3Com 3C501

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ETHERLINK (3C501; ASSY.#1221)

3com 3c501 front.jpg
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Linear Bus
Wiring Type RG-58A/U 50ohm coaxial
AUI transceiver via DB-15 port
Boot ROM Available


CABLE TYPE SELECTION

Type Setting
RG-58A/U 50ohm coaxial Option 1
AUI transceiver via DB-15 port Option 2
Configuration jumpers

BOOT ROM CONFIGURATION

Setting JP3
Disabled Pins 2 & 3 Closed
Enabled Pins 1 & 2 Closed


I/O BASE ADDRESS SELECTION BOOT ROM CONFIGURATION

Address JP4 JP5 JP6 JP7 JP8 JP9
300h Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 Pins 1 & 2
310h Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 Pins 1 & 2

Note:Pins designated should be in the closed position.


BOOT ROM ADDRESS SELECTION

Address JP12 JP13 JP14 JP15 JP16 JP17 JP18 JP19
CC000h Pins 2&3 Pins 2&3 Pins 1&2 Pins 1&2 Pins 2&3 Pins 2&3 Pins 1&2 Pins 1&2
EC000h Pins 2&3 Pins 2&3 Pins 1&2 Pins 1&2 Pins 2&3 Pins 1&2 Pins 1&2 Pins 1&2

Note:Pins designated should be in the closed position.


INTERRUPT REQUEST SELECTION

IRQ JP20 JP21 JP22 JP23 JP24 JP25
2 Closed Open Open Open Open Open
3 Open Closed Open Open Open Open
4 Open Open Closed Open Open Open
5 Open Open Open Closed Open Open
6 Open Open Open Open Closed Open
7 Open Open Open Open Open Closed


DMA CHANNEL SELECTION

Channel JP26 JP27 JP28 JP29 JP30 JP31
DMA1 Closed Open Open Closed Open Open
DMA2 Open Closed Open Open Closed Open
DMA3 Open Open Closed Open Open Closed