Processor

80386DX/CX486DLC/80486SX/80487SX/80486DX

Processor Speed

33/50(internal)/50/66(internal)MHz

Chip Set

EFAR

Max. onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA card slot (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo LED

JP36

Power LED & keylock

JP27

Turbo switch

JP39

Speaker

JP29

32-bit VESA card slot

S1

Reset switch

JP35

32-bit VESA card slot

S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

JP1

pins 2 & 3 closed

CMOS memory clear

JP1

pins 1 & 2 closed

»

CPU speed select ATCLK/2 (386 mode)

JP9

pins 1 & 2 closed

CPU speed select ATCLK/1 (386 mode)

JP9

pins 2 & 3 closed

»

Factory configured - do not alter

JP20

Open

»

Factory configured - do not alter

JP40

pins 2 & 3 closed

»

Factory configured - do not alter

JP41

pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

None

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP13

JP14

JP15

JP16

JP21

JP22

JP23

32KB

Open

Open

pins 2 & 3

Open

pins 1 & 2

pins 2 & 3

pins 2 & 3

64KB

Open

Open

pins 2 & 3

Closed

pins 1 & 2

pins 1 & 2

pins 1 & 2

128KB

Closed

Open

pins 1 & 2

Closed

pins 2 & 3

pins 1 & 2

pins 2 & 3

256KB

Closed

Closed

pins 1 & 2

Closed

pins 1 & 2

pins 1 & 2

pins 1 & 2

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

VESA CPU TYPE (ID0 & ID1) CONFIGURATION

CPU Type

JP31 (ID0)

JP32 (ID1)

80386

pins 1 & 2 closed

pins 2 & 3 closed

80486

pins 2 & 3 closed

pins 1 & 2 closed

VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION

CPU speed

Wait states

JP30 (ID3)

JP34 (ID2)

£ 33MHz

0 wait states

pins 1 & 2 closed

pins 1 & 2 closed

> 33MHz

1 wait state

pins 2 & 3 closed

pins 2 & 3 closed

VESA ID4 CONFIGURATION

Setting

JP33 (ID4)

Reserved for future use

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

80386DX

CX486DLC

80486SX

80487SX

80486DX

JP4

pins 1 & 2

N/A

N/A

N/A

pins 2 & 3

JP7

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 2 & 3

JP8

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 1 & 2

JP12

N/A

N/A

Open

pins 1 & 2

pins 2 & 3

JP17

N/A

N/A

pins 2 & 3

pins 1 & 2

pins 1 & 2

JP18

N/A

N/A

Open

Closed

Closed

JP19

Closed

Closed

Open

Open

Open

JP25

pins 1 & 2

N/A

N/A

N/A

pins 2 & 3

JP26

pins 1 & 2

N/A

N/A

N/A

pins 2 & 3

JP28

pins 1 & 2

N/A

N/A

N/A

pins 2 & 3

JP31

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 2 & 3

Note: Pins designated should be in the closed position.