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OPM 386 MOTHER BOARD

UNIDENTIFIED

OPM 386 MOTHER BOARD

Processor

80386DX

Processor Speed

25MHz

Chip Set

OPTI

Max. Onboard DRAM

8MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

IDE interface, Floppy drive interface

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J1

Speaker

J7

Reset switch

J2

IDE interface

J9

Turbo LED

J3

Floppy drive interface

J10

Power LED & keylock

J5

External battery

JP6

IDE interface LED

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

Monitor type select color

J4

pins 1 & 2 closed

 

Monitor type select monochrome

J4

pins 2 & 3 closed

Pipeline disabled

J8

pins 1 & 2 closed

 

Pipeline enabled

J8

pins 2 & 3 closed

Floppy drive interface address select 370h - 377h

JP3

Closed

 

Floppy drive interface address select 3F0h - 3FFh

JP3

Open

 

Floppy drive interface enabled

JP4

Closed

 

Floppy drive interface disabled

JP4

Open

Note: The location of J8 is 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

5MB

(4) 256K x 9

(4) 1M x 9

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

IDE INTERFACE CONFIGURATION

Setting

JP1

JP2

Enabled

Open

Closed

Disabled

Closed

Open