Processor

80386SX/CX486SLC

Processor Speed

16/25/33MHz

Chip Set

ACER

Max. Onboard DRAM

16MB

Cache

None

BIOS

Unidentified

Dimensions

220mm x 220mm

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

Note: Relative pins of J8 are unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

ADS delay select disabled

J5

pins 2 & 3 closed

ADS delay select enabled

J5

pins 1 & 2 closed

»

NPU synchronous with CPU

JP2

pins 1 & 2 closed

NPU asynchronous with CPU

JP2

pins 2 & 3 closed

»

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

»

CMOS memory select normal

JP7

pins 2 & 3 closed

CMOS memory clear

JP7

pins 1 & 2 closed

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 CONFIGURATION

CPU Speed

JP1

JP5

» 33MHz

pins 2 & 3 closed

pins 2 & 3 closed

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