HwMuseum | Index

JOINDATA SYSTEMS, INC.

G386SX/20

Processor

80386SX

Processor Speed

16/20MHz

Chip Set

Intel

Max. Onboard DRAM

16MB

SRAM Cache

None

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2/pins 1 & 4

Turbo switch

J20

Internal battery

J2/pins 2 & 4

Turbo LED

J21

Power LED & keylock

J18

Reset switch

J22

Speaker

J19

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

J2

pins 3 & 4 open

 

CMOS memory clear

J2

pins 3 & 4 closed

»

Monitor type select color

JP1

closed

 

Monitor type select monochrome

JP1

open

»

NPU disabled

JP4

pins 2 & 3 closed

 

NPU enabled

JP4

pins 1 & 2 closed

Note:J2/pin 4 is also used as ground for internal and external battery.

DRAM CONFIGURATION

Size

SIMM

Location

DIP

Location

Parity

Location

512KB

(2) 256K x 9

Bank 0

NONE

NONE

NONE

NONE

1MB

(4) 256K x 9

Banks 0 & 1

NONE

NONE

NONE

NONE

1.5MB

(4) 256K x 9

Banks 0 & 1

(4) 44256

Bank 4

(2) 41256

P-4

2MB

(4) 256K x 9

Banks 0 & 1

(8) 44256

Banks 4 & 5

(4) 41256

P-4 & P-5

2MB

(2) 1M x 9

Bank 0

NONE

NONE

NONE

NONE

2.5MB

(2) 256K x 9

(2) 1M x 9

Bank 0

Bank 1

NONE

NONE

NONE

NONE

3MB

(4) 256K x 9

Banks 0 & 1

(16) 411000

Bank 2

(2) 411000

P-2

4MB

(4) 1M x 9

Banks 0 & 1

NONE

NONE

NONE

NONE

4.5MB

(4) 1M x 9

Banks 0 & 1

(4) 44256

Bank 4

(2) 41256

P-4

5MB

(4) 256K x 9

Banks 0 & 1

(32) 411000

Banks 2 & 3

(4) 411000

P-2 & P-3

6MB

(4) 1M x 9

Banks 0 & 1

(16) 411000

Bank 2

(2) 411000

P-2

8MB

(4) 1M x 9

Banks 0 & 1

(32) 411000

Banks 2 & 3

(4) 411000

P-2 & P-3

8MB

(2) 4M x 9

Bank 0

NONE

NONE

NONE

NONE

8.5MB

(2) 256K x 9

(2) 4M x 9

Bank 0

Bank 1

NONE

NONE

NONE

NONE

9MB

(2) 256K x 9

(2) 4M x 9

Bank 0

Bank 1

(4) 44256

Bank 4

(2) 41256

P-4

10MB

(2) 1M x 9

(2) 4M x 9

Bank 0

Bank 1

NONE

NONE

NONE

NONE

12MB

(2) 1M x 9

(2) 4M x 9

Bank 0

Bank 1

(16) 411000

Bank 2

(2) 411000

P-2

16MB

(4) 4M x 9

Bank 0

NONE

NONE

NONE

NONE