UNIDENTIFIED

286A

Processor

80286

Processor Speed

12/16MHz

Chip Set

C & T

Max. Onboard DRAM

5MB

Cache

None

BIOS

AMI

Dimensions

310mm x 218mm

I/O Options

Floppy drive interface, game port, IDE interface, parallel port, serial ports (2)

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

J3

Reset switch

J11

Serial port 1

J4

Speaker

J12

Game port

J5

Power LED & keylock

J13

Parallel port

J7

IDE interface

JP9

Floppy drive interface

J8

Turbo switch

JP23

Turbo LED

J10

IDE interface LED

JP28

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

Monitor type select monochrome

JP2

pins 1 & 2 closed

 

Monitor type select color

JP2

pins 2 & 3 closed

 

Floppy drive interface enabled

JP4

pins 1 & 2 closed

 

Floppy drive interface disabled

JP4

pins 2 & 3 closed

 

CPU low speed CLK select 1/2 ATCLK

JP22

Closed

 

CPU low speed CLK select 1/4 CLK2N

JP22

Open

DRAM CONFIGURATION

Size

Bank 0

P 0

Bank 1

P 1

Bank 2

Bank 3

512KB

(4) 44256

(2) 41256

NONE

NONE

NONE

NONE

640KB

(4) 44256

(2) 41256

(4) 4464

(2) 4164

NONE

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

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

5MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

(2) 1M x 9

(2) 1M x 9

DRAM CONFIGURATION

Setting

JP10

JP11

JP12

JP13

JP14

JP15

SIMM set as Bank 0 & 1

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

SIMM set as Bank 2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

IDE CONFIGURATION

Setting

JP16

JP17

Enabled

Closed

Closed

Disabled

Open

Open

PARALLEL PORT CONFIGURATION

LPT

JP8

JP9

LPT1

pins 1 & 2 closed

pins 2 & 3 closed

LPT2

pins 1 & 2 closed

pins 1 & 2 closed

LPT3

pins 2 & 3 closed

pins 1 & 2 closed

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORT CONFIGURATION

Serial port 1

Serial port 2

JP5

JP6

JP7

COM1

COM2

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

COM1

Disabled

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

COM2

COM1

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

Disabled

COM1

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

Disabled

COM2

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

COM2

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

Disabled

Disabled

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed