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386 MOTHERBOARD
UNIDENTIFIED
386 MOTHERBOARD
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Processor
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80386SX
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Processor Speed
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16/25MHz
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Chip Set
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C & T
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Max. Onboard DRAM
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8MB
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Cache
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None
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BIOS
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AMI
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Dimensions
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254mm x 218mm
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I/O Options
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32-bit external memory cards (2)
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NPU Options
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80287/80387SX/3167 (location of the 80287 is unidentified)
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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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External battery
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CN1
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Reset switch
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J19
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Turbo switch
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J16
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Turbo LED
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J22
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Power LED & keylock
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J17
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32-bit system memory cards
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SL1 & SL2
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Speaker
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J18
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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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Factory configured - do not alter
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CN2
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N/A
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80287 not installed
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JP1
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Open
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80287 installed
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JP1
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Closed
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Monitor type select color
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JP3
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pins 1 & 2 closed
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Monitor type select monochrome
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JP3
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pins 2 & 3 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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8MB
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(4) 1M x 9
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(4) 1M x 9
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NPU TYPE CONFIGURATION (80387/WEITEK ONLY)
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Setting
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JP11
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JP12
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NPU not installed
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Open
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Open
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NPU installed
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Closed
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Closed
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MISCELLANEOUS TECHNICAL NOTE
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Note: The location of pin 1 is unidentified.
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