Major Havoc (rev 3)

Atari · 1983 · vector Horizontal · 2P · dial/only_buttons · mhavoc

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Display

Type: vector Horizontal

Refresh: 50 Hz

Processors

MOS Technology 6502 @ 2.5 MHz

MOS Technology 6502 @ 1.25 MHz

4x Atari C012294 POKEY @ 1.25 MHz

Audio

Atari C012294 POKEY @ 1.25 MHz

Channels: 1

Controls

Players: 2

Coin slots: 2

dial, 2 buttons

only_buttons, 2 buttons

Components (from manual)

7915 Regulator · Q1 · Voltage regulator

7815 Regulator · Q2 · Voltage regulator

MC1495LS Op Amp · U1, U2 · Integrated circuit

TL084 Op Amp · U3 · Quad operational amplifier

7915 Regulator · Q1 · Type-7915 Regulator Integrated Circuit

7815 Regulator · Q2 · Type-7815 Regulator Integrated Circuit

TL084 Op Amp · U1 · Type-TL084 Operational Amplifier Integrated Circuit

MC14951S Op Amp · U2 · Type-MC14951S Integrated Circuit

MC14951S Op Amp · U3 · Type-MC14951S Integrated Circuit

1N4002 Diode · Q102 · Diode to be removed from transistor Q102

1N4002 Diode · Q103 · Diode to be removed from transistor Q103

1N4002 Diode · Q705 · Diode to be added between emitter and collector of transistor Q705

1N4002 Diode · Q706 · Diode to be added between emitter and collector of transistor Q706

Q102 Transistor · Q102 · Transistor requiring IN4002 diode deletion

Q103 Transistor · Q103 · Transistor requiring IN4002 diode deletion

Q705 Transistor · Q705 · Transistor requiring IN4002 diode addition between emitter and collector

Q706 Transistor · Q706 · Transistor requiring IN4002 diode addition between emitter and collector

Alpha Microprocessor Microprocessor · Main game processor with timing chain, watchdog and reset

Gamma Microprocessor Microprocessor · Secondary processor with Alpha-Gamma communication port

Program ROM Memory · Game program storage

Program RAM Memory · Game program RAM

Decoder Logic · Address/data decoding

Vector Generator Graphics · Vector graphics generation with memory, OP code and intensity latches

Vector Generator Data Shifters Graphics · Vector data processing

Vector Generator Address Controller Graphics · Vector addressing

Vector Generator State Machine Graphics · Vector state control

Vector Generator Oscillator Graphics · Vector timing generation

Vector Generator Timing Chain Graphics · Vector timing control

Vector Flag, Center Flag, Halt Flag, Normalization Flag Graphics · Vector control flags

LM386 Audio Amplifier · Audio output amplifier on Regulator/Audio II PCB

Alpha Processor CPU · Multiple locations · Main game processor

Gamma Processor CPU · Multiple locations · Secondary processor

Checksum Error Detection · Various · ROM integrity checking

PCBs (from manual)

Conversion PCB A042442-01
Major Havoc conversion board

Conversion PCB A042392-21
Major Havoc Conversion printed-circuit board

Coupler PCB Assembly A035220-04
Encoder wheel interface PCB

Coupler PCB Assembly A035220-05
Corrected part number for encoder wheel coupler PCB

Coupler PCB A035220-01
PCB assembly for encoder wheel interface

Coupler PCB A035220-03
Encoder-wheel control interface PCB

Deflection PCB
Controls P600 and P700 points

Deflection PCB
Version 4 PCB requiring modification

Wells-Gardner Deflection PCB
Version 1 deflection board requiring diode modifications

