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MS-4145
ACHME COMPUTER, INC.
MS-4145
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Processor
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80486SX/SL80486SX/AM486DX/(SL)AM486DX/80486DX/ SL80486DX/CX486DX2/IBM486DX2/SGS486DX2/TI486DX2/ AM486DX2/ODP486DX2/80486DX2/SL80486DX2/SL80486DX4/ P24D/P24T/CX5X86/(SL)AM X5
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Processor Speed
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25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)/133(internal)/160(internal)MHz
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Chip Set
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ALI
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Video Chip Set
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None
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Maximum Onboard Memory
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64MB
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Maximum Video Memory
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None
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Cache
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128/256/512KB
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BIOS
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Award
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Dimensions
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220mm x 220mm
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I/O Options
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32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2)
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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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Serial port 1
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CN1
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Green PC LED
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JG1
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Serial port 2
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CN2
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Power LED & keylock
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JFP/pins 1 - 5
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Floppy drive interface
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CN3
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Speaker
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JFP/pins 7 - 10
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Parallel port
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CN4
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Turbo LED
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JFP/pins 12 & 13
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IDE interface 2
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CN5
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Turbo switch
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JFP/pins 15 - 17
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IDE interface 1
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CN6
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Reset switch
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JFP/pins 19 & 20
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Chassis fan power
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FAN
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IDE interface LED
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JFP/pins 21 & 22
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External battery
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JBAT
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32-bit PCI slots
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PC1 - PC3
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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»
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Battery type select internal
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JBAT
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Pins 2 & 3 closed
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Battery type select external
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JBAT
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Closed
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»
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Parallel port address select 378
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JIRQ
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Pins 1 & 2 closed
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Parallel port address select 278
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JIRQ
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Pins 2 & 3 closed
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»
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Factory configured - do not alter
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JS3
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Unidentified
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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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4MB
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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) 1M 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) 2M x 36
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None
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None
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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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12MB
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(1) 1M x 36
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(1) 2M x 36
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None
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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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16MB
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(1) 2M x 36
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(1) 2M 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) 2M x 36
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(1) 1M x 36
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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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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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24MB
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(1) 4M x 36
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(1) 2M 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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32MB
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(1) 8M x 36
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None
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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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40MB
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(1) 2M x 36
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(1) 8M x 36
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None
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40MB
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(1) 4M x 36
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(1) 2M 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) 8M x 36
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(1) 1M x 36
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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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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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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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64MB
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(1) 4M x 36
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(1) 8M x 36
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(1) 4M 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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128KB
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(4) 32K x 8
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None
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(1) 8K/16K/32K x 8
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256KB (A)
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(4) 32K x 8
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(4) 32K x 8
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(1) 8K/16K/32K x 8
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256KB (B)
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(2) 64K x 32
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None
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(1) 8K/16K/32K x 8
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Note: Board also accepts 512KB cache. The chip sizes and jumper settings are unidentified.
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CACHE JUMPER CONFIGURATION
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Size
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JS1
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JS2
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JS4
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128KB
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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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256KB (A)
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Pins 2 & 3 closed
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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256KB (B)
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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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CPU SPEED SELECTION
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Speed
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JK1
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JK2
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25MHz
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Open
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Pins 1 & 2 closed
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33MHz
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Pins 1 & 2, 3 & 4 closed
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Pins 1 & 2 closed
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40MHz
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Pins 1 & 2 closed
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Pins 2 & 3, 4 & 5 closed
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50iMHz
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Open
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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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Pins 1 & 2 closed
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75iMHz
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Open
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Pins 1 & 2 closed
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80iMHz
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Pins 1 & 2 closed
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Pins 2 & 3, 4 & 5 closed
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100iMHz
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Pins 1 & 2, 3 & 4 closed
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Pins 1 & 2 closed
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120iMHz
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Pins 1 & 2 closed
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Pins 2 & 3, 4 & 5 closed
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133iMHz
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Pins 1 & 2, 3 & 4 closed
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Pins 1 & 2 closed
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160iMHz
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Pins 1 & 2 closed
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Pins 2 & 3, 4 & 5 closed
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CPU TYPE SELECTION
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Type
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JC1
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JC2
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JC3
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JC4
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JC5
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80486SX
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Open
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Open
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Open
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1 & 2
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2 & 3
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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
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2 & 3
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AM486DX
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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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1 & 2
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(SL)AM486DX
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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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1 & 2
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80486DX
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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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1 & 2
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SL80486DX
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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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1 & 2
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CX486DX2
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Open
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Closed
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Open
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2 & 3
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1 & 2
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IBM486DX2
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Open
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Closed
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Open
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2 & 3
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1 & 2
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SGS486DX2
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Open
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Closed
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Open
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2 & 3
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1 & 2
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TI486DX2
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Open
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Closed
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Open
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2 & 3
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1 & 2
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AM486DX2
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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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1 & 2
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ODP486DX2
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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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1 & 2
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80486DX2
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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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1 & 2
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SL80486DX2
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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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1 & 2
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SL80486DX4
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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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1 & 2
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P24D
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1 & 2, 3 & 4
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Open
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Open
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2 & 3
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1 & 2
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P24T
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1 & 2, 3 & 4
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Open
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Open
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2 & 3
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1 & 2
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CX5X86
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1 & 2, 3 & 4
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Open
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Open
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2 & 3
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1 & 2
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(SL)AM X5
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1 & 2, 3 & 4
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Open
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Open
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2 & 3
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1 & 2
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Note: Pins designated should be in the closed position.
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CPU TYPE SELECTION
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Type
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R1
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R2
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R2
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80486SX
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Pins 1 - 10 closed
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Not installed
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Not installed
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SL80486SX
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Pins 3 - 13 closed
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Not installed
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Not installed
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AM486DX
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Pins 1 - 10 closed
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Not installed
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Not installed
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(SL)AM486DX
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Pins 1 - 10 closed
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Not installed
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Not installed
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80486DX
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Pins 1 - 10 closed
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Not installed
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Not installed
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SL80486DX
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Pins 3 - 13 closed
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Not installed
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Not installed
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CX486DX2
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Installed
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Not installed
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Not installed
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IBM486DX2
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Installed
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Not installed
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Not installed
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SGS486DX2
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Installed
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Not installed
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Not installed
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TI486DX2
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Installed
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Not installed
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Not installed
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AM486DX2
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Pins 1 - 10 closed
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Not installed
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Not installed
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ODP486DX2
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Pins 3 - 13 closed
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Not installed
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Not installed
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80486DX2
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Pins 1 - 10 closed
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Not installed
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Not installed
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SL80486DX2
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Pins 3 - 13 closed
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Not installed
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Not installed
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SL80486DX4
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Pins 3 - 13 closed
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Not installed
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Not installed
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P24D
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Pins 5 - 14 closed
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Not installed
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Not installed
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P24T
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Pins 5 - 14 closed
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Not installed
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Not installed
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CX5X86
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Pins 3 - 13 closed
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Not installed
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Not installed
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(SL)AM X5
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Pins 5 - 14 closed
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Not installed
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Not installed
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CPU VOLTAGE SELECTION
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Voltage
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JP1
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JV1
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3v
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Open
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Open
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4v
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Closed
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Open
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5v
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Open
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Pins 1 & 2, 3 & 4, 5 & 6 closed
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DMA CHANNEL SELECTION
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Channel
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JP3
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JP4
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1
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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3
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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