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





AT 286

JPN CORPORATION

AT 286

   

Processor

80286

Processor Speed

12/16/25MHz

Chip Set

ACT

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

305mm x 222mm

I/O Options

None

NPU Options

80287

   

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

JP2

External battery

JP11

Power LED & keylock

JP7

Speaker

JP14

Reset switch

JP10

Turbo switch

JP19

USER CONFIGURABLE JUMPERS

Function

Jumper/Switch

Position

BIOS type select 27128

JP6

pins 1 & 2 closed

 

BIOS type select 27256

JP6

pins 2 & 3 closed

Monitor type select color

JP9

pins 2 & 3 closed

 

Monitor type select monochrome

JP9

pins 1 & 2 closed

Battery select internal

JP12

pins 2 & 3 closed

 

Battery select external

JP12

pins 1 & 2 closed

Power good signal detect from power supply

JP13

pins 1 & 2 closed

 

Power good signal detect from board

JP13

pins 2 & 3 closed

Bus speed select 8Mhz

JP17

pins 1 & 2 closed

 

Bus speed select 6Mhz

JP17

pins 2 & 3 closed

Parity check enabled

JP20

pins 1 & 2 closed

 

Parity check disabled

JP20

pins 2 & 3 closed

DRAM speed select 1 wait state

SW1/4

On

 

DRAM speed select 0 wait states

SW1/4

Off

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

512KB

NONE

NONE

NONE

NONE

(2) 256K x 9

NONE

640KB

(4) 44256

(2) 41256

(4) 4464

(2) 4164

NONE

NONE

640KB

NONE

NONE

(4) 4464

(2) 4164

(2) 256K x 9

NONE

1MB

(4) 44256

(2) 41256

(4) 44256

(2) 41256

NONE

NONE

1MB

(4) 44256

(2) 41256

NONE

NONE

NONE

(2) 256K x 9

1MB

NONE

NONE

NONE

NONE

(2) 256K x 9

(2) 256K x 9

2MB

NONE

NONE

NONE

NONE

(2) 1M x 9

NONE

4MB

NONE

NONE

NONE

NONE

(2) 1M x 9

(2) 1M x 9

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

512KB

On

On

On

640KB

On

Off

Off

1MB

On

Off

On

2MB

Off

On

On

4MB

Off

Off

On