UNIDENTIFIED

386SX-20/25

Processor

80386SX

Processor Speed

20/25MHz

Chip Set

Headland

Max. onboard DRAM

8MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP3

Turbo Switch

JP11

Power LED & keylock

JP9

Speaker

JP12

Turbo LED

JP10

Reset

JP13

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP2

Closed

 

Monitor type select monochrome

JP2

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(2) 256K x 9

NONE

NONE

NONE

1MB

(2) 256K x 9

(2) 256K x 9

NONE

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

NONE

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

NONE

4.5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

NONE

5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

(2) 256K x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NONE

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

PIPELINE MODE CONFIGURATION

Mode

CPU Speed

JP5

JP6

JP7

Enabled

20 or 25MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

Disabled

20mhz only

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed