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OMNISTATION 286

NORTHGATE COMPUTER SYSTEMS, INC.

OMNISTATION 286

Processor

80286

Processor Speed

12.5MHz

Chip Set

None

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Bus mouse port, floppy drive interface, IDE interface, parallel port, proprietary 16-bit AT expansion slot, serial ports (2), VGA port

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary expansion card

EX1

Serial port 1

J9

Bus mouse port

J4

Parallel port

J10

Reset switch

J6

VGA port

J12

Floppy drive interface

J7

IDE interface

J14

Serial port 2

J8

IDE interface LED & keylock

J15

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

W2

pins 1 & 2 closed

Monitor type select monochrome

W3

pins 1 & 2 closed

 

Monitor type select color

W3

pins 2 & 3 closed

Floppy drive interface enabled

W4

pins 2 & 3 closed

 

Floppy drive interface disabled

W4

pins 1 & 2 closed

Factory configured - do not alter

W5Z

pins 1 & 2 closed

 

NPU type select 12.5MHz

W9

pins 1 & 2 closed

 

NPU type select 6MHz

W9

pins 2 & 3 closed

VGA port enabled

W11

pins 2 & 3 closed

 

VGA port disabled

W11

pins 1 & 2 closed

IDE interface LED enabled

W12

pins 2 & 3 closed

 

IDE interface LED disabled

W12

pins 1 & 2 closed

Factory configured - do not alter

W15

pins 1 & 2 closed

Bus mouse port enabled (IRQ12)

W16

Closed

 

Bus mouse port disabled

W16

Open

Factory configured - do not alter

W17

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

2.5MB

(2) 1M x 9

(2) 256K x 9

4MB

(2) 1M x 9

(2) 1M x 9

CONNECTIONS (AT EXPANSION CARD)

Purpose

Location

Purpose

Location

Data access LED

J1

Turbo LED

J7

INTERRUPT JUMPER CONFIGURATION (AT EXPANSION CARD)

Interrupt

J2

J3

J4

J5

J6

IRQ2

Closed

Open

Open

Open

Open

IRQ3

Open

Open

Open

Open

Closed

IRQ4

Open

Open

Open

Closed

Open

IRQ5

Open

Open

Closed

Open

Open

IRQ7

Open

Closed

Open

Open

Open