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





486ZXP

NORTHGATE COMPUTER SYSTEMS, INC.

486ZXP

Processor

80486SX/80486DX/80486DX2

Processor Speed

16/20/25/33/50(internal)/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial ports (2), floppy drive interface, IDE interface

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

J1

Turbo LED

JP3

Serial port 1

J2

Reset switch

JP4

Serial port 2

J3

Speaker

JP5

Floppy drive interface

J4

IDE interface LED

JP6

IDE interface

J5

External battery

JP22

Power LED & keylock

JP2

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

Parallel port IRQ select LPT1/IRQ7

JP19

pins 2 & 3 closed

 

Parallel port IRQ select LPT2/IRQ5

JP19

pins 1 & 2 closed

I/O ports enabled

JP20

pins 1 & 2 closed

 

I/O ports disabled

JP20

pins 2 & 3 closed

Battery type select internal

JP21

pins 2 & 3 closed

 

Battery type select external

JP21

pins 1 & 2 closed

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

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

Note:Systems being used as file servers should not use the 5MB or 20MB configurations.

CACHE CONFIGURATION

Size

Bank 0

64KB

(8) 64K x 1

256KB

(8) 64K x 4

CACHE JUMPER CONFIGURATION

Size

JP7

JP11

JP12

JP13

64KB

Open

Open

Open

Open

256KB

Closed

Closed

Open

Closed

CPU TYPE CONFIGURATION

Type

JP8

JP9

JP10

80486SX

Open

pins 2 & 3 closed

Open

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX2

pins 2 & 3 closed

pins 1 & 2 closed

Closed

CPU SPEEDCONFIGURATION

Speed

JP14

JP15

JP16

JP17

16MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

20MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

25MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

50iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

66iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed