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ETHERNET A3251
ABC COMPUTER COMPANY, LTD.
ETHERNET A3251
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NIC Type
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Ethernet
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Transfer Rate
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10Mbps
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Data Bus
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16-bit ISA
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Topology
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Linear Bus
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Wiring Type
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RG-58A/U 50ohm coaxial
AUI transceiver via DB-15 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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JP6
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JP7
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JP8
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JP9
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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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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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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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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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BOOT ROM
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Type
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JP1
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Enabled
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Pins 1 & 2 Closed
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Disabled
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Pins 2 & 3 Closed
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CABLE TYPE
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Type
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JP10 - JP13 & JP15
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JP16 - JP18 & JP20 - JP21
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RG-58A/U 50ohm coaxial
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Closed
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Open
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AUI transceiver via DB-15 port
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Open
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Closed
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I/O BASE ADDRESS
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I/O Address
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SW1/1
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SW1/2
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SW1/3
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SW1/4
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280-29F
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On
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On
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On
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On
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2A0-2BF
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On
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Off
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On
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On
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2C0-2DF
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On
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On
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Off
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On
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2E0-2FF
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On
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Off
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Off
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On
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300-31F
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On
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On
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On
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Off
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320-33F
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On
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Off
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On
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Off
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340-35F
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On
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On
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Off
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Off
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360-37F
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On
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Off
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Off
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Off
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BASE MEMORY ADDRESS
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Base Address
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SW1/5
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SW1/6
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C0000-C3FFF
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On
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On
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C4000-C7FFF
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Off
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On
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C8000-CBFFF
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On
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Off
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CC000- CFFFF
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Off
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Off
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MISCELLANEOUS NOTES
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Different drivers must be used for the National & the Fujitsu chipset cards, & are not interchangeable. Fujitsu adapters may be used for either 8 or 16 bit Fujitsu cards. While the National chipset cards require a different driver for an 8 or 16 bit card.
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