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AR4
SILICON STAR INTERNATIONAL, INC.
AR4
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Processor
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80486SX/80487SX/80486DX/80486DX2
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Processor Speed
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40/50(internal)/60/66(internal)MHz
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Chip Set
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ALI
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Max. Onboard DRAM
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32MB
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Cache
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None
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BIOS
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Award
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Dimensions
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330mm x 218mm
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I/O Options
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None
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NPU Options
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None
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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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J4
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Turbo switch/LED
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J21
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Reset switch
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J19
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Keylock
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J22
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Speaker
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J20
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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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Monitor type select color
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JP1
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pins 2 & 3 closed
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Monitor type select monochrome
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JP1
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pins 1 & 2 closed
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Factory configured - do not alter
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JP2
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on
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CPU set at 80486SX (PQFP)
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JP7
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pins 1 & 2 closed
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CPU set at 80486SX (PGA)
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JP7
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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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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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CPU TYPE CONFIGURATION
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CPU Type
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JP4
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JP5
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80486SX
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Open
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pin 1 & 2 closed
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80487SX
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pins 1 & 2 closed
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pins 2 & 3 closed
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80486DX
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pins 2 & 3 closed
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pins 2 & 3 closed
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80486DX2
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pins 2 & 3 closed
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pins 2 & 3 closed
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AT BUS CLOCK CONFIGURATION
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Speed
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JP3
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JP6
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40MHz
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pins 2 & 3 closed
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pins 1 & 2 closed
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50MHz
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pins 1 & 2 closed
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pins 2 & 3 closed
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66MHz
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pins 1 & 2 closed
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pins 1 & 2 closed
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