ACER, INC.

IP25AB

Processor

80486SX/80486DX

Processor Speed

20/25/33MHz

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

32MB

Maximum Video Memory

None

Cache

None

BIOS

Acer

Dimensions

220mm x 170mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

CN1 pins 1 - 5

Turbo switch

CN1 pins 15 - 17

Speaker

CN1 pins 7 - 10

Reset switch

CN1 pins 19 & 20

Turbo LED

CN1 pins 12 & 13

External battery

J3

Note: If system has a 12-pin connector, make sure red wire is connected to pin 11.

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

JP1

Open

 

CMOS memory clear

JP1

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

None

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

None

5MB

(4) 256K x 9

(4) 1M x 9

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

32MB

(4) 4M x 9

(4) 4M x 9

CPU SPEED SELECTION

Speed

JP2

JP3

JP4

20MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

25MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 3 & 4 closed

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed