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OC-3109

OLICOM INTERNATIONAL

OC-3109

NIC Type

Token-Ring

Transfer Rate

4Mbps

Data Bus

8-bit ISA

Topology

Ring

Wiring Type

Shielded twisted pair (DB-9 port)

Boot ROM

Available

INTERRUPT REQUEST

IRQ

SR3A

SR3B

SR3C

SR3D

SR3E

SR3F

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

CLOCK SELECT

Setting

SR6

Onboard clock

Pins 1 & 2 closed

 

System bus clock

Pins 2 & 3 closed

Note:If the system's bus clock speed is greater than 8MHz the onboard clock must be enabled.

BOOT ROM SIZE

Size

SR11

SR12

8/16KB

Pins 1 & 2 closed

Pins 1 & 2 closed

 

32KB

Pins 2 & 3 closed

Pins 1 & 2 closed

 

64KB

Pins 2 & 3 closed

Pins 2 & 3 closed

BOOT ROM

Setting

SR13

Disabled

Pins 1 & 2 closed

 

Enabled

Pins 2 & 3 closed

PRIMARY/ALTERNATE SELECT, I/O BASE ADDRESS, AND BOOT ROM ADDRESS

Setting

I/O Address

Boot ROM Address

SR14

Primary

0A20 - 0A2Fh

D0000 - D7FFFh

Pins 1 & 2 closed

 

Alternate

1A20 - 1A2Fh

D8000 - DFFFFh

Pins 2 & 3 closed

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.