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ALL-IN-ONE 386SX

UNIDENTIFIED

ALL-IN-ONE 386SX

Processor

80386SX (exact location unknown)

Processor Speed

16/20/25MHz

Chip Set

Intel

Max. Onboard DRAM

32MB

Cache

None

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)

NPU Options

80387SX (exact location unknown)

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

JP5 pins 1 - 2

Parallel port

JP9

Turbo switch

JP5 pins 4 - 5

External battery

JP10

Turbo LED

JP5 pins 8 - 9

PS/2 mouse port

JP11

Speaker

JP5 pins 11 - 14

IDE interface LED

JP12

Power LED & keylock

JP5 pins 16 - 20

IDE interface

JP15

Serial port 1

JP7

Floppy drive interface

JP18

Serial port 2

JP8

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Battery type select internal

JP10

Closed

 

Battery type select external

JP10

pins 2 & 3 closed

 

CMOS memory clear

JP10

pins 3 & 4 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(2) 256K x 9

NONE

NONE

NONE

1MB

(2) 256K x 9

(2) 256K x 9

NONE

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

NONE

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

NONE

4.5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

NONE

5MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

(2) 1M x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NONE

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

NONE

NONE

9MB

(2) 256K x 9

(2) 256K x 9

(2) 4M x 9

NONE

10MB

(2) 1M x 9

(2) 4M x 9

NONE

NONE

12MB

(2) 1M x 9

(2) 1M x 9

(2) 4M x 9

NONE

16MB

(2) 4M x 9

(2) 4M x 9

NONE

NONE

16.5MB

(2) 4M x 9

(2) 4M x 9

(2) 256K x 9

NONE

17MB

(2) 256K x 9

(2) 256K x 9

(2) 4M x 9

(2) 4M x 9

18MB

(2) 4M x 9

(2) 4M x 9

(2) 1M x 9

NONE

20MB

(2) 1M x 9

(2) 1M x 9

(2) 4M x 9

(2) 4M x 9

24MB

(2) 4M x 9

(2) 4M x 9

(2) 4M x 9

NONE

32MB

(2) 4M x 9

(2) 4M x 9

(2) 4M x 9

(2) 4M x 9

IDE CONFIGURATION

Setting

JP19

JP20

IDE interface disabled

Open

Open

IDE interface enabled

Closed

Closed

FLOPPY CONFIGURATION

Setting

JP21

JP22

Floppy interface disabled

Open

pins 2 & 3 closed

Floppy interface enabled

Closed

pins 1 & 2 closed