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KMX-AL25/33SX Motherboard Settings and Configuration






ACER, INC.

KMX-AL25/33SX

   

Processor

80386SX/CX486SLC

Processor Speed

16/20/25/33MHz

Chip Set

ALI

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

178mm x 218mm

I/O Options

None

NPU Options

80387SX

   

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo LED & Turbo switch

J8

Reset switch

J6

Power LED & keylock

J9

Speaker

J7

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

NPU mode select synchronous with CPU

JP2

pins 1 & 2 closed

 

NPU mode select asynchronous with CPU

JP2

pins 2 & 3 closed

»

RTC type select 146818

JP3

Open

 

RTC type select 1287

JP3

Closed

»

Monitor type select color

JP4

pins 1 & 2 closed

 

Monitor type select monochrome

JP4

pins 2 & 3 closed

»

Parity check disabled

JP6

Closed

 

Parity check enabled

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 CONFIGURATION

Speed

JP1

JP5

16MHz

pins 1 & 2 closed

pins 1 & 2 closed

20MHz

pins 2 & 3 closed

pins 1 & 2 closed

25MHz

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed








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