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





4MHL3G

EFA CORPORATION

4MHL3G

Processor

CXM6/SL80486SX/80486SX/SL80486DX/80486DX/ODP486SX/CXM7/ SL80486DX2/80486DX2/80486DX4/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

128MB

Cache

64/128/256/512/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Turbo LED

JP52

Turbo switch

JP48

Turbo key

JP53

Reset switch

JP49

Green PC connector

JP54

Power LED & keylock

JP50

32-bit VESA local bus slots

SL1 - SL3

Speaker

JP51

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select EGA

JP2

pins 2 & 3 closed

 

Monitor type select monochrome/VGA

JP2

pins 1 & 2 closed

»

Factory configured - do not alter

JP4

Open

»

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 closed

»

Factory configured - do not alter

JP12

Open

»

Factory configured - do not alter

JP25

Open

»

DX slow down mode disabled

JP37

Open

 

DX slow down mode enabled

JP37

Closed

»

Factory configured - do not alter

JP38

Open

»

Factory configured - do not alter

JP45

Open

»

Factory configured - do not alter

JP55

Open

Note: The location of jumpers JP45 & JP55 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 256K x 36

(1) 1M x 36

NONE

NONE

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

NONE

6MB

(1) 512K x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

NONE

8MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 256K x 36

(1) 4M x 36

NONE

NONE

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

NONE

18MB

(1) 512K x 36

(1) 4M x 36

NONE

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 4M x 36

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

36MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

36MB

(1) 1M x 36

(1) 8M x 36

NONE

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

48MB

(1) 4M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

NONE

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

NONE

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

65MB

(1) 256K x 36

(1) 16M x 36

NONE

NONE

68MB

(1) 1M x 36

(1) 16M x 36

NONE

NONE

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

80MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

NONE

96MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

NONE

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

128MB

(1) 16M x 36

(1) 16M x 36

NONE

NONE

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP27

JP28

JP35

JP41

JP42

JP43

64KB

1 & 2

2 & 3

Open

2 & 3

1 & 2

1 & 2

1 & 2

128KB

2 & 3

1 & 2

1 & 2, 3 & 4

2 & 3

1 & 2

1 & 2

2 & 3

256KB

1 & 2

1 & 2

2 & 3, 4 & 5

2 & 3

1 & 2

2 & 3

2 & 3

512KB

2 & 3

1 & 2

1 & 2, 3 & 4

2 & 3

2 & 3

2 & 3

2 & 3

1MB

1 & 2

1 & 2

2 & 3, 4 & 5

1 & 2

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP7

JP11

JP16

JP17

JP18

JP19

CXM6

Open

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

SL80486SX

Closed

2 & 3

4 & 5

1 & 2

2 & 3

Open

80486SX

Open

Open

Open

Open

2 & 3

Open

ODP486SX

Open

Open

Open

Open

2 & 3

Open

SL80486DX

Closed

2 & 3

4 & 5

1 & 2

2 & 3

Open

80486DX

Open

Open

Open

Open

2 & 3

Open

CXM7

Open

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

SL80486DX2

Closed

2 & 3

4 & 5

1 & 2

2 & 3

Open

80486DX2

Open

Open

Open

Open

2 & 3

Open

80486DX4

Closed

2 & 3

4 & 5

1 & 2

2 & 3

Open

P24T

Open

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed postion.

CPU TYPE CONFIGURATION (CON’T)

Type

JP19

JP20

JP21

JP22

JP23

JP29

JP30

JP31

CXM6

2 & 3

1 & 2

2 & 3

Open

Open

2 & 3

1 & 2

2 & 3

SL80486SX

Open

Open

2 & 3

Open

Open

2 & 3

2 & 3

1 & 2

80486SX

Open

Open

2 & 3

Open

Open

2 & 3

2 & 3

1 & 2

ODP486SX

Open

Open

1 & 2

2 & 3

Closed

2 & 3

2 & 3

1 & 2

SL80486DX

Open

Open

1 & 2

1 & 2

Closed

2 & 3

2 & 3

1 & 2

80486DX

Open

Open

1 & 2

1 & 2

Closed

2 & 3

2 & 3

1 & 2

CXM7

2 & 3

1 & 2

1 & 2

1 & 2

Closed

2 & 3

1 & 2

2 & 3

SL80486DX2

Open

Open

1 & 2

1 & 2

Closed

2 & 3

2 & 3

1 & 2

80486DX2

Open

Open

1 & 2

1 & 2

Closed

2 & 3

2 & 3

1 & 2

80486DX4

Open

Open

1 & 2

1 & 2

Closed

2 & 3

2 & 3

1 & 2

P24T

1 & 2

2 & 3

1 & 2

2 & 3

Closed

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed postion. The location fof JP29 is unidentified.

CPU TYPE CONFIGURATION

Type

jp6

jp26

All CPU types

Open

pins 1 & 2 closed

80486DX4 only

pins 1 & 2 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP8

JP14

JP15

All CPU types

Open

Open

Open

P24D only

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP10

All CPU types

Open

CX486DX-40

pins 2 & 3 closed

CX486DX2-50

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP24

All CPU types

Open

CX M6/M7 CPU

Closed

CPU SPEED CONFIGURATION

Speed

JP32

JP33

JP34

20MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

25MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

33MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

40MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

50iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

50MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

66iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

75iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

100iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU VOLTAGE CONFIGURATION

Voltage

JP13

JP44

3.3v

pins 2 & 3, 5 & 6 closed

pins 1 & 2 closed

5.0v

pins 1 & 2, 4 & 5 closed

pins 2 & 3 closed

VESA WAIT STATE CONFIGURATION

Wait states

JP40

0 wait states

pins 1 & 2 closed

1 wait state

pins 2 & 3 closed

BUS SPEED CONFIGURATION

CPU speed

JP39

<= 33MHz

pins 1 & 2 closed

> 33MHz

pins 2 & 3 closed