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SLIMLINE SP

NORTHGATE COMPUTER SYSTEMS, INC.

SLIMLINE SP

Processor

80386DX/80486DX

Processor Speed

25/33MHz

Chip Set

VLSI

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

AMI

Dimensions

350mm x 304mm

I/O Options

Proprietary CPU/NPU module slot, parallel port, serial ports (2), floppy drive interface, IDE interface, VGA port

NPU Options

80387/3167/4167 (on external CPU/NPU card)

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary CPU module

CPU1

Serial port 1

J9

VGA port

J1

Serial port 2

J10

External battery

J2

Parallel port LPT1

J15

Turbo LED

J4

Floppy drive interface

J16

Power LED & keylock

J5

IDE interface

J17

Reset switch

J6

Speaker

J19

IDE interface LED

J8

Riser card

R1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Floppy drive write precomp select alternate

W2

pins 2 & 3 closed

 

Floppy drive write precomp select normal

W2

pins 1 & 2 closed

Factory configured - do not alter

W3

N/A

Monitor type select monochrome

W4

pins 1 & 2 closed

 

Monitor type select color

W4

pins 2 & 3 closed

CMOS memory normal operation

W8

Open

 

CMOS memory clear

W8

Closed

Parallel port mode select bi-directional

W13

pins 2 & 3 closed

 

Parallel port mode select input only

W13

pins 1 & 2 closed

Floppy drive mode select single speed

W18

pins 1 & 2 closed

 

Floppy drive mode select dual speed

W18

pins 2 & 3 closed

Factory configured - do not alter

W27

N/A

Factory configured - do not alter

W29

N/A

Factory configured - do not alter

SW1 pins 1 & 2

N/A

Factory configured - do not alter

SW1 pins 5 & 6

N/A

VGA BIOS shadowing enabled

SW1 pins 11 & 12

Closed

 

VGA BIOS shadowing disabled

SW1 pins 11 & 12

Open

BIOS shadowing enabled

SW1 pins 11 & 12

Closed

 

BIOS shadowing disabled

SW1 pins 11 & 12

Open

IRQ6 enabled

SW2 pins 9 & 10

Closed

 

IRQ6 disabled

SW2 pins 9 & 10

Open

Floppy drive interface enabled

SW3 pins 1 & 2

Open

 

Floppy drive interface disabled

SW3 pins 1 & 2

Closed

Note:The locations of W8 & W29 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

DRAM JUMPER/SWITCH CONFIGURATION

Size

SW1

W5

W6

1MB

3 & 4, 17 & 18, 19 & 20

2 & 3

2 & 3

2MB

17 & 18, 19 & 20

2 & 3

2 & 3

4MB

3 & 4, 17 & 18

1 & 2

2 & 3

8MB

17 & 18

1 & 2

2 & 3

16MB

3 & 4

1 & 2

1 & 2

32MB

Open

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

IDE CONFIGURATION

Setting

SW21

W20

Enabled

Closed

Open

Disabled

Open

Closed

PARALLEL PORT IRQ CONFIGURATION

IRQ

SW2

IRQ5

pins 5 & 6 closed

IRQ7

pins 7 & 8 closed

PARALLEL PORT CONFIGURATION

Setting

SW3

LPT1/3BCh

pins 9 & 10 closed

LPT1/378h

Open

LPT2/278h

pins 7 & 8 closed

Disabled

pins 7 & 8, 9 & 10 closed

SERIAL PORT 1 CONFIGURATION

Setting

SW2

SW3

Enabled

pins 1 & 2 closed

Open

Disabled

Open

pins 5 & 6 closed

SERIAL PORT 2 CONFIGURATION

Setting

SW2

SW3

Enabled

pins 3 & 4 closed

Open

Disabled

Open

pins 3 & 4 closed

VIDEO CONFIGURATION

Setting

SW5

W19

Enabled

pins 1 & 2, 3 & 4, 5 & 6 closed

pins 1 & 2 closed

Disabled

Open

pins 2 & 3 closed

BIOS CONFIGURATION

Setting

SW1

F000-FFFF (VGA BIOS disabled)

pins 7 & 8, 9 & 10 closed

F000-FFFF, E000-EFFF (VGA BIOS disabled, BIOS shadowing enabled)

pins 7 & 8 closed

F000-FFFF VGA BIOS at C000-C7FF

pins 9 & 10 closed

F000-FFFF VGA BIOS at C000-C7FF, IDE interface at C800-CFFF

pins 9 & 10 closed

CACHE CONFIGURATION

Size

Bank 0

64KB

(8) 8K x 8

256KB

(8) 32K x 8

CACHE JUMPER CONFIGURATION

Size

W1

64KB

Open

256KB

pins 1 & 2, 3 & 4 closed

USER CONFIGURABLE SETTINGS

Setting

W3

W4

W5

Burst mode enabled

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

Burst mode enabled

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

CACHE CONFIGURATION

Size

Bank 0

64KB

(8) 8K x 8

256KB

(8) 32K x 8

CACHE JUMPER CONFIGURATION

Size

W1

W2

W5

64KB

pins 1 & 2 closed

pins 1 & 2 closed

Open

256KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 3 & 4, 5 & 6 closed