130 lines
2.4 KiB
Plaintext
130 lines
2.4 KiB
Plaintext
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Typed in by Jonathan Deitch (jdeitch@umiami.miami.edu)
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Williams Bubbles
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----------------
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This has four boards ... CPU/Video, ROM, Interface, Sound.
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CPU/Video
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=========
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IJ3 : Monitor Control
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7 : N/C
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6 : Horiz. Sync.
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5 : Vert. Sync.
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4 : Ground
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3 : Blue
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2 : Green
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1 : Red
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IJ2 : Memory Protect Interlock
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4 : N/C
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3 : N/C
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2 : Key
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1 : Memory Protect (Inverted)
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IJ1 : Power Input
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9 : - 5 V DC
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8 : + 12 V Unregulated
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7 : + 5 V DC
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6 : N/C
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5 : + 12 V DC
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4 : Key
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3 : Ground
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2 : Ground
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1 : N/C
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ROM Board
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=========
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2J4 : Sound Board Interface
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9 : N/C
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8 : CB2
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7 : PB4
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6 : PB5
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5 : PB2
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4 : PB3
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3 : PB0
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2 : PB1
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1 : N/C
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2J3 : Coin Door Switches
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10 : N/C
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9 : Key
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8 : N/C
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7 : Slam Switch
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6 : Center Coin Slot
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5 : Left Coin Slot
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4 : High Score
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3 : Right Coin Slot
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2 : Advance
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1 : Up = Auto, Down = Manual
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2J2 : Power Input
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6 : N/C
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5 : N/C
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4 : + 5 V DC
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3 : Key
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2 : N/C
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1 : Ground
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Interface Board
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===============
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3J2 : Not connected
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3J3 : Player Panel
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10 : Ground
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9 : N/C
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8 : N/C
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7 : N/C
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6 : Player 2 Start
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5 : Player 1 Start
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4 : Move Right
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3 : Move Left
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2 : Move Down
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1 : Move Up
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Sound Board
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===========
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10J3 : Sound Select (From ROM Board)
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9 : N/C
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8 : CB2
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7 : PB4
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6 : PB5
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5 : PB2
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4 : PB3
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3 : PB0
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2 : PB1
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1 : N/C
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10J4 : Volume Control
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4 : Shield
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3 : Key
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2 : Out
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1 : In
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10J2 : Speakers
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4 : GND
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3 : N/C
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2 : N/C
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1 : Audio Out : Note - the schematic does not say if this is
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amplified or not ...
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10J1 : Power Input
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9 : Key
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8 : 12 V DC Unregulated
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7 : N/C
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6 : N/C
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5 : GND
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4 : N/C
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3 : + 5 V DC
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2 : + 12 V DC
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1 : N/C
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