Defender (Red label)
Also known as: T.T Defender
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Display
Type: raster Horizontal
Resolution: 292 x 240
Refresh: 60.1 Hz
Processors
Motorola MC6809E @ 1 MHz
Motorola MC6808 @ 3.58 MHz
Audio
MC1408 DAC
Channels: 1
Controls
Players: 1
Coin slots: 3
joy, vertical2-way, 5 buttons
Components (from manual)
6809 CPU · 1C · Main processor
5101 256 x 4 CMOS RAM RAM · 1T · Static RAM
6821 PIA · 1I · Peripheral Interface Adapter
74LS133 13-Input NAND NAND · Logic gate
8T97 Hex TS Buffer Buffer · Tri-state buffer
74LS367 Hex TS Buffer Buffer · Tri-state buffer
7641 512 x 8 PROM PROM · Programmable ROM
7404 Hex Inverter Inverter · Logic inverter
4071 CMOS Quad 2-Input OR OR Gate · Logic OR gate
7489 16 x 4 RAM RAM · Random access memory
6809E Microprocessor · Enhanced microprocessor
74LS139 Dual 2 to 4 Line Decoder Decoder · Address decoder
7408 Quad AND AND · Logic AND gate
74LS257 Quad 2-Input Data Multiplexer Multiplexer · Data selector
9316 4-Bit Bin. Counter Counter · Binary counter
7411 Triple 3-Input AND AND · Logic AND gate
7400 Quad 2-Input NAND NAND · Logic NAND gate
74LS04 Hex Inverter Inverter · Logic inverter
74LS393 Dual 4-Bit Bin. Counter Counter · Binary counter
7402 Quad 2-Input NOR NOR · Logic NOR gate
74LS245 Octal Bus Transceiver Transceiver · Bus driver
7427 Triple 3-Input POS-NOR NOR · Logic NOR gate
74165 8-Bit Shift Register Register · Shift register
7474 Dual D-Type Latch Latch · Data latch
74153 Dual 4 to 1 Data Multiplexer Multiplexer · Data selector
7421 Dual 4-Input AND AND · Logic AND gate
7420 Dual 4-Input NAND NAND · Logic NAND gate
74LS107 Dual J-K Flip-Flop Flip-Flop · J-K flip-flop
7486 Quad 2-Input EX-OR EX-OR · Exclusive OR gate
7432 Quad 2-Input OR OR · Logic OR gate
74LS374 Octal D-Type Flip-Flop Flip-Flop · D-type flip-flop
4116 16K x 1 Dynamic RAM RAM · Dynamic RAM
7410 Triple 3-Input NAND NAND · Logic NAND gate
6809E Microprocessor CPU · 2I · Main processor
74LS189 or 74LS289 16x4 RAM RAM · 1C, 2C · Static RAM
8T97 Hex, TS Buffer Or Buffer · 1F, 2F, 2K, 3D · Tri-state buffer
74LS367 Hex Bus Driver Bus Driver · 1K · Bus driver
74LS245 Octal Bus Transceiver Transceiver · 1N · Bus transceiver
74LS374 Octal D-Type Flip-Flop Flip-Flop · 1N, 3M, 4M · Data latch
74165 8-Bit Shift Register Shift Register · 1O, 2D, 3O, 4O, 1P, 2P, 3P, 4P · Serial shift register
4116 (450 ns Access 16K x 1 Dynamic RAM) Dynamic RAM · 1R,1S,1T,1U,1W,1X,1Y,1Z,2R,2S,2T,2U,2W,2X,2Y,2Z · Main system RAM
74LS257 Quad Data Multiplexer Multiplexer · 2E, 2M · Data multiplexer
7486 Quad 2-Input EX-OR PROM · 3A, 5R · Exclusive OR gate
7411 Triple 3-Input AND AND Gate · 3B, 6O · Logic gate
7641 512 x 8 PROM PROM · 3K · Program ROM
74153 Dual 4 to 1 Data Invert Inverter · 3G, 3I, 4F, 4H · Data inverter
7400 Quad 2-Input NAND NAND Gate · 4B · Logic gate
7421 Dual 4-Input AND AND Gate · 4C · Logic gate
7474 Dual-D Type Flip-Flop Flip-Flop · 4E, 6R, 7J, 7L · D-type flip-flop
7408 Quad AND Quad AND · J · Logic gate
74LS139 Dual 2 to 4 Line Decoder Decoder · 4K · Address decoder
7432 Quad 2-Input OR OR Gate · 4R, 5P · Logic gate
74LS74 Dual D-Type Flip-Flop Flip-Flop · 4S, 5S · D-type flip-flop
74LS393 Dual 4-Bit Bin. Counter Counter · 5A · Binary counter
7404 Hex Inverter Inverter · 5G, 6M · Logic inverter
74160 Decade Counter Counter · 5O · Decade counter
9316 4-Bit Bin. Counter Counter · 5E, 5F, 5H, 5J · Binary counter
74LS133 13-Input NAND NAND Gate · 5N · Multi-input NAND
7402 Quad 2-Input NOR NOR Gate · 5N · Logic gate
4071 CMOS Quad 2-Input NOR NOR Gate · 6H · CMOS logic gate
7410 Triple 3-Input NAND NAND Gate · 6J, 6P · Logic gate
7427 Triple 3-Inp. Pos-NOR Gate Gate · 6K · Positive NOR gate
74LS04 Hex. Inverter Inverter · 7P · Logic inverter
74LS107 Dual J-K Flip-Flop Flip-Flop · 7R · J-K flip-flop
MPU CPU · Component 2I · Microprocessor - main system processor
Video RAM Banks Memory · Located in upper right-hand portion of CPU board, stores line-by-line screen presentation data
Color RAM Memory · Combines Video RAM data with MPU color selections for monitor output
Video RAM Address Multiplexer Multiplexer · Multiplexes addresses on 4-to-1 basis to scan Video RAM banks
Color RAM Address Multiplexer Multiplexer · Multiplexes shift register serial output and MPU address bus input
Video Shift Register Multiplexer Multiplexer · 2M · Selects between two sets of Video Shift Registers
Video Address Generator Generator · 5E, 5F, 5H, 5J · Provides addresses to scan Video RAM banks and drives sync circuits
Clock Generator Generator · Provides system timing signals
Monitor Sync Generator Generator · 3A · Generates vertical sync pulses at pin 8, horizontal pulses at pin 11
Video Shift Registers Register · 1M, 3M, 4M · Two sets: 10,20,30,40 for Player 1; 1P,2P,3P,4P for Player 2