Amplifone Deflection PCB TM-194
Deflection board requiring IN756A diode changes

Amplifone Deflection PCB TM-239
Deflection board requiring IN756A diode changes

Regulator/Audio II PCB 035435-02
Power regulation and audio processing

Color XY Power Supply 037394-01
Monitor power supply

Game Interface PCB
Coin door, utility panel, fluorescent light wiring

Memory Map Alpha Microprocessor PCB
Alpha processor memory mapping

Memory Map Gamma Microprocessor PCB
Gamma processor memory mapping

Game PCB Schematics 041347-01
Main game logic PCBs, sheets 4B-10A

Alpha Microprocessor 041347-01
Main game processor board

Gamma Microprocessor 041347-01
Secondary processor board

Regulator/Audio II PCB 035455-02
Power regulation and audio processing

Color X-Y Power Supply 037594-01
Power supply for vector monitor

Coin Door Wiring A037542-01
Coin door interface

Utility Panel Wiring A059254-01
Control panel wiring

Fluorescent Light Wiring 035853-01
Cabinet lighting

Coupler PCB A035220-02
Interface coupling board

Game PCB SW2
Main game board with DIP switch settings

Game PCB SW1
Secondary game board with additional DIP switches

Coupler PCB AO33320-01
Control panel interface board

Fuses (from manual)

F1 4A 250V · Slow-blow

F2 1A 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
SW1:8	Adaptive Difficulty	OFF OffON On ✱	On
SW1:7	Demo Sounds	OFF OffON On ✱	On
SW1:5, SW1:6	Bonus Life	SW1:5 SW1:6OFF OFF 50000ON ON 100000 ✱OFF ON 200000ON OFF None	100000
SW1:3, SW1:4	Difficulty	SW1:3 SW1:4OFF ON EasyON ON Medium ✱OFF OFF HardON OFF Demo	Medium
SW1:1, SW1:2	Lives	SW1:1 SW1:2ON ON 3 (2 in Free Play) ✱OFF OFF 4 (3 in Free Play)ON OFF 5 (4 in Free Play)OFF ON 6 (5 in Free Play)	3 (2 in Free Play)
SW2:7, SW2:8	Coinage	SW2:7 SW2:8ON OFF 2 Coins/1 CreditOFF OFF 1 Coin/1 Credit ✱ON ON 1 Coin/2 CreditsOFF ON Free Play	1 Coin/1 Credit
SW2:5, SW2:6	Right Coin Mechanism	SW2:5 SW2:6OFF OFF x1 ✱ON OFF x4OFF ON x5ON ON x6	x1
SW2:4	Left Coin Mechanism	OFF x1 ✱ON x2	x1
SW2:1, SW2:2, SW2:3	Bonus Credits	SW2:1 SW2:2 SW2:3ON ON OFF 2 each 4ON OFF ON 1 each 3OFF ON OFF 1 each 4OFF OFF ON 1 each 5OFF OFF OFF None ✱	None

Available Manuals

Supplement - Major_Havoc_CO-252-03_1st_Conversion_Board_Supplement_to_TM-268_Conv_Instr_SD_BW_G.pdf Change Order - Major_Havoc_CO-252-04_1st_Printing.pdf Supplement - Major_Havoc_CO-252-05_1st_Encoder_Documentation_Supplement_to_TM-268_Conv_Instr_SD_BW_G.pdf Parts List - Major_Havoc_CO-252-06_1st_Encoder_Parts_List_Correction_Supplement_to_CO-252-05_Encoder_Doc.pdf Supplement - Major_Havoc_CO-252-07_1st_Encoder_Assembly_Correction_Supplement_to_CO-252-05_Encoder_Doc.pdf Change Order - Major_Havoc_CO-267-01_1st_Printing.pdf Change Order - Major_Havoc_CO-267-02_1st_Printing.pdf Supplement - Major_Havoc_CO-268-01_1st_Add-on_Diode_Correction_Supplement_to_TM-268_Conv_Instr_SD_BW_G.pdf Schematic Package - Major_Havoc_SP-252_1st_Printing.pdf Schematic Package - Major_Havoc_SP-252_2nd_Printing.pdf Schematic Sheet - Major_Havoc_ST-252_2nd_Back_Door_Sheet_Conversion_to_SD_BW_G_8p5iwx22ih.pdf Technical Manual - Major_Havoc_TM-252_1st_Printing.pdf Technical Manual - Major_Havoc_TM-267_1st_Printing_Conversion_for_Tempest.pdf Technical Manual - Major_Havoc_TM-268_1st_Printing_ Conversion_for_SD-BW-GRAV.pdf Document - Major_Havoc_042579-01A_Control_Panel_Wiring_Space_Duel_Black_Widow_Gravitar_11x17.pdf Manual - Major_Havoc_TG-252_1st_Printing.pdf