UNIDENTIFIED

A-B 340SX / A-B 341SX

Processor

AM386SX/80386SX

Processor Speed

25/33/40MHz

Chip Set

ALI

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

220mm x 170mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo switch

J8

Reset switch

J6

Turbo LED

J8

Speaker

J7

Power LED & keylock

J9

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

NPU synchronous with CPU

JP2

pins 1 & 2 closed

 

NPU asynchronous with CPU

JP2

pins 2 & 3 closed

»

Factory configured - do not alter

JP3

Open

»

Monitor type select color

JP4

pins 2 & 3 closed

 

Monitor type select monochrome

JP4

pins 1 & 2 closed

»

Parity check enabled

JP6

Open

 

Parity check disabled

JP6

Closed

»

Factory configured - do not alter

JP7

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

BUS SPEED SELECT

CPU Speed

JP1

JP5

25MHz

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

40MHz

pins 1 & 2 closed

pins 1 & 2 closed