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NEAT-286 (VER. 2)
UNIDENTIFIED
NEAT-286 (VER. 2)
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Processor
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80286
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Processor Speed
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16/20MHz
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Chip Set
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Neat
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Video Chip Set
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None
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Maximum Onboard Memory
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8MB
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Maximum Video Memory
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None
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Cache
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None
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BIOS
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Unidentified
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Dimensions
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330mm x 218mm
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I/O Options
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External memory card
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NPU Options
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80287
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Power LED & keylock
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J1
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Turbo switch
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JP7
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Speaker
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J2
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Turbo LED
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LF1
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External battery
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J3
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External memory card
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SL1
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Reset switch
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JP1
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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NPU asynchronous with CPU
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JP2
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Pins 1 & 2 closed
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NPU synchronous with CPU
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JP2
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Pins 2 & 3 closed
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BIOS type select 27128
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JP4
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Pins 1 & 2 closed
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BIOS type select 27256
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JP4
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Pins 2 & 3 closed
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CPU = CPU speed
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JP5
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Pins 1 & 2 closed
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CPU = NPU OSC speed
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JP5
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Pins 2 & 3 closed
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Monitor type select color
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JP6
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Closed
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Monitor type select monochrome
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JP6
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Open
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DRAM CONFIGURATION
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Size
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Bank A
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Bank B
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Bank C
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Bank D
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512KB
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(18) 41256
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None
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None
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None
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640KB
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(18) 41256
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(18) 4164
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None
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None
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1MB
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(18) 41256
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(18) 41256
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None
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None
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1.5MB
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(18) 41256
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(18) 41256
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(2) 256K x 9
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None
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1.64MB
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(18) 41256
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(18) 4164
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(2) 256K x 9
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(2) 256K x 9
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2MB
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(18) 411000
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None
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None
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None
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2MB
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(18) 41256
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(18) 41256
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(2) 256K x 9
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(2) 256K x 9
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3MB
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(18) 41256
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(18) 41256
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(2) 1M x 9
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None
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4MB
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(18) 411000
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(18) 411000
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None
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None
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4.64MB
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(18) 41256
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(18) 4164
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(2) 1M x 9
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(2) 1M x 9
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5MB
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(18) 41256
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(18) 41256
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(2) 1M x 9
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(2) 1M x 9
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6MB
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(18) 411000
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(18) 411000
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(2) 1M x 9
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None
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8MB
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(18) 411000
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(18) 411000
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(2) 1M x 9
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(2) 1M x 9
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DRAM JUMPER CONFIGURATION
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Setting
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JP3
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Banks C & D = Bank 0
Banks A & B = Bank 1
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1 & 2, 3 & 4, 6 & 7, 11 & 12, 13 & 14, 16 & 17, 18 & 19, 23 & 24, 28 & 29
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Banks A & B = Bank 0
Banks C & D = Bank 1
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2 & 3, 4 & 5, 7 & 8, 9 & 10, 12 & 13, 14 & 15, 17 & 18, 19 & 20, 22 & 23, 24 & 25, 27 & 28, 29 & 30
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Note: Pins designated should be in the closed position.
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