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SIS 486-471 VL BUS, VLT MB
VISION TECHNOLOGIES
SIS 486-471 VL BUS, VLT MB
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Processor
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CX486S/80486SX/SL80486SX/CX486DX/AM486DX/80486DX/AM486DXL/ SL80486DX/CX486DX2/AM486DX2/AM486DXL2/80486DX2/SL80486DX2/ 80486DX4
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Processor Speed
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20/25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
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Chip Set
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SIS
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Max. Onboard DRAM
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128MB
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Cache
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64/128/256/512/1024KB
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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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32-bit VESA local bus slots (3), green PC connector
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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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J1
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Speaker
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J7
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Green PC connector (VGA)
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J2
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Power LED & keylock
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J8
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Reset switch
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J4
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Green PC connector
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JP29
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Turbo LED
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J5
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32-bit VESA local bus slots
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SL1 - SL3
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Turbo switch
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J6 pins 2 & 3
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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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JP20
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N/A
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Factory configured - do not alter
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JP21
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N/A
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»
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Factory configured - do not alter
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JP30
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Open
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»
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Factory configured - do not alter
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JP35
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N/A
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»
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CMOS memory normal operation
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JP38
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pins 1 & 2 closed
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CMOS memory clear
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JP38
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pins 2 & 3 closed
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»
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Monitor type select monochrome/EGA/VGA
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JP39
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Open
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Monitor type select CGA
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JP39
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Closed
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»
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RC pin for break switch enabled
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JP40
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pins 1 & 2 closed
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RC pin used for RC
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JP40
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pins 2 & 3 closed
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DRAM CONFIGURATION 1
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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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(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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8MB
|
(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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20MB
|
(4) 1M x 9
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(1) 4M 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) 8M x 9
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(1) 8M x 36
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128MB
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(4) 16M x 9
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(1) 16M x 36
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DRAM CONFIGURATION 2
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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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1MB
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(4) 256K x 9
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NONE
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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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NONE
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4MB
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(4) 1M x 9
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NONE
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NONE
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5MB
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(4) 256K x 9
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(1) 1M x 36
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NONE
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6MB
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(4) 256K x 9
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(1) 256K x 36
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(1) 1M 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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NONE
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12MB
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(4) 1M x 9
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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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(4) 4M x 9
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NONE
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NONE
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17MB
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(4) 256K x 9
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(1) 4M x 36
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NONE
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18MB
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(4) 256K x 9
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(1) 256K x 36
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(1) 4M x 36
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20MB
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(4) 1M x 9
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(1) 4M x 36
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NONE
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24MB
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(4) 1M x 9
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(1) 1M x 36
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(1) 4M 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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NONE
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34MB
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(4) 256K x 9
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(1) 256K x 36
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(1) 8M x 36
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36MB
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(4) 1M x 9
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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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(4) 1M x 9
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(1) 1M x 36
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(1) 8M x 36
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48MB
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(4) 4M x 9
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(1) 4M x 36
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(1) 4M x 36
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48MB
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(4) 4M x 9
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(1) 8M x 36
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NONE
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64MB
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(4) 4M x 9
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(1) 4M x 36
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(1) 8M x 36
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DRAM CONFIGURATION 2 (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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64MB
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(4) 16M x 9
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NONE
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NONE
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68MB
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(4) 1M x 9
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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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(4) 4M x 9
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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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(4) 16M x 9
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(1) 8M x 36
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NONE
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128MB
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(4) 16M x 9
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(1) 8M x 36
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(1) 8M x 36
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DRAM CONFIGURATION 3
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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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1MB
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NONE
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(1) 256K x 36
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NONE
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2MB
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NONE
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(1) 256K x 36
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(1) 256K x 36
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4MB
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NONE
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(1) 1M x 36
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NONE
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5MB
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NONE
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(1) 256K x 36
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(1) 1M x 36
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6MB
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(4) 1M x 9
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(1) 256K x 36
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(1) 256K x 36
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8MB
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NONE
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(1) 1M x 36
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(1) 1M x 36
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8MB
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NONE
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(1) 2M x 36
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NONE
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12MB
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(4) 1M x 9
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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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(4) 4M x 9
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NONE
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NONE
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16MB
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NONE
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(1) 4M x 36
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NONE
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17MB
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NONE
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(1) 256K x 36
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(1) 4M x 36
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18MB
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(4) 4M x 9
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(1) 256K x 36
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(1) 256K x 36
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20MB
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NONE
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(1) 1M x 36
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(1) 4M x 36
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24MB
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(4) 4M x 9
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(1) 1M x 36
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(1) 1M x 36
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32MB
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NONE
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(1) 4M x 36
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(1) 4M x 36
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32MB
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NONE
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(1) 8M x 36
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NONE
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36MB
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(4) 4M x 9
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(1) 1M x 36
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(1) 4M x 36
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36MB
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NONE
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(1) 1M x 36
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(1) 8M x 36
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48MB
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(4) 4M x 9
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(1) 4M x 36
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(1) 4M x 36
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48MB
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NONE
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(1) 4M x 36
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(1) 8M x 36
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64MB
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(4) 16M x 9
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NONE
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NONE
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72MB
|
(4) 16M x 9
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(1) 1M x 36
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(1) 1M x 36
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96MB
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(4) 16M x 9
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(1) 4M x 36
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(1) 4M x 36
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128MB
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(4) 16M x 9
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(1) 8M x 36
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(1) 8M x 36
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DRAM JUMPER CONFIGURATION
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Configuration
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JP36
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JP37
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1
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pins 1 & 2 closed
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Open
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2
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pins 1 & 2 closed
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pins 2 & 3 closed
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3
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pins 2 & 3 closed
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pins 1 & 2 closed
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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 or (1) 16K 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) 16K 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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(8) 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) 128K x 8
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Note: The location of the TAG is unidentified.
