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





PA386SX-SMT-16/20/25

PEAKTRON COMPUTER, INC.

PA386SX-SMT-16/20/25

PA286-SMT-12/16/20/25

Processor

80286/80386SX

Processor Speed

12/16/20/25MHz

Chip Set

Peaktron

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

248mm x 218mm

I/O Options

None

NPU Options

80287/80387

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

Speaker

J4

Turbo switch

J2

Power LED & Keylock

J5

Turbo LED

J3

External battery

JP1

Note:Motherboard is supplied with either an 80386SX & 80387SX socket or an 80286 & 80287 socket.

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Monitor type select monochrome

J7

open

 

Monitor type select color

J7

closed

NPU mode select synchronous with OSC1

J11

pins 2 & 3 closed

 

NPU mode select synchronous with oscillator at U49

J11

pins 1 & 2 closed

 

Bus speed select ATCLK/2

SW1/1

Off

 

Bus speed select ATCLK/3

SW1/1

On

Parity check enabled

SW1/2

On

 

Parity check disabled

SW1/2

Off

Shadow ram disabled

SW1/4

On

 

Shadow ram enabled

SW1/4

Off

Note:Socket at U49 may not be available on all boards.

If 8 bit SIMM/SIPPs are used, SW1/switch 2 must be open, otherwise it must be closed.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

P - 0

P - 1

512KB

(4) 44256

NONE

NONE

NONE

(2) 41256

NONE

512KB

NONE

NONE

(2) 256K x 9

NONE

NONE

NONE

1MB

(4) 44256

(4) 44256

NONE

NONE

(2) 41256

(2) 41256

1MB

NONE

NONE

(2) 256K x 9

(2) 256K x 9

NONE

NONE

1.5MB

(4) 44256

(4) 44256

(2) 256K x 9

NONE

NONE

NONE

2MB

(4) 441000

NONE

NONE

NONE

(2) 411000

NONE

2MB

NONE

NONE

(2) 1M x 9

NONE

NONE

NONE

3MB

(4) 44256

(4) 44256

(2) 1M x 9

NONE

NONE

NONE

4MB

(4) 441000

(4) 441000

NONE

NONE

(2) 411000

(2) 411000

4MB

NONE

NONE

(2) 1M x 9

(2) 1M x 9

NONE

NONE

5MB

(4) 44256

(4) 44256

(2) 1M x 9

(2) 1M x 9

NONE

NONE

6MB

(4) 441000

(4) 441000

(2) 1M x 9

NONE

NONE

NONE

8MB

NONE

NONE

(2) 4M x 9

NONE

NONE

NONE

16MB

NONE

NONE

(2) 4M x 9

(2) 4M x 9

NONE

NONE

DRAM JUMPER/SWITCH CONFIGURATION

Size

J8

J9

SW1/5

SW1/6

SW1/7

SW1/8

512KB

2 & 3

1 & 2

Off

On

Off

Off

512KB

1 & 2

2 & 3

Off

On

Off

Off

1MB

2 & 3

1 & 2

Off

On

Off

On

1MB

1 & 2

2 & 3

Off

On

Off

On

1.5MB

2 & 3

1 & 2

Off

Off

On

Off

2MB

2 & 3

1 & 2

On

Off

Off

Off

2MB

1 & 2

2 & 3

On

Off

Off

Off

3MB

2 & 3

1 & 2

Off

On

On

On

4MB

2 & 3

1 & 2

On

Off

Off

On

4MB

1 & 2

2 & 3

On

Off

Off

On

5MB

2 & 3

1 & 2

Off

On

On

On

6MB

2 & 3

1 & 2

On

Off

On

Off

8MB

1 & 2

2 & 3

On

On

Off

Off

16MB

1 & 2

2 & 3

On

On

Off

On

Note:Pins designated should be in the closed position.

BIOS CONFIGURATION

Size

J10

J12

27256

pins 1 & 2 closed

Open

27512

pins 2 & 3 closed

Closed