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V55LA
ACER, INC.
V55LA
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Device Type
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Mainboard
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Processor
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Pentium/CX 6X86/AM K5
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Processor Speed
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75/90/100/120/133/150/166/200MHz
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Chip Set
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Unidentified
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Video Chip Set
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Unidentified
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Maximum Onboard Memory
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128MB (EDO & SDRAM supported)
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Maximum Video Memory
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2MB
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Cache
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256/512KB
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BIOS
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Unidentified
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Dimensions
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254mm x 218mm
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I/O Options
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Bus mouse port, Ethernet 10BaseT connector, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, IR connector, line in, wavetable connector, audio in - CD-ROM
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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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Multimedia/ethernet connector
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CN1
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Turbo LED
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CN19/pins 12 & 13
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Audio in - CD-ROM
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CN2
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Turbo
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CN19/pins 15 - 17
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LAN connector
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CN5
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Reset
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CN19/pins 19 & 20
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Wavetable
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CN6
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Video port
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CN21
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PS/2 mouse port
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CN8
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Fax/modem connector
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CN22
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Audio I/O board connector
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CN9
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Reset switch connector
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CN30
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Floppy drive interface
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CN10
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Line in
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CN31
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IDE interface 2
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CN11
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Power LED & hard disk
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JP9
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IDE interface 1
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CN12
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Disk LED
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JP10
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Serial port 1
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CN13
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SMM switch
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JP11/pins 1 & 2
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Serial port 2
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CN14
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Reset switch
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JP11/pins 2 & 3
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Parallel port
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CN17
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Additional reset switch
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JP11/pins 3 & 4
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CPU fan connector
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CN18
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Power switch connector
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JP14
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Power LED & keylock
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CN19/pins 1 - 5
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Standby power connector
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JP15
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Speaker
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CN19/pins 7 - 10
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External battery connector
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JP30
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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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BIOS type select Acer
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JP1
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Pins 1 & 2 closed
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BIOS type select OEM
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JP1
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Pins 2 & 3 closed
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LED for IDE/FDD
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JP2
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Pins 1 & 2 closed
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LED for IDE only
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JP2
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Pins 2 & 3 closed
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Allow boot block programming
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JP5
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Pins 1 & 2 closed
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Normal flash BIOS operation
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JP5
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Pins 2 & 3 closed
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Regulator 1 voltage
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JP7
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Closed
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Regulator 2 voltages
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JP7
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Open
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UPS enabled
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JP16
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Pins 1 & 2 closed
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UPS disabled
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JP16
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Pins 2 & 3 closed
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Factory configured - do not alter
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JP19
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Reserved
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Intel or CX 6X86 "1+4" mode
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JP42
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Pins 1 & 2 closed
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CX 6X86 linear burst mode
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JP42
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Pins 2 & 3 closed
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Onboard sound chip disabled
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SW1/5
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On
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Onboard sound chip enabled
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SW1/5
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Off
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Password bypass
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SW1/6
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On
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Password check
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SW1/6
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Off
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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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SIMM CONFIGURATION
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Size
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Bank 0
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Bank 1
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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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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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CACHE CONFIGURATION
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Size
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Tag SRAM
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Bank 0
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Bank 1
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256KB
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(2) 32K x 32
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(2) 32K x 32
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None
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512KB
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(2) 32K x 32
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(2) 32K x 32
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(2) 32K x 32
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CACHE JUMPER CONFIGURATION
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Size
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JP3
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JP4
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256KB
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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512KB
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Pins 1 & 2 closed
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Pins 2 & 3 closed
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1 MB
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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VIDEO MEMORY CONFIGURATION
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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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(2) 256K x 16
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None
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2MB
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(2) 256K x 16
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(2) 256K x 16
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CPU SPEED SELECTION
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CPU speed
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Clock speed
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SW1/1
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SW1/2
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75MHz
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50MHz
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On
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On
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90MHz
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60MHz
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On
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Off
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100MHz
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66MHz
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Off
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On
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120MHz
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60MHz
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On
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Off
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133MHz
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66MHz
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Off
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On
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150MHz
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60MHz
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On
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Off
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166MHz
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66MHz
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Off
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On
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200MHz
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66MHz
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Off
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On
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CPU FREQUENCY RATIO SELECTION (INTEL)
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Ratio
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SW1/3
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SW1/4
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1.5x
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Off
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On
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1.5x
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Off
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Off
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2x
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On
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Off
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2.5x
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On
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On
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CPU FREQUENCY RATIO SELECTION (CX 6X86)
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Ratio
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SW1/3
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SW1/4
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4x
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Off
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On
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3x
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Off
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Off
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2x
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On
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Off
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1x
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On
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On
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CPU FREQUENCY RATIO SELECTION (AM K5)
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K5
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SW1/3
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SW1/4
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1.5x
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Off
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Off
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2x
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On
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On
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BIOS ROM TYPE SELECTION
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Type
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JP6
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Flash ROM
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Pins 1 & 2 closed
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EPROM
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Pins 2 & 3 closed
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Block flash EEPROM
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Open
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CPU I/O VOLTAGE SELECTION
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Voltage
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JP43
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3.5v
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Pins 1 & 2 closed
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3.3v
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Pins 2 & 3 closed
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CPU CORE VOLTAGE SELECTION
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Voltage
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JP44
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2.5v
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Pins 1 & 2 closed
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2.8v
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Pins 2 & 3 closed
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