JPN CORPORATION

MB386SX

   

Processor

80386SX

Processor Speed

16/20/25MHz

Chip Set

VLSI

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387SX

   

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

JP20

Turbo switch

JP52

Power LED & keylock

JP30

Turbo LED

JP56

Reset switch

JP51

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Pipeline mode enabled

JP10

closed

 

Pipeline mode disabled

JP10

open

»

BIOS type select 27256

JP23

JP24

open

closed

 

BIOS type select 27128

JP23

JP24

open

open

 

BIOS type select 27512

JP23

JP24

closed

closed

»

Parity check enabled

JP25

closed

 

Parity check disabled

JP25

open

»

Monitor type select color

JP31

closed

 

Monitor type select monochrome

JP31

open

»

Power good signal detect from board

JP55

pins 1 & 2 closed

 

Power good signal detect from power supply

JP55

pins 2 & 3 closed

»

CMOS memory normal operation

JP58

pins 1 & 2 closed

 

CMOS memory clear

JP58

pins 3 & 4 closed

»

Factory configured - do not alter

JP59

N/A

DRAM CONFIGURATION

Size

Bank 0

Parity (P-0)

Bank 1

Parity (P-1)

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

1.5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

NONE

2MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

3MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9