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ALI 386SX MAINBOARD

UNIDENTIFIED

ALI 386SX MAINBOARD

Processor

80386SX/CX486SLC

Processor Speed

16/20/25/33MHz

Chip Set

None

Max. Onboard DRAM

16MB

SRAM Cache

None

BIOS

AMI

Dimensions

216mm x 170mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Turbo switch & LED

J8

Reset switch

J6

Power LED & keylock

J9

Speaker

J7

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

ADS signal delay disabled

J5

pins 2 & 3 closed

 

ADS signal delay enabled

J5

pins 1 & 2 closed

NPU mode select synchronous with CPU

JP2

pins 1 & 2 closed

 

NPU mode select asynchronous

JP2

pins 2 & 3 closed

RTC type select 146816

JP3

open

 

RTC type select DS1287

JP3

closed

Monitor type select monochrome

JP4

open

 

Monitor type select color

JP4

closed

Parity check enabled

JP6

open

 

Parity check disabled

JP6

closed

BUS CLOCK CONFIGURATION

CPU Speed

JP1

JP5

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

25MHz

pins 1 & 2 closed

pins 1 & 2 closed

20MHz

pins 2 & 3 closed

pins 1 & 2 closed

16MHz

pins 1 & 2 closed

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