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MB-4864

CSS LABORATORIES, INC.

MB-4864

Processor

80486SX/SL80486SX/UMCU5/80486DX/SL80486DX/CXM7/ AM486DX2/AM486DX2+/80486DX2/SL80486DX2/SL80486DX4/ AM486DX5/P24D/CX M1SC/P24T

Processor Speed

25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)/133(internal)MHz

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

J4

Turbo LED

JP31

IDE interface 1

J5

Speaker

JP32

Floppy drive interface

J6

Power LED & keylock

JP33

IDE interface 2

J7

Front panel connector

JP36

Serial port 2

J8

Reset switch

JP38/pins 1 & 2

Serial port 1

J9

Turbo LED

JP38/pins 3 & 4

External battery

JP1

Auxiliary keyboard connector

JX1

IDE interface LED 2

JP27

PS/2 mouse interface

JX2

IDE interface LED 1

JP28

32-bit PCI slots

PC1 – PC3

Turbo switch

JP30

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter (flash BIOS)

JP14

Unidentified

»

Factory configured - do not alter

JP23

Unidentified

 

Internal RTC enabled

JP24

Open

 

Internal RTC disabled

JP24

Closed

 

Internal keyboard enabled

JP26

Open

 

Internal keyboard disabled

JP26

Closed

»

Factory configured - do not alter

JP29

Unidentified

»

Factory configured - do not alter (IDE master)

JP35

Unidentified

»

Factory configured - do not alter

JP37

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

(1) 1M x 36

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

8MB

(1) 2M x 36

None

None

10MB

(1) 1M x 36

(1) 1M x 36

(1) 512K x 36

10MB

(1) 2M x 36

(1) 512K x 36

None

12MB

(1) 2M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

14MB

(1) 2M x 36

(1) 1M x 36

(1) 512K x 36

16MB

(1) 4M x 36

None

None

16MB

(1) 2M x 36

(1) 2M x 36

None

20MB

(1) 4M x 36

(1) 1M x 36

None

20MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

22MB

(1) 4M x 36

(1) 1M x 36

(1) 512K x 36

24MB

(1) 4M x 36

(1) 2M x 36

None

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

26MB

(1) 4M x 36

(1) 2M x 36

(1) 512K x 36

28MB

(1) 4M x 36

(1) 2M x 36

(1) 1M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

32MB

(1) 8M x 36

None

None

32MB

(1) 4M x 36

(1) 4M x 36

None

34MB

(1) 8M x 36

(1) 512K x 36

None

34MB

(1) 4M x 36

(1) 4M x 36

(1) 512K x 36

36MB

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

38MB

(1) 8M x 36

(1) 512K x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

None

40MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

42MB

(1) 8M x 36

(1) 2M x 36

(1) 512K x 36

44MB

(1) 8M x 36

(1) 2M x 36

(1) 1M x 36

48MB

(1) 8M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

50MB

(1) 8M x 36

(1) 4M x 36

(1) 512K x 36

52MB

(1) 8M x 36

(1) 4M x 36

(1) 1M x 36

56MB

(1) 8M x 36

(1) 4M x 36

(1) 2M x 36

64MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

None

None

64MB

(1) 8M x 36

(1) 8M x 36

None

66MB

(1) 8M x 36

(1) 8M x 36

(1) 512K x 36

68MB

(1) 8M x 36

(1) 8M x 36

(1) 1M x 36

68MB

(1) 16M x 36

(1) 1M x 36

None

70MB

(1) 16M x 36

(1) 1M x 36

(1) 512K x 36

72MB

(1) 16M x 36

(1) 2M x 36

None

72MB

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

74MB

(1) 16M x 36

(1) 2M x 36

(1) 512K x 36

76MB

(1) 16M x 36

(1) 2M x 36

(1) 1M x 36

80MB

(1) 16M x 36

(1) 4M x 36

None

80MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

82MB

(1) 16M x 36

(1) 4M x 36

(1) 512K x 36

84MB

(1) 16M x 36

(1) 4M x 36

(1) 1M x 36

88MB

(1) 16M x 36

(1) 4M x 36

(1) 2M x 36

96MB

(1) 16M x 36

(1) 8M x 36

None

96MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

98MB

(1) 16M x 36

(1) 8M x 36

(1) 512K x 36

100MB

(1) 16M x 36

(1) 8M x 36

(1) 1M x 36

104MB

(1) 16M x 36

(1) 8M x 36

(1) 2M x 36

112MB

(1) 16M x 36

(1) 8M x 36

(1) 4M x 36

128MB

(1) 16M x 36

(1) 16M x 36

None

128MB

(1) 16M x 36

(1) 8M x 36

(1) 8M x 36

Note: Board accepts x 32 SIMMs. 512KB x 32/36 is not recommended.

