...because we can't all be on the bleeding edge...





386 ELEGANCE

NORTHGATE COMPUTER SYSTEMS, INC.

386 ELEGANCE

Processor

80386DX

Processor Speed

20/25MHz

Chip Set

OPTI

Max. Onboard DRAM

8MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card slot

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

J3

Reset switch

J6

Power LED & keylock

J4

32-bit external memory card

S1

Speaker

J5

Turbo switch

W6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter (Rev. B that has jumper W10)

W1

pins 2 & 3 closed

Factory configured - do not alter (Rev. Bs without jumper W10)

W1

Open

DRAM (8-bit) speed select 20MHz CPU

W4

pins 2 & 3 closed

 

DRAM (8-bit) speed select 25MHz CPU

W4

pins 1 & 2 closed

DRAM (16-bit) speed select 20MHz CPU

W5

pins 2 & 3 closed

 

DRAM (16-bit) speed select 25MHz CPU

W5

pins 1 & 2 closed

Monitor type select monochrome

W7

pins 1 & 2 closed

 

Monitor type select color

W7

pins 2 & 3 closed

Factory configured - do not alter (some Rev. Bs only)

W10

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

Socket U60

Socket U73

1MB

(4) 256K x 9

NONE

NONE

NONE

PAL B

PAL B

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

PAL B

PAL B

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

PAL B

PAL B

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

PAL B

PAL B

4MB

(4) 1M x 9

NONE

NONE

NONE

PAL A

PAL A

5MB

(4) 1M x 9

NONE

(4) 256K x 9

NONE

PAL A

PAL A

6MB

(4) 1M x 9

NONE

(4) 256K x 9

(4) 256K x 9

PAL A

PAL A

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

PAL A

PAL A

9MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

NONE

PAL A

PAL A

10MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

PAL A

PAL A

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

PAL A

PAL A

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

PAL A

PAL A

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

DRAM JUMPER CONFIGURATION

Size

SW1

W8

W9

1MB

Open

pins 2 & 3 closed

pins 2 & 3 closed

2MB

Open

pins 2 & 3 closed

pins 2 & 3 closed

3MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

4MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

4MB

Open

pins 2 & 3 closed

pins 2 & 3 closed

5MB

pins 3 & 4, 7 & 8 closed

pins 1 & 2 closed

pins 1 & 2 closed

6MB

pins 3 & 4, 7 & 8 closed

pins 1 & 2 closed

pins 1 & 2 closed

8MB

Open

pins 1 & 2 closed

pins 1 & 2 closed

9MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

10MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

12MB

pins 1 & 2, 7 & 8 closed

pins 1 & 2 closed

pins 1 & 2 closed

16MB

Open

pins 1 & 2 closed

pins 1 & 2 closed

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 64K x 1

(2) 64K x 1

256KB

(8) 64K x 4

(2) 64K x 4

CACHE JUMPER CONFIGURATION

Size

W2

W3

64KB

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed