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





ISA486GSi MODEL IP25A

ACER, INC.

ISA486GSi MODEL IP25A

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/50(internal)/66(internal)

Chip Set

ALI

Max. Onboard DRAM

32MB

SRAM Cache

None

BIOS

Acer

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J3

Reset switch

J4/11 & 12

Power LED & keylock

J4/1 - 5

Turbo switch

J4/14 - 16

Speaker

J4/7 - 10

Turbo LED

J4/18 & 19

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP1

open

 

CMOS memory clear

JP1

closed

Battery select internal

J3

pins 2 & 3 closed

 

Battery select external

J3

connected

CPU TYPE CONFIGURATION

CPU

JP6

JP7

80486DX2

pins 2 & 3 closed

pins 2 & 3 closed

ODP486SX

open

pins 1 & 2 closed

80486DX

pins 2 & 3 closed

pins 2 & 3 closed

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

80486SX

open

pins 1 & 2 closed

CPU SPEED CONFIGURATION

CPU Speed

OSC1

JP8

JP9

JP10

JP11

20MHz

40MHz

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 2 & 3

25MHz

50MHz

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 2 & 3

33MHz

66MHz

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

50MHz

50MHz

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 2 & 3

60MHz

66MHz

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

Note:Pins designated should be in the closed position.

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) 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