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MB-4D50AV

UNIDENTIFIED

MB-4D50AV

Processor

CXM6/SL80486SX/80486SX/CXM7/AM486DXLV-S/SL80486DX/80486DX/ 80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

ALI

Max. Onboard DRAM

128MB

Cache

128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

Green PC connector

JP9

Turbo LED

J2

Green PC connector (monitor)

JP10

External battery

J3

Green PC connector-(external input)

JP32

Turbo switch

J4

Green PC connector-(ring input)

JP33

Power LED & keylock

J5

32-bit VESA local bus slots

SL1 - SL3

Speaker

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

Battery type select internal

J3

Open

 

Battery type select external

J3

Closed

 

CMOS memory clear

J3

pins 2 & 3 closed

Ľ

Real time clock enabled

JP12

pins 1 & 2 closed

 

Real time clock disabled

JP12

pins 2 & 3 closed

Ľ

Monitor type select color

JP13

Closed

 

Monitor type select monochrome

JP13

Open

Ľ

CPU type select P24T/CXM6/CXM7 2x

JP20

Closed

 

CPU type select CXM6/CXM7 1x

JP20

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

NONE

NONE

NONE

(1) 256K x 36

2MB

NONE

NONE

(1) 256K x 36

(1) 256K x 36

2MB

NONE

NONE

NONE

(1) 512K x 36

3MB

NONE

(1) 256K x 36

NONE

(1) 512K x 36

3MB

NONE

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

NONE

NONE

NONE

(1) 1M x 36

4MB

NONE

(1) 512K x 36

NONE

(1) 512K x 36

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

NONE

NONE

(1) 256K x 36

(1) 1M x 36

5MB

NONE

NONE

(1) 1M x 36

(1) 256K x 36

6MB

NONE

(1) 1M x 36

NONE

(1) 512K x 36

6MB

NONE

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

6MB

NONE

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

6MB

NONE

(1) 256K x 36

(1) 1M x 36

(1) 256K x 36

8MB

NONE

NONE

(1) 1M x 36

(1) 1M x 36

8MB

NONE

NONE

NONE

(1) 2M x 36

9MB

NONE

(1) 256K x 36

NONE

(1) 2M x 36

9MB

NONE

(1) 1M x 36

(1) 256K x 36

(1) 1M x 36

9MB

NONE

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

9MB

NONE

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

10MB

NONE

(1) 512K x 36

NONE

(1) 2M x 36

10MB

NONE

(1) 2M x 36

NONE

(1) 512K x 36

12MB

NONE

(1) 1M x 36

NONE

(1) 2M x 36

12MB

NONE

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

16MB

NONE

NONE

NONE

(1) 4M x 36

16MB

NONE

(1) 2M x 36

NONE

(1) 2M x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

17MB

NONE

NONE

(1) 256K x 36

(1) 4M x 36

17MB

NONE

NONE

(1) 4M x 36

(1) 256K x 36

18MB

NONE

(1) 4M x 36

NONE

(1) 512K x 36

18MB

NONE

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

18MB

NONE

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

18MB

NONE

(1) 256K x 36

(1) 4M x 36

(1) 256K x 36

20MB

NONE

NONE

(1) 1M x 36

(1) 4M x 36

20MB

NONE

NONE

(1) 4M x 36

(1) 1M x 36

21MB

NONE

(1) 1M x 36

(1) 256K x 36

(1) 4M x 36

21MB

NONE

(1) 4M x 36

(1) 256K x 36

(1) 1M x 36

21MB

NONE

(1) 256K x 36

(1) 1M x 36

(1) 4M x 36

21MB

NONE

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

21MB

NONE

(1) 256K x 36

(1) 4M x 36

(1) 1M x 36

21MB

NONE

(1) 1M x 36

(1) 4M x 36

(1) 256K x 36

24MB

NONE

(1) 4M x 36

NONE

(1) 2M x 36

24MB

NONE

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

24MB

NONE

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

24MB

NONE

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

25MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

28MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

NONE

NONE

(1) 4M x 36

(1) 4M x 36

32MB

NONE

NONE

NONE

(1) 8M x 36

33MB

NONE

(1) 256K x 36

NONE

(1) 8M x 36

33MB

NONE

(1) 4M x 36

(1) 256K x 36

(1) 4M x 36

33MB

NONE

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

33MB

NONE

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

34MB

NONE

(1) 512K x 36

NONE

(1) 8M x 36

34MB

NONE

(1) 8M x 36

NONE

(1) 512K x 36

36MB

NONE

(1) 1M x 36

NONE

(1) 8M x 36

36MB

NONE

(1) 4M x 36

(1) 1M x 36

(1) 4M x 36

36MB

NONE

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

36MB

NONE

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

36MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

40MB

NONE

(1) 2M x 36

NONE

(1) 8M x 36

40MB

NONE

(1) 8M x 36

NONE

(1) 2M x 36

48MB

NONE

(1) 4M x 36

NONE

(1) 8M x 36

48MB

NONE

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

49MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

NONE

NONE

NONE

(1) 16M x 36

64MB

NONE

(1) 8M x 36

NONE

(1) 8M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

65MB

NONE

NONE

(1) 256K x 36

(1) 16M x 36

65MB

NONE

NONE

(1) 16M x 36

(1) 256K x 36

66MB

NONE