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CACHE JUMPER CONFIGURATION
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Size
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JP1
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JP2
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JP3
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JP25
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JP26
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JP27
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JP28
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64KB
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1 & 2
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2 & 3
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2 & 3, 4 & 5
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1 & 2
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1 & 2
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1 & 2
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Open
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128KB
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2 & 3
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1 & 2
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1 & 2, 3 & 4
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2 & 3
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1 & 2
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1 & 2
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Open
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256KB
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2 & 3
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2 & 3
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2 & 3, 4 & 5
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2 & 3
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Open
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Open
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Closed
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256KB
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2 & 3
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2 & 3
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2 & 3, 4 & 5
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2 & 3
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2 & 3
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1 & 2
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Open
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512KB
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2 & 3
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1 & 2
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1 & 2, 3 & 4
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2 & 3
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2 & 3
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2 & 3
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Open
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1MB
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2 & 3
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2 & 3
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2 & 3, 4 & 5
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2 & 3
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2 & 3
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2 & 3
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Open
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Note: Pins designated should be in the closed position.
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CPU TYPE CONFIGURATION
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Type
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JP4
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JP5
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JP6
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JP7
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JP8
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CX486SX
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Open
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Open
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Open
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2 & 3
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2 & 3
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80486SX
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Open
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Open
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Open
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3 & 4
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Open
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SL80486SX
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Open
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Open
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Open
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1 & 2, 3 & 4
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Open
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CX486DX
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Open
|
Open
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Open
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1 & 2, 3 & 4
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2 & 3
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80486DX
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Open
|
Open
|
Open
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1 & 2, 3 & 4
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Open
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SL80486DX
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Open
|
Open
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Open
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1 & 2, 3 & 4
|
Open
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CX486DX2-66
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Open
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Open
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Open
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1 & 2, 3 & 4
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2 & 3
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CX486DX2-80
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Open
|
Open
|
Open
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1 & 2, 3 & 4
|
2 & 3
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AM486DX2
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Open
|
Open
|
Open
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1 & 2, 3 & 4
|
Open
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AM486DXL2
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Open
|
Open
|
Open
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1 & 2, 3 & 4
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Open
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80486DX2
|
Open
|
Open
|
Open
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1 & 2, 3 & 4
|
Open
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SL80486DX2
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Open
|
Open
|
Open
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1 & 2, 3 & 4
|
Open
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80486DX4
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Open
|
Open
|
Open
|
1 & 2, 3 & 4
|
Open
|
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Note: Pins designated should be in the closed position.
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CPU TYPE CONFIGURATION (CON’T)
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Type
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JP9
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JP10
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JP11
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JP12
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JP13
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CX486SX
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2 & 3
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1 & 2
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2 & 3
|
Open
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1 & 2, 3 & 4
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|
80486SX
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2 & 3
|
1 & 2
|
Open
|
Open
|
Open
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SL80486SX
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2 & 3
|
1 & 2
|
Open
|
Open
|
2 & 3
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CX486DX
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2 & 3
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1 & 2
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2 & 3
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3 & 4
|
1 & 2, 3 & 4
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80486DX
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2 & 3
|
1 & 2
|
Open
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3 & 4
|
Open
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SL80486DX
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2 & 3
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1 & 2
|
Open
|
3 & 4
|
2 & 3
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CX486DX2-66
|
2 & 3
|
1 & 2
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2 & 3
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3 & 4
|
1 & 2, 3 & 4
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|
CX486DX2-80
|
2 & 3
|
1 & 2
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2 & 3
|
3 & 4
|
1 & 2, 3 & 4
|
|
AM486DX2
|
2 & 3
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1 & 2
|
Open
|
3 & 4
|
Open
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AM486DXL2
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2 & 3
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2 & 3
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3 & 4
|
1 & 2, 3 & 4
|
Open
|
|
80486DX2
|
2 & 3
|
1 & 2
|
Open
|
3 & 4
|
Open
|
|
SL80486DX2
|
2 & 3
|
1 & 2
|
Open
|
3 & 4
|
2 & 3
|
|
80486DX4
|
2 & 3
|
1 & 2
|
Open
|
3 & 4
|
2 & 3
|
|
Note: Pins designated should be in the closed position.
