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BRAVO 286/386SX SYSTEM BOARD (202382-001, 002, 005)

AST RESEARCH, INC.

BRAVO 286/386SX SYSTEM BOARD (202382-001, 002, 005)

Processor

80386SX

Processor Speed

20MHz

Chip Set

AST

Max. Onboard DRAM

16MB

Cache

None

BIOS

AST

Dimensions

355mm x 251mm

I/O Options

16-bit external CPU/NPU card slot, bus mouse port, floppy interface, IDE interface, parallel port, serial ports (2), VGA port

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Bus mouse port

J12

Floppy drive interface

J24

Parallel port

J13

External battery

J26

Primary serial port

J14

Speaker

J27

VGA port

J18

Fan connector

J28

VGA pass-thru

J19

Front panel switch/display

J29

Secondary serial port header

J20

16-bit external CPU/NPU card

J34

IDE interface

J22

Drive active LED connector

J35

USER CONFIGURABLE SETTINGS

Function

Switch

Position

VGA interface enabled

SW1/1

On

 

VGA interface disabled

SW1/1

Off

Password check normal operation

SW1/2

Off

 

Password clear

SW1/2

On

Factory configured - do not alter

SW1/3

Off

Factory configured - do not alter

SW1/4

Off

Factory configured - do not alter

SW1/5

On

Factory configured - do not alter

SW1/6

On

PS/2 mode enabled (AT mode disabled)

SW1/7

On

 

PS/2 mode disabled (AT mode enabled)

SW1/7

Off

Monitor type select fixed frequency

SW1/8

Off

 

Monitor type select multi-frequency

SW1/8

On

Factory configured - do not alter

SW1/9

Off

Factory configured - do not alter

SW1/10

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(2) 256K x 9

(2) 256K x 9

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

4MB

(2) 1M x 9

(2) 1M x 9

NONE

4.5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

NONE

9MB

(2) 256K x 9

(2) 256K x 9

(2) 4M x 9

12MB

(2) 1M x 9

(2) 1M x 9

(2) 4M x 9

16MB

(2) 4M x 9

(2) 4M x 9

NONE