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GA-486SA
GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486SA
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Processor
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80486SX/80487SX/80486DX/ODP486SX/80486DX2
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Processor Speed
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16/20/25/33/50(internal)/50/66(internal)MHz
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Chip Set
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OPTI
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Max. Onboard DRAM
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128MB
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Cache
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64/128/256/512KB
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BIOS
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AMI
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Dimensions
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330mm x 218mm
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I/O Options
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32-bit local bus card slots (2)
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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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Turbo switch
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J4
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Reset
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J2
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Turbo LED
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J5
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Speaker
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J3
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32-bit local bus cards (2)
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S1 & S2
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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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CPU type select 80486DX
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J6
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pins 1 & 2 closed
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CPU type select 80486SX
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J6
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pins 2 & 3 closed
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Monitor type select color
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J14
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Closed
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Monitor type select monochrome
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J14
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Open
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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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16MB
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(4) 4M x 9
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NONE
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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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64MB
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(4) 16M x 9
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NONE
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128MB
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(4) 16M x 9
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(4) 16M 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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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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512KB
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(4) 128K x 8
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NONE
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(1) 32K x 8
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CACHE JUMPER CONFIGURATION
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Size
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J8
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J9
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J10
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J11
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64KB
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Open
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Open
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Open
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Open
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128KB
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Open
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Closed
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Open
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pins 1 & 2 closed
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256KB
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Open
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Closed
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Closed
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pins 2 & 3 closed
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512KB
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Closed
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Closed
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Closed
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pins 1 & 2 closed
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