(1) 16M x 36

NONE

(1) 512K x 36

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

66MB

NONE

(1) 256K x 36

(1) 256K x 36

(1) 16M x 36

66MB

NONE

(1) 16M x 36

(1) 256K x 36

(1) 256K x 36

66MB

NONE

(1) 256K x 36

(1) 16M x 36

(1) 256K x 36

68MB

NONE

NONE

(1) 1M x 36

(1) 16M x 36

68MB

NONE

NONE

(1) 16M x 36

(1) 1M x 36

69MB

NONE

(1) 1M x 36

(1) 256K x 36

(1) 16M x 36

69MB

NONE

(1) 16M x 36

(1) 256K x 36

(1) 1M x 36

69MB

NONE

(1) 256K x 36

(1) 1M x 36

(1) 16M x 36

69MB

NONE

(1) 16M x 36

(1) 1M x 36

(1) 256K x 36

69MB

NONE

(1) 256K x 36

(1) 16M x 36

(1) 1M x 36

69MB

NONE

(1) 1M x 36

(1) 16M x 36

(1) 256K x 36

72MB

NONE

(1) 16M x 36

NONE

(1) 2M x 36

72MB

NONE

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

72MB

NONE

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

76MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

80MB

NONE

NONE

(1) 4M x 36

(1) 16M x 36

80MB

NONE

(1) 1M x 36

(1) 16M x 36

(1) 1M x 36

81MB

NONE

(1) 16M x 36

(1) 256K x 36

(1) 4M x 36

81MB

NONE

(1) 256K x 36

(1) 4M x 36

(1) 16M x 36

81MB

NONE

(1) 256K x 36

(1) 16M x 36

(1) 4M x 36

81MB

NONE

(1) 4M x 36

(1) 16M x 36

(1) 256K x 36

84MB

NONE

(1) 4M x 36

(1) 1M x 36

(1) 16M x 36

84MB

NONE

(1) 16M x 36

(1) 1M x 36

(1) 4M x 36

84MB

NONE

(1) 1M x 36

(1) 4M x 36

(1) 16M x 36

84MB

NONE

(1) 16M x 36

(1) 4M x 36

(1) 1M x 36

84MB

NONE

(1) 1M x 36

(1) 16M x 36

(1) 4M x 36

84MB

NONE

(1) 4M x 36

(1) 16M x 36

(1) 1M x 36

88MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

96MB

NONE

(1) 16M x 36

NONE

(1) 8M x 36

96MB

NONE

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

96MB

NONE

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

96MB

NONE

(1) 4M x 36

(1) 16M x 36

(1) 4M x 36

97MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

100MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

112MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

112MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

112MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

128MB

NONE

NONE

(1) 16M x 36

(1) 16M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8 or (1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP3

JP4

128KB

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP8

JP16

JP17

JP18

JP19

CX M6

5 & 6

Open

Open

Closed

Open

SL80486SX

1 & 2

Closed

Closed

Open

Closed

80486SX

Open

Closed

Closed

Open

Open

CX M7

5 & 6

Closed

Open

Closed

Open

AM486DXLV-S

3 & 4

Closed

Closed

Open

Open

SL80486DX

1 & 2

Closed

Closed

Open

Closed

80486DX

Open

Closed

Closed

Open

Open

80486DX2

Open

Closed

Closed

Open

Open

Pentium Overdrive

1 & 2

Closed

Closed

Open

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JP21

JP22

JP23

JP24

JP25

CX M6

1 & 2

Open

2 & 3

1 & 2

1 & 2

SL80486SX

1 & 2

Open

1 & 2

2 & 3

1 & 2

80486SX

1 & 2

Open

2 & 3

Open

1 & 2

CX M7

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

AM486DXLV-S

2 & 3

2 & 3

2 & 3

Open

1 & 2

SL80486DX

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

80486DX

2 & 3

2 & 3

2 & 3

Open

1 & 2

80486DX2

2 & 3

2 & 3

2 & 3

Open

1 & 2

Pentium Overdrive

2 & 3

1 & 2

1 & 2

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JP27

JP28

JP29

JP30

JP31

CX M6

Closed

Open

Closed

4 & 5

4 & 5

SL80486SX

Open

Open

Open

1 & 2

1 & 2

80486SX

Open

Open

Closed

Open

Open

CX M7

Closed

Open

Closed

4 & 5

4 & 5

AM486DXLV-S

Open

Open

Open

2 & 3

2 & 3

SL80486DX

Open

Open

Open

1 & 2

1 & 2

80486DX

Open

Open

Closed

Open

Open

80486DX2

Open

Open

Closed

Open

Open

Pentium Overdrive

Open

Closed

Open

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP40

80486

pins 1 & 2 closed, pins 3 & 4 open

Note: The location of JP40 is unidentified.

CPU SPEED CONFIGURATION

Speed

JP7

JP26

JP35

JP36

25MHz

pins 1 & 2, 5 & 6 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

33MHz

pins 3 & 4, 5 & 6 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

40MHz

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

50iMHz

pins 1 & 2, 5 & 6 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

50MHz

pins 1 & 2, 5 & 6 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

66iMHz

pins 3 & 4, 5 & 6 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

VESA WAIT STATE CONFIGURATION

Wait states

JP40

0 wait states

pins 5 & 6 open

1 wait state

pins 5 & 6 closed

Note: The location of JP40 is unidentified.

BUS SPEED CONFIGURATION

CPU speed

JP40

<= 33MHz

pins 7 & 8 open

> 33MHz

pins 7 & 8 closed

Note: The location of JP40 is unidentified.