CACHE CONFIGURATION

Size

Bank 0

TAG

128KB

(4) 32K x 8

(1) 8K/16K/32K x 8

256KB

(4) 64K x 8

(1) 16K/32K x 8

512KB

(4) 128K x 8

(1) 32K x 8

Note: The location of bank 0 & the TAG is unidentified.

CACHE JUMPER CONFIGURATION

Size

JP21

JP22

128KB

Open

Open

256KB

Open

Closed

512KB

Closed

Closed

CPU SPEED SELECTION

Speed

JP15

JP16

JP17

JP18

JP25

25MHz

Closed

Open

Open

1 & 2

Open

33MHz

Closed

Open

Closed

1 & 2

Open

40MHz

Open

Closed

Closed

2 & 3

Closed

50iMHz

Closed

Open

Open

1 & 2

Open

66iMHz

Closed

Open

Closed

1 & 2

Open

75iMHz

Closed

Open

Open

1 & 2

Open

80iMHz

Open

Closed

Closed

2 & 3

Closed

100iMHz

Closed

Open

Closed

1 & 2

Open

133iMHz

Closed

Open

Closed

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP5

JP6

JP7

JP8

JP9

80486SX

Open

Open

1 & 2

Open

Open

SL80486SX

Closed

Open

3 & 4

3 & 4

3 & 4

UMC U5

Open

Open

1 & 2

1 & 2

1 & 2

80486DX

Open

Open

1 & 2

Open

Open

SL80486DX

Closed

Open

3 & 4

3 & 4

3 & 4

CX M7

Closed

Open

5 & 6

5 & 6

5 & 6

AM486DX2

Open

Closed

1 & 2

Open

Open

AM486DX2-66

Open

Closed

1 & 2

Open

Open

AM486DX2-80

Open

Closed

1 & 2

Open

Open

AM486DX2-100

Open

Closed

1 & 2

Open

Open

AM486DX2+-66

Closed

Open

3 & 4

3 & 4

3 & 4

AM486DX2+-80

Closed

Open

3 & 4

3 & 4

3 & 4

AM486DX2+-100

Closed

Open

3 & 4

3 & 4

3 & 4

80486DX2

Open

Open

1 & 2

Open

Open

SL80486DX2

Closed

Open

3 & 4

3 & 4

3 & 4

SL80486DX4

Closed

Open

3 & 4

3 & 4

3 & 4

AM486DX5

Open

Open

1 & 2

Open

Open

P24D

Closed

Open

3 & 4

3 & 4

3 & 4

CX M1SC

Closed

Open

3 & 4

3 & 4

3 & 4

P24T

Closed

Open

3 & 4

3 & 4

3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP10

JP11

JP12

JP13

JP34

80486SX

Open

1 & 2

1 & 2

Open

Open

SL80486SX

Open

1 & 2

1 & 2

Open

Open

UMC U5

Open

1 & 2

1 & 2

Open

Open

80486DX

Open

1 & 2

2 & 3

2 & 3

Open

SL80486DX

Open

1 & 2

2 & 3

2 & 3

Open

CX M7

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

AM486DX2

Open

1 & 2

2 & 3

2 & 3

Open

AM486DX2-66

Open

1 & 2

2 & 3

2 & 3

Open

AM486DX2-80

Open

1 & 2

2 & 3

2 & 3

Open

AM486DX2-100

Open

1 & 2

2 & 3

2 & 3

Open

AM486DX2+-66

1 & 3, 5 & 6

2 & 3

2 & 3

2 & 3

2 & 3

AM486DX2+-80

1 & 3, 5 & 6

2 & 3

2 & 3

2 & 3

2 & 3

AM486DX2+-100

5 & 6

2 & 3

2 & 3

2 & 3

2 & 3

80486DX2

Open

1 & 2

2 & 3

2 & 3

Open

SL80486DX2

Open

1 & 2

2 & 3

2 & 3

Open

SL80486DX4

Open

1 & 2

2 & 3

2 & 3

Open

AM486DX5

Open

1 & 2

2 & 3

2 & 3

Open

P24D

5 & 6

2 & 3

2 & 3

2 & 3

2 & 3

CX M1SC

5 & 6

2 & 3

2 & 3

2 & 3

2 & 3

P24T

Open

2 & 3

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP2

JP3

JP4

3.3v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 7 & 8 closed

3.45v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 5 & 6 closed

3.6v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 3 & 4 closed

4v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

5v

Pins 1 & 2 closed

Pins 1 & 2 closed

Open

DMA CHANNEL SELECTION

Channel

JP19

JP20

»

1

Pins 2 & 3 closed

Pins 2 & 3 closed

 

3

Pins 1 & 2 closed

Pins 1 & 2 closed