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ACE - 386SX - AR1

UNIDENTIFIED

ACE - 386SX - AR1

Processor

80386SX (exact location unknown)

Processor Speed

16/20/25/33MHz

Chip Set

Acer

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387SX (exact location unknown)

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo switch

J8 pins 1 - 3

Reset switch

J6

Turbo LED

J8 pins 4 - 5

Speaker

J7

Power LED & keylock

J9

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

ADS delay disabled

J5

pins 2 & 3 closed

 

ADS delay enabled

J5

pins 1 & 2 closed

NPU synchronous with CPU

JP2

pins 1 & 2 closed

 

NPU asynchronous with CPU

JP2

pins 2 & 3 closed

Factory configured - do not alter

JP3

N/A

Monitor type select monochrome

JP4

pins 1 & 2 closed

 

Monitor type select color

JP4

pins 2 & 3 closed

Parity check disabled

JP6

Open

 

Parity check enabled

JP6

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(1) 256K x 9

(1) 256K x 9

NONE

NONE

1MB

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

2MB

(1) 1M x 9

(1) 1M x 9

NONE

NONE

4MB

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

8MB

(1) 4M x 9

(1) 4M x 9

NONE

NONE

16MB

(1) 4M x 9

(1) 4M x 9

(1) 4M x 9

(1) 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