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MB1433FA
UNIDENTIFIED
MB1433FA
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Processor
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80486SX/80487SX/80486DX/80486DX2
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Processor Speed
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25/33/40/50(internal)/50/66(internal)MHz
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Chip Set
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Unidentified
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Max. Onboard DRAM
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32MB
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Cache
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32/64/128/256KB
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BIOS
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AMI
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Dimensions
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254mm x 220mm
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I/O Options
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None
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NPU Options
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4167
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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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Reset switch
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J4
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Speaker
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J2
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Turbo switch
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J5
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Turbo LED
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J3
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External battery
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JP17
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USER CONFIGURABLE SETTINGS
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Function
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Jumper
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Position
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»
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Keyboard BIOS pin size select 23
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JP3
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pins 1 & 3 closed
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Keyboard BIOS pin size select 30
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JP3
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pins 2 & 4 closed
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»
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Monitor type select monochrome
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JP4
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Open
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Monitor type select color
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JP4
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Closed
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»
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Chip type select 146818
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JP7
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Open
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Chip type select Dallas
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JP7
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Closed
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»
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CMOS memory normal operation
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JP11
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pins 2 & 4 closed
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CMOS memory clear
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JP11
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pins 1 & 3 closed
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»
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Fuse enabled
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JPE
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Open
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Fuse disabled
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JPE
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Closed
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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1MB
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(4) 256K x 9
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NONE
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2MB
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(4) 256K x 9
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(4) 256K x 9
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4MB
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(4) 1M x 9
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NONE
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5MB
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(4) 256K x 9
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(4) 1M x 9
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8MB
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(4) 1M x 9
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(4) 1M x 9
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16MB
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(4) 4M x 9
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NONE
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20MB
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(4) 1M x 9
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(4) 4M x 9
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32MB
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(4) 4M x 9
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(4) 4M x 9
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CACHE CONFIGURATION
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Size
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Bank 0
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Bank 1
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TAG
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32KB
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(4) 8K x 8
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NONE
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(1) 8K x 8
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64KB
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(4) 8K x 8
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(4) 8K x 8
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(1) 8K x 8
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128KB
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(4) 32K x 8
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NONE
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(1) 8K x 8
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256KB
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(4) 32K x 8
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(4) 32K x 8
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(1) 32K x 8
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CACHE JUMPER CONFIGURATION
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Size
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jp2
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jp13
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jp16
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jp18
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jp20
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32KB
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1 & 8, 2 & 7, 3 & 6, 4 & 5
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1 & 4
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1 & 4
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Open
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Open
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64KB
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1 & 8, 2 & 7, 4 & 5
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2 & 3
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1 & 4
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1 & 4
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Open
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128KB
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1 & 8, 2 & 7, 3 & 6
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1 & 4
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1 & 4
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1 & 4, 2 & 3
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1 & 8, 2 & 7
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256KB
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1 & 8, 2 & 7
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2 & 3
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1 & 4, 2 & 3
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1 & 4, 2 & 3
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3 & 6, 4 & 5
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Note: Pins designated should be in the closed position.
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CPU TYPE CONFIGURATION
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Type
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JP10
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80486SX
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pins 3 & 10 closed
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80487SX
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pins 1 & 12, 2 & 11, 5 & 8 closed
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80486DX
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pins 1 & 12, 2 & 11, 3 & 10 closed
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80486DX2
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pins 1 & 12, 2 & 11, 3 & 10 closed
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