Vertical Count Buffer Buffer · Part of Video Address Generator system
Reset Circuit Circuit · Pin 37 · Controls synchronization during power up and fluctuations
Watchdog Circuit Circuit · Monitors MPU reset input
Video RAM Control Circuit Circuit · 6P, 5P, 4R · Controls Video RAM timing
Video RAM Timing Circuit Circuit · 4S, 5S, 6P, 4J · Timing control for Video RAM operations
Color RAM Driver Circuit Circuit · 1C, 2C · Drives Color RAM output
Blanking Circuit Circuit · 4B pin 8 · Controls screen blanking
Color RAM Address Multiplexer Multiplexer · 2E · Addresses Color RAM
E and Q Generator Logic · Clock generation circuits
Q4 Transistor · Blanking signal transistor with base resistor R23
MPU CPU · Main processor unit
IC1 Regulator · Heart of +5V regulated circuit, output at pin 10, reference voltage at pin 5 (4.75-5.25V DC)
I.C.2 Regulator · Associated with +12V regulated supply, output approximately +6.7V DC
Q2 Regulator · Regulates bridge output for minus 5 volt supply, output at test point 5
Microcomputer Central Processing Unit CPU · Performs the brain function of the system, controls the rest of the system according to program
PCBs (from manual)
CPU/Video Board R8570
Main processor and video generation board
Main processor and video generation board
Interface Board C8573
Interface board with jumper configurations
Interface board with jumper configurations
ROM Board D8572
ROM storage board
ROM storage board
Power Supply Board D8359
Power supply regulation board
Power supply regulation board
Power Panel D8373
Power distribution panel
Power distribution panel
Sound Board D8121
Audio generation board
Audio generation board
Sound Board D8224
Secondary audio board
Secondary audio board
D8356 CPU/Video Board 5770-09471-00
CPU/Video Board Assembly Bare P.C. Board
CPU/Video Board Assembly Bare P.C. Board
CPU/Video Board R8570
Main processor and video generation board - must be equipped with two decoder ROMs
Main processor and video generation board - must be equipped with two decoder ROMs
Interface Board C8573
Interface board - jumper W1 must be removed and jumper W2 must be connected
Interface board - jumper W1 must be removed and jumper W2 must be connected
ROM Board D8572
ROM board - must be equipped with red-labeled ROMs
ROM board - must be equipped with red-labeled ROMs
Power Supply Board D8359
Power supply board
Power supply board
Power Panel D8608
Power panel assembly
Power panel assembly
Sound Board D8224
Sound board
Sound board
R8570 CPU/Video Board R-8570
CPU Board Assembly (Cocktail)
CPU Board Assembly (Cocktail)
CPU Board
Contains microprocessor and system control circuits
Contains microprocessor and system control circuits
Power Supply Board
Provides all system voltages with three main sections
Provides all system voltages with three main sections
Interface Board
Works in conjunction with power supply
Works in conjunction with power supply
CPU Video Board
Receives +5V, -5V, +12V regulated and +12V unregulated
Receives +5V, -5V, +12V regulated and +12V unregulated
ROM Board
Receives +5V regulated
Receives +5V regulated
Sound Board
Receives +5V regulated, +12V and -12V unregulated
Receives +5V regulated, +12V and -12V unregulated
ROM Board
Contains main game programs, self-test diagnostics, and Input/Output ports
Contains main game programs, self-test diagnostics, and Input/Output ports
CPU/Video Board
Single decoder ROM, batteries at upper right. Upright games only
Single decoder ROM, batteries at upper right. Upright games only
ROM Board
14 and 16-pin ICs mounted parallel to ROM ICs. Upright or table games
14 and 16-pin ICs mounted parallel to ROM ICs. Upright or table games
Interface Board
Total of four chips plus resistor pack. Upright or table games
Total of four chips plus resistor pack. Upright or table games
Power Supply Board
Provides necessary voltages for proper game operation. Upright or table games
Provides necessary voltages for proper game operation. Upright or table games
CPU/Video Board
Contains microcomputer Central Processing Unit (CPU), Video Memory, Video Control circuitry. Two decoder ROMs, batteries at lower right
Contains microcomputer Central Processing Unit (CPU), Video Memory, Video Control circuitry. Two decoder ROMs, batteries at lower right
ROM Board
14 and 16-pin ICs mounted perpendicular to ROM ICs. Provides ROM storage for programs and data base
14 and 16-pin ICs mounted perpendicular to ROM ICs. Provides ROM storage for programs and data base
Interface Board
Total of six chips plus resistor pack
Total of six chips plus resistor pack
Power Supply Board
Provides necessary voltages for proper game operation
Provides necessary voltages for proper game operation
Fuses (from manual)
B1 unknown · unknown
B2 unknown · unknown
B3 unknown · unknown