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DFI-386SX
DIAMOND FLOWER, INC.
DFI-386SX
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Processor
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80386SX
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Processor Speed
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16MHz
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Chip Set
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Intel
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Max. Onboard DRAM
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8MB
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Cache
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None
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BIOS
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DFI
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Dimensions
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330mm x 220mm
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I/O Options
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None
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NPU Options
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80387SX
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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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Turbo LED
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J12
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Turbo switch
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J2/J11
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Power LED & keylock
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J13
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Reset switch
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J3/J9
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Auxiliary keyboard
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J14
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Speaker
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J10
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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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Battery select internal
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J4
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pins 2 & 3 closed
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Battery select external
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J4
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pins 1 & 2 closed
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Monitor type select monochrome
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J5
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pins 2 & 3 closed
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Monitor type select color
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J5
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pins 1 & 2 closed
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| »
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BIOS type select 27256
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J6
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pins 2 & 3 closed
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BIOS type select 27512
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J6
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pins 1 & 2 closed
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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Bank 2
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Bank 3
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512KB
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(18 41256
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NONE
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NONE
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NONE
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512KB
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NONE
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NONE
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(2) 256K x 9
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NONE
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1MB
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(18) 41256
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(18) 41256
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NONE
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NONE
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1MB
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NONE
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NONE
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(2) 256K x 9
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(2) 256K x 9
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2MB
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(18) 41256
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(18) 41256
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(2) 256K x 9
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(2) 256K x 9
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2MB
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(18) 411000
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NONE
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NONE
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NONE
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2MB
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NONE
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NONE
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(2) 1M x 9
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NONE
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4MB
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(18) 411000
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(18) 411000
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NONE
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NONE
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4MB
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NONE
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NONE
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(2) 1M x 9
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(2) 1M x 9
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8MB
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(18) 411000
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(18) 411000
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(2) 1M x 9
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(2) 1M x 9
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DRAM JUMPER CONFIGURATION
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Size
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J15
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J16
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J17
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J18
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J19
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J20
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512KB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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512KB
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1MB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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1MB
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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2MB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2MB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2MB
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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4MB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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4MB
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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8MB
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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Note: Pins designated should be in the closed position.
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DRAM MODE CONFIGURATION
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Mode
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Maximum active pages
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DRAM type
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J7
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J8
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Fast page 1 (FP1)
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4
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100ns
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Open
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Open
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Fast page 2 (FP2)
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1
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100ns
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Open
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Closed
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Slow page 1 (SP1)
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4
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100ns
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Closed
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Open
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Slow page 2 (SP2)
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4
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120ns
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Closed
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Closed
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Note:In order to use fast page modes, the DRAM chips must meet the following specifications:
tCAS (access time)=35ns , tCAC (pulse width)=35ns , tCP (precharge time)=20ns.
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