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P9-640

AMPTRON INTERNATIONAL, INC.

P9-640

Processor

80386SX

Processor Speed

25/33MHz

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

16MB

Maximum Video Memory

None

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo LED

J8 pins 1 & 2

Reset switch

J6

Turbo switch

J8 pins 4 & 5

Speaker

J7

Power LED & keylock

J9

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Address delay enabled

J5

Closed

 

Address delay disabled

J5

Open

 

NPU synchronous with CPU

JP2

Pins 1 & 2 closed

 

NPU asynchronous with CPU

JP2

Pins 2 & 3 closed

Factory configured - do not alter

JP3

Unidentified

 

Monitor type select color

JP4

Pins 2 & 3 closed

 

Monitor type select monochrome

JP4

Pins 1 & 2 closed

 

Parity check enabled

JP6

Closed

 

Parity check disabled

JP6

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

None

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

None

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

None

16MB

(2) 4M x 9

(2) 4M x 9

CPU SPEED SELECTION

Speed

JP1

JP5

25MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

33MHz

Pins 2 & 3 closed

Pins 2 & 3 closed