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CPU TYPE CONFIGURATION (CON’T)
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Type
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JP14
|
JP15
|
JP16
|
JP17
|
JP18
|
JP19
|
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CX486SX
|
2 & 3, 4 & 5
|
Open
|
Open
|
2 & 3
|
Closed
|
2 & 3
|
|
80486SX
|
Open
|
Open
|
Open
|
Open
|
Closed
|
2 & 3
|
|
SL80486SX
|
3 & 4
|
Open
|
1 & 2
|
4 & 5
|
Closed
|
2 & 3
|
|
CX486DX
|
2 & 3, 4 & 5
|
Open
|
Open
|
2 & 3
|
Closed
|
2 & 3
|
|
80486DX
|
Open
|
Open
|
Open
|
Open
|
Closed
|
2 & 3
|
|
SL80486DX
|
3 & 4
|
Open
|
1 & 2
|
4 & 5
|
Closed
|
2 & 3
|
|
CX486DX2-66
|
2 & 3, 4 & 5
|
Open
|
Open
|
2 & 3
|
Closed
|
2 & 3
|
|
CX486DX2-80
|
2 & 3
|
Open
|
Open
|
2 & 3
|
Closed
|
2 & 3
|
|
AM486DX2
|
Open
|
Open
|
Open
|
Open
|
Closed
|
2 & 3
|
|
AM486DXL2
|
Open
|
Open
|
Open
|
Open
|
Closed
|
2 & 3
|
|
80486DX2
|
Open
|
Open
|
Open
|
Open
|
Closed
|
2 & 3
|
|
SL80486DX2
|
3 & 4
|
Open
|
1 & 2
|
4 & 5
|
Closed
|
2 & 3
|
|
80486DX4
|
3 & 4
|
Open
|
1 & 2
|
4 & 5
|
Open
|
2 & 3
|
|
Note: Pins designated should be in the closed position.
|
|
CPU TYPE CONFIGURATION (CON’T)
|
|
Type
|
JP33
|
JP34
|
JP41
|
JP42
|
JP43
|
|
CX486SX
|
1 & 2
|
2 & 3
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
80486SX
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
SL80486SX
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
CX486DX
|
1 & 2
|
2 & 3
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
80486DX
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
SL80486DX
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
CX486DX2-66
|
1 & 2
|
2 & 3
|
1 & 2, 3 & 4
|
Closed
|
Open
|
|
CX486DX2-80
|
1 & 2
|
2 & 3
|
1 & 2, 3 & 4
|
Closed
|
Open
|
|
AM486DX2
|
2 & 3
|
1 & 2
|
1 & 2, 3 & 4
|
Open
|
Closed
|
|
AM486DXL2
|
1 & 2
|
2 & 3
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
80486DX2
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
SL80486DX2
|
2 & 3
|
1 & 2
|
3 & 4, 5 & 6
|
Open
|
Open
|
|
80486DX4
|
2 & 3
|
1 & 2
|
1 & 2, 3 & 4
|
Closed
|
Open
|
|
Note: Pins designated should be in the closed position.
|
|
CPU SPEED CONFIGURATION (AV9107)
|
|
Speed
|
JP22
|
JP23
|
JP24
|
|
20MHz
|
Closed
|
Open
|
Closed
|
|
25MHz
|
Closed
|
Closed
|
Open
|
|
33MHz
|
Open
|
Closed
|
Closed
|
|
40MHz
|
Closed
|
Open
|
Open
|
|
50iMHz
|
Closed
|
Closed
|
Open
|
|
50MHz
|
Open
|
Open
|
Closed
|
|
66iMHz
|
Open
|
Closed
|
Closed
|
|
75iMHz
|
Closed
|
Closed
|
Open
|
|
100iMHz
|
Open
|
Closed
|
Closed
|
|
CPU SPEED CONFIGURATION (MX8315)
|
|
Speed
|
JP22
|
JP23
|
JP24
|
|
20MHz
|
Open
|
Open
|
Open
|
|
25MHz
|
Open
|
Closed
|
Open
|
|
33MHz
|
Closed
|
Closed
|
Closed
|
|
40MHz
|
Open
|
Closed
|
Closed
|
|
50iMHz
|
Open
|
Closed
|
Open
|
|
50MHz
|
Closed
|
Open
|
Open
|
|
66iMHz
|
Closed
|
Closed
|
Closed
|
|
75iMHz
|
Open
|
Closed
|
Open
|
|
100iMHz
|
Closed
|
Closed
|
Closed
|
|
VESA WAIT STATE CONFIGURATION
|
|
Wait states
|
JP31
|
|
0 wait states
|
pins 1 & 2 closed
|
|
1 wait state
|
pins 2 & 3 closed
|
|
BUS SPEED CONFIGURATION
|
|
CPU speed
|
JP32
|
|
<= 33MHz
|
pins 1 & 2 closed
|
|
> 33MHz
|
pins 2 & 3 closed
|
|