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HYF-82481Q
BETHEL ELECTRONICS INTERNATIONAL, INC.
HYF-82481Q
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Processor
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CX486S/80486SX/SL80486SX/CX486DX/UMCU5/80486DX/SL80486DX/ CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4
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Processor Speed
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25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
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Chip Set
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Unidentified
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Max. Onboard DRAM
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128MB
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Cache
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128/256/512/1024KB
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BIOS
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Award
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Dimensions
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250mm x 220mm
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I/O Options
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32-bit VESA local bus slots (3)
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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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Chassis fan power
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CN1
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Turbo switch
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JP9
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Speaker
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JP6
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Power LED & keylock
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JP10
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Reset switch
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JP7
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32-bit VESA local bus slots
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SL1 - SL3
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Turbo LED
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JP8
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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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CMOS memory normal operation
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JP3
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Open
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CMOS memory clear
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JP3
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Closed
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»
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Turbo switch enabled
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JP9
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Open
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Turbo switch disabled
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JP9
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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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Bank 2
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Bank 3
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1MB
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(1) 256K x 36
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NONE
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NONE
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NONE
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2MB
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(1) 256K x 36
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(1) 256K x 36
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NONE
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NONE
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2MB
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(1) 512K x 36
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NONE
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NONE
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NONE
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4MB
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(1) 256K x 36
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(1) 256K x 36
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(1) 512K x 36
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NONE
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4MB
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(1) 512K x 36
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(1) 512K x 36
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NONE
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NONE
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4MB
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(1) 1M x 36
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NONE
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NONE
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NONE
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5MB
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(1) 256K x 36
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(1) 1M x 36
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NONE
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NONE
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6MB
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(1) 256K x 36
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(1) 256K x 36
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(1) 1M x 36
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NONE
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6MB
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(1) 512K x 36
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(1) 1M x 36
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NONE
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NONE
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8MB
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(1) 256K x 36
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(1) 256K x 36
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(1) 512K x 36
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(1) 1M x 36
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8MB
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(1) 512K x 36
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(1) 512K x 36
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(1) 1M x 36
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NONE
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8MB
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(1) 1M x 36
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(1) 1M x 36
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NONE
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NONE
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10MB
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(1) 256K x 36
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(1) 256K x 36
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(1) 1M x 36
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(1) 1M x 36
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12MB
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(1) 512K x 36
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(1) 512K x 36
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(1) 1M x 36
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(1) 1M x 36
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12MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 1M x 36
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NONE
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16MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 1M x 36
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(1) 1M x 36
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16MB
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(1) 4M x 36
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NONE
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NONE
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NONE
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17MB
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(1) 256K x 36
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(1) 4M x 36
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NONE
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NONE
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18MB
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(1) 256K x 36
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(1) 256K x 36
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(1) 4M x 36
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NONE
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18MB
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(1) 512K x 36
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(1) 4M x 36
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NONE
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NONE
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20MB
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(1) 512K x 36
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(1) 512K x 36
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(1) 4M x 36
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NONE
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20MB
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(1) 1M x 36
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(1) 4M x 36
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NONE
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NONE
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24MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 4M x 36
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NONE
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32MB
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(1) 4M x 36
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(1) 4M x 36
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NONE
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NONE
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32MB
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(1) 8M x 36
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NONE
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NONE
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NONE
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36MB
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(1) 512K x 36
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(1) 512K x 36
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(1) 4M x 36
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(1) 4M x 36
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36MB
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(1) 1M x 36
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(1) 4M x 36
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(1) 4M x 36
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NONE
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36MB
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(1) 1M x 36
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(1) 8M x 36
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NONE
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NONE
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40MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 4M x 36
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(1) 4M x 36
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40MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 8M x 36
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NONE
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48MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 4M x 36
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NONE
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48MB
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(1) 4M x 36
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(1) 8M x 36
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NONE
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NONE
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64MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 4M x 36
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(1) 4M x 36
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64MB
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(1) 16M x 36
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NONE
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NONE
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NONE
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64MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 8M x 36
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NONE
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64MB
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(1) 8M x 36
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(1) 8M x 36
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NONE
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NONE
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DRAM CONFIGURATION (CON’T)
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Size
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Bank 0
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Bank 1
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Bank 2
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Bank 3
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65MB
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(1) 256K x 36
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(1) 16M x 36
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NONE
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NONE
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68MB
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(1) 1M x 36
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(1) 16M x 36
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NONE
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NONE
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68MB
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(1) 1M x 36
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(1) 8M x 36
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(1) 8M x 36
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NONE
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72MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 16M x 36
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NONE
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72MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 8M x 36
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(1) 8M x 36
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80MB
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(1) 4M x 36
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(1) 16M x 36
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NONE
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NONE
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80MB
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(1) 4M x 36
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(1) 8M x 36
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(1) 8M x 36
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NONE
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96MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 16M x 36
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NONE
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96MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 8M x 36
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(1) 8M x 36
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96MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 8M x 36
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NONE
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128MB
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(1) 16M x 36
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(1) 16M x 36
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NONE
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NONE
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128MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 8M x 36
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(1) 8M x 36
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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) 64K x 8
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NONE
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(1) 32K x 8
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1MB
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(4) 128K x 8
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(4) 128K x 8
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(1) 32K x 8
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CPU TYPE CONFIGURATION
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Type
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JP11
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JP12
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W3
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80486SX
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pins 2 & 3 closed
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pins 2 & 3 closed
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pins 1 & 2 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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pins 2 & 3 closed
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80486DX2 (3.3v)
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pins 1 & 2 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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80486DX2 (5v)
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pins 2 & 3 closed
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pins 2 & 3 closed
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pins 2 & 3 closed
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80486DX4 (3.3v)
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pins 1 & 2 closed
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pins 1 & 2 closed
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pins 2 & 3 closed
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80486DX4 (5v)
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pins 2 & 3 closed
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pins 2 & 3 closed
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pins 2 & 3 closed
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CPU SPEED CONFIGURATION
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Speed
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W1
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25MHz
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Open
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33MHz
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pins 1 & 2, 3 & 4 closed
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40MHz
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pins 3 & 4 closed
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50iMHz
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Open
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50MHz
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pins 1 & 2 closed
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66iMHz
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pins 1 & 2, 3 & 4 closed
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75iMHz
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Open
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100iMHz
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pins 1 & 2, 3 & 4 closed
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