...because we can't all be on the bleeding edge...





4MHL3S

EFA CORPORATION

4MHL3S

Processor

CX486SX/80486SX/CX486DX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

UMC

Max. Onboard DRAM

64MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP21

Reset switch

JP26

Power LED & keylock

JP22

Green PC connector

JP28

Speaker

JP23

32-bit VESA Local bus slot

S1

Turbo LED

JP24

32-bit VESA Local bus slot

S2

Turbo switch

JP25

32-bit VESA Local bus slot

S3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

External battery enabled

JP1

Open

 

Internal battery enabled

JP1

Closed

 

CPU CX486SX & CX487SX enabled

JP6

pins 1 & 2 closed

 

CPU CX486SX & CX487SX disabled

JP6

Open

Trident 9000 video card not installed

JP8

pins 1 & 2 closed

 

Trident 9000 video card installed

JP8

pins 2 & 3 closed

External green card enabled

JP10

pins 2 & 3 closed

 

External green card disabled

JP10

pins 1 & 2 closed

Factory configured - do not alter

JP13

pins 1 & 2 closed

 

32K x 8 TAG enabled

JP27

pins 1 & 2 closed

 

16K x 8 TAG enabled

JP27

pins 2 & 3 closed

Factory configured - do not alter

JP29

pins 2 & 3 closed

Factory configured - do not alter

JP30

pins 2 & 3 closed

Factory configured - do not alter

JP31

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

2MB

(4) 256K x 9

(1) 256K x 36

NONE

2MB

(4) 256K x 9

NONE

(1) 256K x 36

2MB

NONE

(1) 256K x 36

(1) 256K x 36

2MB

NONE

(1) 512K x 36

NONE

2MB

NONE

NONE

(1) 512K x 36

3MB

(4) 256K x 9

(1) 256K x 36

(1) 256K x 36

3MB

(4) 256K x 9

(1) 512K x 36

NONE

3MB

NONE

(1) 512K x 36

(1) 256K x 36

3MB

NONE

(1) 256K x 36

(1) 512K x 36

4MB

(4) 1M x 9

NONE

NONE

4MB

NONE

(1) 512K x 36

(1) 512K x 36

4MB

(4) 256K x 9

(1) 512K x 36

(1) 256K x 36

5MB

(4) 1M x 9

(1) 256K x 36

NONE

5MB

(4) 1M x 9

NONE

(1) 256K x 36

5MB

NONE

(1) 1M x 36

(1) 256K x 36

5MB

NONE

(1) 256K x 36

(1) 1M x 36

5MB

(4) 256K x 9

(1) 1M x 36

NONE

5MB

(4) 256K x 9

NONE

(1) 1M x 36

6MB

(4) 1M x 9

(1) 256K x 36

(1) 256K x 36

6MB

(4) 256K x 9

(1) 1M x 36

(1) 256K x 36

6MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

6MB

NONE

(1) 1M x 36

(1) 512K x 36

6MB

NONE

(1) 512K x 36

(1) 1M x 36

7MB

(4) 1M x 9

(1) 512K x 36

(1) 256K x 36

8MB

(4) 1M x 9

(1) 1M x 36

NONE

8MB

(4) 1M x 9

NONE

(1) 1M x 36

8MB

NONE

(1) 1M x 36

(1) 1M x 36

DRAM CONFIGURATION (CONT.)

