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SQ-5550/5551

ZENITH DATA SYSTEMS

SQ-5550/5551

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

16-bit ISA

Topology

Star

Wiring Type

Shielded/Unshielded twisted pair

Boot ROM

Available

DMA CHANNEL

Channel

JP1A

JP1B

JP1C

JP1D

JP2A

JP2B

JP2C

JP2D

 

DMA3

Open

Open

Open

Closed

Open

Open

Open

Closed

DMA5

Open

Open

Closed

Open

Open

Open

Closed

Open

 

DMA6

Open

Closed

Open

Open

Open

Closed

Open

Open

 

DMA7

Closed

Open

Open

Open

Closed

Open

Open

Open

INTERRUPT REQUEST

IRQ

JP3A

JP3B

JP3C

JP3D

JP3E

JP3F

3

Closed

Open

Open

Open

Open

Open

 

4

Open

Closed

Open

Open

Open

Open

 

5

Open

Open

Closed

Open

Open

Open

 

9

Open

Open

Open

Closed

Open

Open

 

10

Open

Open

Open

Open

Closed

Open

 

15

Open

Open

Open

Open

Open

Closed

DATA I/O MODE

Setting

JP4

8-bit mode

Pins 2 & 3 Closed

 

16-bit mode

Pins 1 & 2 Closed

Note:Card must be installed in a 16-bit slot. This setting controls the size of the data bus used. Memory accesses always use 16-bit words.

BOOT ROM

Setting

JP5

Disabled

Open

 

Enabled

Closed

I/O BASE ADDRESS AND BOOT ROM ADDRESS

Address

ROM Address

JP6

JP7

300h

C8000h

Closed

Closed

 

320h

CC000h

Closed

Open

 

340h

D0000h

Open

Closed

 

360H

D4000h

Open

Open

DIAGNOSTIC LED(S)

LED

Status

Condition

1

On

Data is being transmitted

1

Off

Data is not being transmitted

2

Bright

Data is being received

2

Dim

Link pulses are being received

2

Off

Data is not being received