IMC NETWORK CORPORATION

PCNIC

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

8/16-bit ISA

Topology

Linear Bus

Wiring Type

RG--58A/U 50ohm coaxial

RG--62A/U 93ohm coaxial

75ohm coaxial

AUI transceiver via DB-15 port

Boot ROM

Available

CABLE TYPE

Type

S1

S2

S3

»

RG--58A/U 50ohm coaxial

Open

Installed

50ohm (P/N 90-39050)

 

RG--62A/U 93ohm coaxial

Open

Installed

93ohm (P/N 90-39093)

 

75ohm coaxial

Open

Installed

75ohm (P/N 90-39075)

 

AUI transceiver via DB-15 port

Installed

Open

N/A

 

Notes:S1 and S2 are sockets for a transformer chip while S3 is a socket for a Cabling Option Resistor Kit (CORK). To choose a cable type insert the appropriate chips into the appropriate sockets. All cards on the network segment must use the same type of coaxial cable.

COMPATIBILITY MODE

Setting

JP1

»

Disabled

Pins 1 & 2 closed

 

Enabled

PIns 2 & 3 closed

Note:On some systems the data bus timing is not truly IBM PC/AT compatible. If the card will not initialize, enabling compatibility mode may allow the card to operate properly.

BOOT ROM ADDRESS

Address

SW1/1

SW1/2

C0000h

Off

Off

C8000h

On

Off

D0000h

Off

On

D8000h

Off

Off

Note:A boot ROM kit consists of a PEEL chip and a boot ROM chip. Both chips must be installed.

I/O BASE ADDRESS (LAST TWO DIGITS)

Address

SW1/3

SW3/4

SW3/5

SW3/6

SW3/7

x00 - x07

On

On

On

On

On

x08 - x0F

Off

On

On

On

On

x10 - x07

On

Off

On

On

On

x18 - x1Fh

Off

Off

On

On

On

x20 - x07

On

On

Off

On

On

x28 - x2Fh

Off

On

Off

On

On

x30 - x07

On

Off

Off

On

On

x38 - x3Fh

Off

Off

Off

On

On

x40 - x47h

On

On

On

Off

On

x40 - x4Fh

Off

On

On

Off

On

x50 - x57h

On

Off

On

Off

On

x50 - x5Fh

Off

Off

On

Off

On

x60 - x67h

On

On

Off

Off

On

x60 - x6Fh

Off

On

Off

Off

On

x70 - x77h

On

Off

Off

Off

On

x70 - x7Fh

Off

Off

Off

Off

On

x80 - x87h

On

On

On

On

Off

x88 - x8Fh

Off

On

On

On

Off

x90 - x97h

On

Off

On

On

Off

x90 - x9Fh

Off

Off

On

On

Off

xA0 - xA7h

On

On

Off

On

Off

xA0 - xAFh

Off

On

Off

On

Off

xB0 - xB7h

On

Off

Off

On

Off

xB0 - xBFh

Off

Off

Off

On

Off

xC0 - xC7h

On

On

On

Off

Off

xC0 - xCFh

Off

On

On

Off

Off

xD0 - xD7h

On

Off

On

Off

Off

xD0 - xDFh

Off

Off

On

Off

Off

xE0 - xE7h

On

On

Off

Off

Off

xE0 - xEFh

Off

On

Off

Off

Off

xF0 - xF7h

On

Off

Off

Off

Off

xF0 - xFFh

Off

Off

Off

Off

Off

Note:The two digits selected here must be added to the digit selected in the following table.

I/O BASE ADDRESS (FIRST DIGIT)

Address

SW1/8

2xx - 2xxh

On

3xx - 3xxh

Off