Size

Bank 0

Bank 1

Bank 2

9MB

(4) 1M x 9

(1) 1M x 36

(1) 256K x 36

9MB

(4) 1M x 9

(1) 256K x 36

(1) 1M x 36

9MB

(4) 256K x 9

(1) 1M x 36

(1) 1M x 36

10MB

NONE

(1) 2M x 36

(1) 512K x 36

10MB

(4) 1M x 9

(1) 512K x 36

(1) 1M x 36

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

12MB

(4) 1M x 9

(1) 2M x 36

NONE

12MB

NONE

(1) 2M x 36

(1) 1M x 36

12MB

NONE

(1) 1M x 36

(1) 2M x 36

13MB

(4) 256K x 9

(1) 2M x 36

(1) 1M x 36

13MB

(4) 1M x 9

(1) 2M x 36

(1) 256K x 36

16MB

(4) 4M x 9

NONE

NONE

16MB

(4) 1M x 9

(1) 2M x 36

(1) 1M x 36

16MB

NONE

(1) 2M x 36

(1) 2M x 36

17MB

(4) 4M x 9

(1) 256K x 36

NONE

17MB

(4) 4M x 9

NONE

(1) 256K x 36

17MB

(4) 256K x 9

(1) 4M x 36

NONE

17MB

(4) 256K x 9

NONE

(1) 4M x 36

18MB

(4) 4M x 9

(1) 256K x 36

(1) 256K x 36

18MB

(4) 256K x 9

(1) 4M x 36

(1) 256K x 36

18MB

(4) 256K x 9

(1) 256K x 36

(1) 4M x 36

19MB

(4) 4M x 9

(1) 512K x 36

(1) 256K x 36

20MB

(4) 4M x 9

(1) 1M x 36

NONE

20MB

(4) 4M x 9

NONE

(1) 1M x 36

20MB

(4) 1M x 9

(1) 4M x 36

NONE

20MB

(4) 1M x 9

NONE

(1) 4M x 36

21MB

(4) 256K x 9

(1) 4M x 36

(1) 1M x 36

21MB

(4) 256K x 9

(1) 1M x 36

(1) 4M x 36

21MB

(4) 1M x 9

(1) 4M x 36

(1) 256K x 36

21MB

(4) 1M x 9

(1) 256K x 36

(1) 4M x 36

21MB

(4) 4M x 9

(1) 1M x 36

(1) 256K x 36

21MB

(4) 4M x 9

(1) 256K x 36

(1) 1M x 36

22MB

(4) 4M x 9

(1) 512K x 36

(1) 1M x 36

24MB

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

24MB

(4) 1M x 9

(1) 4M x 36

(1) 1M x 36

24MB

(4) 1M x 9

(1) 1M x 36

(1) 4M x 36

24MB

NONE

(1) 4M x 36

(1) 2M x 36

24MB

NONE

(1) 2M x 36

(1) 4M x 36

25MB

(4) 256K x 9

(1) 2M x 36

(1) 4M x 36

25MB

(4) 4M x 9

(1) 2M x 36

(1) 256K x 36

28MB

(4) 4M x 9

(1) 2M x 36

(1) 1M x 36

28MB

(4) 1M x 9

(1) 2M x 36

(1) 4M x 36

32MB

(4) 4M x 9

(1) 4M x 36

NONE

32MB

(4) 4M x 9

NONE

(1) 4M x 36

32MB

NONE

(1) 4M x 36

(1) 4M x 36

DRAM CONFIGURATION (CONT.)

Size

Bank 0

Bank 1

Bank 2

33MB

(4) 256K x 9

(1) 4M x 36

(1) 4M x 36

33MB

(4) 4M x 9

(1) 256K x 36

(1) 4M x 36

33MB

(4) 4M x 9

(1) 4M x 36

(1) 256K x 36

34MB

(4) 4M x 9

(1) 512K x 36

(1) 4M x 36

36MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

36MB

(4) 4M x 9

(1) 1M x 36

(1) 4M x 36

36MB

(4) 4M x 9

(1) 4M x 36

(1) 1M x 36

40MB

(4) 4M x 9

(1) 2M x 36

(1) 4M x 36

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

64MB

(4) 16M x 9

NONE

NONE

CLOCK GENERATOR CONFIGURATION

Clock Type

JP32

JP33

MX8310

pins 1 & 2 closed

Open

MX8315

Open

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) 16K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP15

JP16

JP17

JP19

JP20

32KB

pins 2 & 3

Open

Open

Open

Open

64KB

pins 1 & 2

Open

Open

Closed

Open

128KB

pins 2 & 3

pins 2 & 3

Closed

Closed

Open

256KB

pins 1 & 2

pins 1 & 2

Closed

Closed

Closed

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP9

JP11

80486SX

Open

pins 2 & 3 closed

ODP486SX

pins 2 & 3 closed

pins 1 & 2, and 3 & 4 closed

CX486SX/CX487SX

pins 1 & 2 closed

pins 1 & 2, and 3 & 4 closed

80486DX2

pins 1 & 2 closed

pins 1 & 2, and 3 & 4 closed

80486DX2 Overdrive

pins 2 & 3 closed

pins 1 & 2, and 3 & 4 closed

CPU SPEED CONFIGURATION

Speed

JP2

JP3

JP4

JP7

20MHz

Open

Open

Open

pins 1 & 2 closed

25MHz

Closed

Open

Open

pins 1 & 2 closed

33MHz

Closed

Closed

Closed

pins 1 & 2 closed

40MHz

Closed

Closed

Open

pins 2 & 3 closed

50i MHz

Closed

Open

Open

pins 1 & 2 closed

50MHz

Open

Open

Closed

pins 2 & 3 closed

66i MHz

Closed

Closed

Closed

pins 1 & 2 closed

NPU TYPE CONFIGURATION

Type

JP12

JP14

Intel CPU or CX486SX

pins 2 & 3 closed

Open

CX486SX & CX487SX

pins 1 & 2 closed

pins 2 & 3 closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU speed

Wait states

JP18

£ 33MHz

0 wait states

Open

> 33MHz

1 wait state

Closed