic containing multiple circuit sections
Power Supply
Main power supply unit
Main power supply unit
Regulator Audio II PCB 035435-02
Audio regulation and processing board
Audio regulation and processing board
Dual Coin Mech 036597-01
Coin mechanism control board
Coin mechanism control board
CAT Box
Test connector for Atari CAT Box
Test connector for Atari CAT Box
Synchronizer
Video synchronization circuit
Video synchronization circuit
ROM
Program memory
Program memory
Playfield RAM
Playfield memory storage
Playfield memory storage
Playfield Multiplexer
Data multiplexing for playfield
Data multiplexing for playfield
Picture Data ROM Circuitry
Picture/graphics data storage
Picture/graphics data storage
Joystick Circuit
Joystick input processing
Joystick input processing
Player Input Circuit
Player control input handling
Player control input handling
Option Input Circuit
DIP switch and option input processing
DIP switch and option input processing
Audio Output Circuit
Sound generation and amplification
Sound generation and amplification
Video Output Circuit
Video signal generation
Video signal generation
Coin Counter Output Circuit
Coin mechanism control
Coin mechanism control
Mini-Trak Ball Circuit
Trackball interface
Trackball interface
High Score Memory Circuit
Score memory management
Score memory management
Regulator Audio II PCB 035435-02
Audio regulation and amplification circuit
Audio regulation and amplification circuit
Dual Coin Mech Schematic 036597-01
Coin mechanism interface board
Coin mechanism interface board
Power Supply 036597-01
Main power supply board
Main power supply board
CAT Box
Cable and Test connection box
Cable and Test connection box
Centipede Playfield RAM
Playfield memory storage
Playfield memory storage
Playfield Multiplexer
Data multiplexing for playfield operations
Data multiplexing for playfield operations
Picture Data ROM Circuitry
ROM storage for picture/graphics data
ROM storage for picture/graphics data
Main PCB 037241-01
Centipede main board
Centipede main board
Centipede Game PCB
Main game circuit board
Main game circuit board
Monitor
Display circuit board
Display circuit board
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 |
|---|---|---|---|
| SW1:1, SW1:2 | Language | SW1:1 SW1:2ON ON English ✱OFF ON GermanON OFF FrenchOFF OFF Spanish | English |
| SW1:3, SW1:4 | Lives | SW1:3 SW1:4ON ON 2OFF ON 3 ✱ON OFF 4OFF OFF 5 | 3 |
| SW1:5, SW1:6 | Bonus Life | SW1:5 SW1:6ON ON 10000OFF ON 12000 ✱ON OFF 15000OFF OFF 20000 | 12000 |
| SW1:7 | Difficulty | OFF Easy ✱ON Hard | Easy |
| SW1:8 | Credit Minimum | ON 1 ✱OFF 2 | 1 |
| SW2:1, SW2:2 | Coinage | SW2:1 SW2:2OFF OFF 2 Coins/1 CreditON OFF 1 Coin/1 Credit ✱OFF ON 1 Coin/2 CreditsON ON Free Play | 1 Coin/1 Credit |
| SW2:3, SW2:4, SW2:5 | Game Time | SW2:3 SW2:4 SW2:5ON ON ON Untimed ✱OFF ON ON 1 MinuteON OFF ON 2 MinutesOFF OFF ON 3 MinutesON ON OFF 4 MinutesOFF ON OFF 5 MinutesON OFF OFF 6 MinutesOFF OFF OFF 7 Minutes | Untimed |
| SW2:6, SW2:7, SW2:8 | Bonus Coins | SW2:6 SW2:7 SW2:8ON ON ON None ✱OFF ON ON 3 credits/2 coinsON OFF ON 5 credits/4 coinsOFF OFF ON 6 credits/4 coinsON ON OFF 6 credits/5 coinsOFF ON OFF 4 credits/3 coins | None |