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ELEGANCE 486 25/33

NORTHGATE COMPUTER SYSTEMS, INC.

ELEGANCE 486 25/33

Processor

80486DX

Processor Speed

25/33MHz

Chip Set

OPTI

Max. Onboard DRAM

8MB

Cache

128KB

BIOS

AMI

Dimensions

350mm x 304mm

I/O Options

Parallel port, serial ports (2), 32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

J3

Serial port 1

J9

Power LED & keylock

J4

Serial port 2

J10

Speaker

J5

32-bit external memory card

S1

Reset switch

J6

Turbo switch

W6

Parallel port

J8

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Parallel port enabled

SW2/3

Off

 

Parallel port disabled

SW2/3

On

Parallel port select LPT1

SW2/4

Off

 

Parallel port select LPT2

SW2/4

On

Factory configured - do not alter

W1

Open

Factory configured - do not alter

W4

pins 2 & 3 closed

Altered cache miss wait state select 25MHz CPU

W5

pins 2 & 3 closed

 

Altered cache miss wait state select 33MHz CPU

W5

pins 1 & 2 closed

Monitor type select color

W7

pins 2 & 3 closed

 

Monitor type select monochrome

W7

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

5MB

(4) 1M x 9

NONE

(4) 256K x 9

NONE

6MB

(4) 1M x 9

NONE

(4) 256K x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

9MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

NONE

10MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1.

DRAM JUMPER/SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

W8

W9

1MB

Closed

Open

Closed

Closed

2 & 3

2 & 3

2MB

Open

Open

Closed

Open

2 & 3

2 & 3

3MB

Open

Open

Open

Closed

2 & 3

2 & 3

4MB

Open

Open

Open

Closed

2 & 3

2 & 3

4MB

Closed

Closed

Closed

Closed

1 & 2

1 & 2

5MB

Closed

Closed

Closed

Open

1 & 2

1 & 2

6MB

Closed

Closed

Closed

Open

1 & 2

1 & 2

8MB

Open

Closed

Closed

Open

1 & 2

1 & 2

9MB

Open

Closed

Open

Closed

1 & 2

1 & 2

10MB

Open

Closed

Open

Closed

1 & 2

1 & 2

12MB

Open

Closed

Open

Closed

1 & 2

1 & 2

16MB

Open

Closed

Open

Open

1 & 2

1 & 2

Note:Pins designated should be in the closed position.

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 64K x 1

(2) 64K x 1

128KB

(8) 64K x 4

(2) 64K x 4

CACHE JUMPER CONFIGURATION

Size

W2

W3

64KB

pin 1 & 2 closed

pin 1 & 2 closed

128KB

pin 2 & 3 closed

pin 2 & 3 closed

PARALLEL PORT IRQ CONFIGURATION

IRQ

SW3/3

SW3/4

IRQ7

Off

On

IRQ5

On

Off

SERIAL PORT 1 CONFIGURATION

Setting

SW2/1

SW3/1

Enabled

Off

On

Disabled

On

Off

SERIAL PORT 2 CONFIGURATION

Setting

SW2/2

SW3/2

Enabled

Off

On

Disabled

On

Off