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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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RTC reset (DS12887A only) disabled
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J1
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Open
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RTC reset (DS12887A only) enabled
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J1
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Closed
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»
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Flash EPROM disabled
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J2
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Open
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Flash EPROM enabled
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J2
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Closed
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»
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Internal write-back cache enabled
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J3
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Open
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Internal write-through cache enabled
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J3
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Closed
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»
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External parity check enabled
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J4
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pins 1 & 3 and 2 & 4
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External parity check disabled
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J4
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pins 1 & 2 and 3 & 4
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»
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A31 set low
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J5
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pins 1 & 2 closed
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A31 pulled high
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J5
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pins 2 & 3 closed
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»
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A30 set low
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J6
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pins 1 & 2 closed
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A30 pulled high
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J6
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pins 2 & 3 closed
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Software RTC clear supporting AMI BIOS
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J7
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pins 2 & 3 closed
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Software RTC clear supporting Award BIOS
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J7
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pins 1 & 2 closed
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»
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Internal parity check disabled
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J8
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Open
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Internal parity check enabled
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J8
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Closed
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»
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Factory configured - do not alter
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J14
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Open
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Note:Pins designated should be in the closed position. The location of J8 is unidentified.
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