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GEMINI (REV. 2.0)
MICROMODULE SYSTEMS, INC.
GEMINI (REV. 2.0)
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Processor
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Pentium
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Processor Speed
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120/133/150MHz
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Chip Set
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Pico
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Video Chip Set
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None
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Maximum Onboard Memory
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256MB
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Maximum Video Memory
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None
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Cache
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256KB
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BIOS
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IBM/SystemSoft/Phoenix
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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 PCI 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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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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Test/monitor header
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JP1
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Unidentified
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Test/monitor header
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JP2
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Unidentified
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Test/monitor header
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JP3
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Unidentified
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Test/monitor header
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JP4
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Unidentified
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Test/monitor header
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JP5
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Unidentified
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Test/monitor header
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JP6
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Unidentified
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»
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PCI voltage select 5v
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JP7
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Pins 1 & 2 closed
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PCI voltage select 3v
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JP7
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Pins 2 & 3 closed
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Test/monitor header
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JP9
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Unidentified
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Test/monitor header
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JP13
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Unidentified
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»
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Factory configured - do not alter
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JP17
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Unidentified
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»
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Factory configured - do not alter
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JP18
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Unidentified
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»
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Speaker enabled
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JP21
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Closed
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Speaker disabled
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JP21
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Open
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»
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CMOS memory normal operation
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JP22
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Open
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CMOS memory clear
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JP22
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Closed
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»
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VPP power disabled
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JP23
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Open
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VPP power enabled
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JP23
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Closed
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»
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ROM write disabled
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JP24
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Open
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ROM write enabled
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JP24
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Closed
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»
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Data rate select pin 6
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JP27
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Open
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Data rate select pin 6 & 27
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JP27
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Closed
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Test/monitor header
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JP28
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Unidentified
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»
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H8 clock select PLL clock generator
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JP29
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Pins 1 & 2 closed
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H8 clock select crystal oscillator
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JP29
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Pins 2 & 3 closed
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Test/monitor header
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JP501
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Unidentified
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Test/monitor header
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JP502
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Unidentified
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Note: The location of the test/monitor headers is unidentified.
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SIMM CONFIGURATION
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Size
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Bank 0
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Bank 1
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8MB
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(2) 1M x 36
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None
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16MB
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(2) 2M x 36
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None
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16MB
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(2) 1M x 36
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(2) 1M x 36
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24MB
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(2) 2M x 36
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(2) 1M x 36
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32MB
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(2) 4M x 36
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None
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32MB
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(2) 2M x 36
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(2) 2M x 36
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40MB
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(2) 4M x 36
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(2) 1M x 36
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48MB
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(2) 4M x 36
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(2) 2M x 36
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64MB
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(2) 8M x 36
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None
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64MB
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(2) 4M x 36
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(2) 4M x 36
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72MB
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(2) 8M x 36
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(2) 1M x 36
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SIMM CONFIGURATION (CON’T)
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Size
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Bank 0
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Bank 1
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80MB
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(2) 8M x 36
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(2) 2M x 36
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96MB
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(2) 8M x 36
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(2) 4M x 36
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128MB
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(2) 8M x 36
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(2) 8M x 36
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128MB
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(2) 16M x 36
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None
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136MB
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(2) 16M x 36
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(2) 1M x 36
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144MB
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(2) 16M x 36
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(2) 2M x 36
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160MB
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(2) 16M x 36
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(2) 4M x 36
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192MB
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(2) 16M x 36
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(2) 8M x 36
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256MB
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(2) 16M x 36
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(2) 16M x 36
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SIMM MODULE POWER SELECTION
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Setting
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JP19
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| »
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Enabled
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Pins 1 & 2, 3 & 4, 5 & 6 closed
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Disabled
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Open
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SIMM POWER SUPPLY SELECTION
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Setting
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JP20
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Enabled
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Pins 1 & 2, 3 & 4, 5 & 6 closed
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Disabled
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Open
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CACHE CONFIGURATION
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Note: The location of the cache is unidentified.
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CPU SPEED SELECTION
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Speed
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JP10
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JP11
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JP12
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32MHz
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Open
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Closed
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Closed
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40MHz
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Open
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Open
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Closed
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50MHz
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Closed
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Closed
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Open
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60MHz
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Closed
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Open
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Closed
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66MHz
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Open
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Closed
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Open
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75MHz
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Closed
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Closed
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Closed
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80MHz
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Closed
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Open
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Open
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CPU TYPE SELECTION
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Type
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JP8
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P54C
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Pins 1 & 2 closed
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P55C
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Pins 2 & 3 closed
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SERIAL PORT 2 SELECTION
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Setting
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JP36/pins 1 & 2
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JP36/pins 3 & 4
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JP36/pins 5 & 6
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Used as H8
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Closed
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Closed
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Open
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| »
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Used as IR connector
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Open
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Open
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Closed
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PCI REQ/INT SELECTION
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Setting
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JP34
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JP35
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Normal operation
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Open
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Open
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Test mode
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Closed
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Closed
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CLOCK SKEW SELECTION
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Skew
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JP14
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JP15
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JP16
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0
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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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.55
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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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1.10
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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Pins 1 & 2 closed
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1.65
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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-2.20
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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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-1.65
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Pins 2 & 3 closed
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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-1.10
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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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-.55
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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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