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386 AT3
ABIT COMPUTER CORPORATION
386 AT3
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Processor
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AMD386DX/80386DX/CX486DLC/Ti486DLC/Ti486SXL2
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Processor Speed
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33/40MHz
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Chip Set
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ALI
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Max. Onboard DRAM
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192MB
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Cache
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32/128KB
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BIOS
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AMI/AWARD
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Dimensions
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230mm x 218mm
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I/O Options
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Green PC feature connector
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NPU Options
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80387DX
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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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JP3
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Speaker
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JP11
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Turbo switch
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JP8
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Power LED & keylock
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JP12
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Turbo LED
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JP9
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Green PC feature connector
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JP15
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Reset switch
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JP10
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USER CONFIGURABLE SETTINGS
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Function
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Jumper/Switch
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Position
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»
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CMOS normal operation
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JP2
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pins 1 & 2
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CMOS memory clear
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JP2
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pins 2 & 3
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»
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CPU clock select 33MHz
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JP13
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pins 1 & 2, 3 & 4
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CPU clock select 40MHz
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JP13
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pins 5 & 6
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»
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128KB cache enabled
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JP16
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Closed
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32KB cache enabled
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JP16
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Open
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Note:Pins designated are in the closed position.
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1/2
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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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(1) 256K x 36
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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) 1M x 9
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(1) 256K x 36
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8MB
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(4) 1M x 9
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(1) 1M x 36
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16MB
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(4) 4M x 9
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NONE
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17MB
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(4) 4M x 9
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(1) 256K x 36
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20MB
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(4) 4M x 9
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(1) 1M x 36
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32MB
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(4) 4M x 9
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(1) 4M x 36
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64MB
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(4) 16M x 9
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NONE
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192MB
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(4) 16M x 9
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(1) 32M x 36
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CACHE CONFIGURATION
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Size
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Bank 0
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TAG
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32KB
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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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(1) 16K x 8
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CPU TYPE CONFIGURATION
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CPU Type
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JP1
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JP5
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80386DX
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pins 1 & 2 closed
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pins 1 & 2 closed
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80486DLC
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pins 2 & 3 closed
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pins 2 & 3 closed
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GREEN FEATURE CONNECTOR CONFIGURATION
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Pin
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Function
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1
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HSYNC
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2
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Ground
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3
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VSYNC
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4
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Ground
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5
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ENVEDIO
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6
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Ground
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7
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Monitor AC power
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8
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Ground
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