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NPU 9144 (3C505)

OLIVETTI

NPU 9144 (3C505)

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

16-bit ISA

Topology

Linear Bus

Wiring Type

DIX Transceiver via DB-15 port

RG-58A/U 50ohm coaxial

Boot ROM

Available

CONNECTIONS

Purpose

Location

Purpose

Location

DIX Transceiver via DB-15 port

PORT 1

RG-58A/U 50ohm coaxial

PORT 2

INTERRUPT SELECTION

IRQ

SW7/5

SW7/6

SW7/7

SW7/8

SW7/9

SW7/10

»

3

Open

Open

Open

Open

Open

Closed

 

4

Open

Open

Open

Open

Closed

Open

 

5

Open

Open

Open

Closed

Open

Open

 

6

Open

Open

Closed

Open

Open

Open

 

7

Open

Closed

Open

Open

Open

Open

 

9

Closed

Open

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

Open

 

11

Open

Open

Open

Open

Open

Open

 

12

Open

Open

Open

Open

Open

Open

 

14

Open

Open

Open

Open

Open

Open

 

15

Open

Open

Open

Open

Open

Open

INTERRUPT SELECTION

IRQ

SW5/1

SW5/2

SW5/3

SW5/4

SW5/5

»

3

Open

Open

Open

Open

Open

 

4

Open

Open

Open

Open

Open

 

5

Open

Open

Open

Open

Open

 

6

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Open

 

9

Open

Open

Open

Open

Open

 

10

Closed

Open

Open

Open

Open

 

11

Open

Closed

Open

Open

Open

 

12

Open

Open

Closed

Open

Open

 

14

Open

Open

Open

Open

Closed

 

15

Open

Open

Open

Closed

Open

DMA CHANNEL SELECTION

Channel

SW5/6

SW5/7

SW7/1

SW7/2

SW7/3

SW7/4

 

0

Closed

Closed

Open

Open

Open

Open

»

1

Open

Open

Open

Open

Closed

Closed

 

3

Open

Open

Closed

Closed

Open

Open

 

5

Open

Open

Open

Open

Open

Open

 

6

Open

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Open

Open

DMA CHANNEL SELECTION (CON’T)

Channel

SW5/8

SW5/9

SW5/10

SW5/11

SW5/12

SW5/13

 

0

Open

Open

Open

Open

Open

Open

»

1

Open

Open

Open

Open

Open

Open

 

3

Open

Open

Open

Open

Open

Open

 

5

Closed

Closed

Open

Open

Open

Open

 

6

Open

Open

Closed

Closed

Open

Open

 

7

Open

Open

Open

Open

Closed

Closed

ROM SIZE SELECTION

Size

SW1

SW2

64KB

Off

Off

128KB

Off

Off

256KB

On

Off

512KB

On

On

BIOS ADDRESS SELECTION

Address

SW6/1

SW6/2

SW6/3

SW6/4

SW6/5

SW6/6

SW6/7

SW6/8

 

C8000h

Open

Open

Closed

Open

Open

Closed

Closed

Open

 

CA000h

Closed

Open

Closed

Open

Open

Closed

Closed

Open

»

CC000h

Open

Closed

Closed

Open

Open

Closed

Closed

Open

 

CE000h

Closed

Closed

Closed

Open

Open

Closed

Closed

Open

 

D0000h

Open

Open

Open

Closed

Open

Closed

Closed

Open

 

E6000h

Closed

Closed

Open

Open

Closed

Closed

Closed

Open

 

E8000h

Open

Open

Closed

Open

Closed

Closed

Closed

Open

 

EA000h

Closed

Open

Closed

Open

Closed

Closed

Closed

Open

 

EC000h

Open

Closed

Closed

Open

Closed

Closed

Closed

Open

 

EE000h

Closed

Closed

Closed

Open

Closed

Closed

Closed

Open

TRANCEIVER CONFIGURATION

Setting

JP1

Internal - BNC

Pins 1 & 2 closed

External - DIX

Pins 3 & 4 closed

FACTORY CONFIGURED - DO NOT ALTER

Jumper/Switch

Position

SW3

Off

BASE I/O ADDRESS SELECTION

Setting

SW4/1

SW4/2

SW4/3

SW4/4

SW4/5

SW4/6

000h

Off

Off

Off

Off

Off

Off

100h

Off

Off

Off

Off

On

Off

200h

Off

Off

Off

Off

Off

On

300h

Off

Off

Off

Off

On

On