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OC-3109
OLICOM INTERNATIONAL
OC-3109
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NIC Type
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Token-Ring
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Transfer Rate
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4Mbps
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Data Bus
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8-bit ISA
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Topology
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Ring
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Wiring Type
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Shielded twisted pair (DB-9 port)
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Boot ROM
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Available
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INTERRUPT REQUEST
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IRQ
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SR3A
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SR3B
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SR3C
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SR3D
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SR3E
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SR3F
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2
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Closed
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Open
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Open
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Open
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Open
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Open
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3
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Open
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Closed
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Open
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Open
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Open
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Open
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4
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Open
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Open
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Closed
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Open
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Open
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Open
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5
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Open
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Open
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Open
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Closed
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Open
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Open
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6
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Open
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Open
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Open
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Open
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Closed
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Open
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7
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Open
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Open
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Open
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Open
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Open
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Closed
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CLOCK SELECT
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Setting
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SR6
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Onboard clock
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Pins 1 & 2 closed
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System bus clock
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Pins 2 & 3 closed
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Note:If the system's bus clock speed is greater than 8MHz the onboard clock must be enabled.
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BOOT ROM SIZE
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Size
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SR11
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SR12
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8/16KB
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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32KB
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Pins 2 & 3 closed
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Pins 1 & 2 closed
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64KB
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Pins 2 & 3 closed
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Pins 2 & 3 closed
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BOOT ROM
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Setting
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SR13
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Disabled
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Pins 1 & 2 closed
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Enabled
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Pins 2 & 3 closed
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PRIMARY/ALTERNATE SELECT, I/O BASE ADDRESS, AND BOOT ROM ADDRESS
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Setting
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I/O Address
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Boot ROM Address
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SR14
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Primary
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0A20 - 0A2Fh
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D0000 - D7FFFh
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Pins 1 & 2 closed
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Alternate
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1A20 - 1A2Fh
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D8000 - DFFFFh
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Pins 2 & 3 closed
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Note:If two cards are to be used in a single system, one of the cards must be set to primary and the other must be set to alternate.
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