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





MB-1425/1433/1440/1450UHT VER. 3 & ABOVE

BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-1425/1433/1440/1450UHT VER. 3 & ABOVE

Processor

CX486M6/80486SX/CX486M7/UMC486/80486DX/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

128/256/512/1024KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2), 32-bit PCI slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP8

Turbo switch

JP15 (pins 14 - 15)

Speaker

JP15 (pins 1 - 4)

+5v ground

JP15 (pins 17 - 18)

Power LED & keylock

JP15 (pins 5 - 9)

32-bit PCI slots

PC1 - PC3

Turbo LED

JP15 (pins 10 - 11)

32-bit VESA local bus slots

SL1 & SL2

Reset switch

JP15 (pins 12 - 13)

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

JP8

Open

 

CMOS memory clear

JP8

pins 3 & 4 closed

 

Battery type select external

JP8

Closed

»

Power good signal detect from power supply

JP10

pins 1 & 2 closed

 

Power good signal detect from board

JP10

pins 2 & 3 closed

»

Password select normal

JP16

Open

 

Password select clear

JP16

Closed

»

Factory configured - do not alter

JP23

Open

»

Factory configured - do not alter

JP24

Open

»

Factory configured - do not alter

JP25

Open

»

Factory configured - do not alter

JP30

Open

»

Factory configured - do not alter

JP31

Open

»

Factory configured - do not alter

JP32

Open

»

Hardware management select normal operation

JP40

Open

 

Hardware management select trigger for SMM mode

JP40

Closed

»

Cyrix CPU clock speed select 2x

JP43

Open

 

Cyrix CPU clock speed select 1x

JP43

Closed

»

CPU type select all

JP60

Open

 

CPU type select AMD 80486DX2-66/80 only

JP60

Closed

Note: The location of JP60 is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

2MB

(4) 512K x 9

NONE

NONE

2MB

NONE

(1) 512K x 36

NONE

2MB

NONE

NONE

(1) 512K x 36

4MB

(4) 1M x 9

NONE

NONE

4MB

NONE

(1) 512K x 36

(1) 512K x 36

4MB

NONE

(1) 1M x 36

NONE

4MB

NONE

NONE

NONE

6MB

(4) 1M x 9

(1) 512 x 36

NONE

6MB

(4) 1M x 9

NONE

(1) 512 x 36

8MB

(4) 1M x 9

(1) 512K x 36

(1) 512K 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

8MB

NONE

(1) 2M x 36

NONE

8MB

NONE

NONE

(1) 2M x 36

16MB

(4) 4M x 9

NONE

NONE

16MB

NONE

(1) 2M x 36

(1) 2M x 36

16MB

NONE

(1) 4M x 36

NONE

16MB

NONE

NONE

(1) 4M x 36

24MB

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

24MB

(4) 4M x 9

(1) 2M x 36

NONE

24MB

(4) 4M x 9

NONE

(1) 2M x 36

32MB

(4) 4M x 9

(1) 2M x 36

(1) 2M x 36

32MB

(4) 4M x 9

(1) 4M x 36

NONE

32MB

(4) 4M x 9

NONE

(1) 4M x 36

32MB

(4) 8M x 9

NONE

NONE

32MB

NONE

(1) 4M x 36

(1) 4M x 36

32MB

NONE

(1) 8M x 36

NONE

32MB

NONE

NONE

(1) 8M x 36

64MB

(4) 16M x 9

NONE

NONE

64MB

NONE

(1) 8M x 36

(1) 8M x 36

128MB

(4) 16M x 9

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 64K x 8

CACHE JUMPER CONFIGURATION

Size

JP22

JP34

JP35

JP36

128KB

1 & 2

Open

1 & 2

2 & 3

256KB

1 & 2, 3 & 4

Open

2 & 3

1 & 2

512KB

1 & 2, 3 & 4, 5 & 6

3 & 4

2 & 3

1 & 2

1MB

1 & 2, 3 & 4, 5 & 6, 7 & 8

1 & 2, 3 & 4

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP19

JP20

AMD

pins 2 & 3 closed

pins 1 & 2 closed

Cyrix

pins 1 & 2 closed

pins 2 & 3 closed

Intel

pins 1 & 2 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP37

JP38

JP39

JP41

JP42

CX486M6

1 & 2, 3 & 4

1 & 2, 3 & 4

3 & 4

2 & 3

2 & 3

AM486

Open

2 & 3

1 & 2

1 & 2

Open

80486SX

Open

2 & 3

1 & 2

Open

Open

CX486M7

1 & 2, 3 & 4

1 & 2, 3 & 4

3 & 4

2 & 3

2 & 3

UMC486

Open

2 & 3

1 & 2

1 & 2

Open

SL80486

1 & 2, 3 & 4

1 & 2, 3 & 4

3 & 4

2 & 3

2 & 3

80486DX

Open

1 & 2, 3 & 4

1 & 2

2 & 3

Open

80486DX2

Open

1 & 2, 3 & 4

1 & 2

2 & 3

Open

80486DX4

2 & 3, 4 & 5

1 & 2, 3 & 4

3 & 4

2 & 3

1 & 2, 3 & 4

Pentium Overdrive

2 & 3, 4 & 5

1 & 2, 3 & 4

3 & 4, 5 & 6

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP44

JP45

JP46

JP47

CX486M6

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

AM486

Open

pins 2 & 3 closed

pins 3 & 4 closed

Open

80486SX

Open

Open

Open

Open

CX486M7

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

UMC486

Open

pins 2 & 3 closed

pins 3 & 4 closed

Open

SL80486

Open

pins 1 & 2 closed

Open

Open

80486DX

Open

Open

Open

Open

80486DX2

Open

Open

Open

Open

80486DX4

pins 3 & 4 closed

pins 1 & 2 closed

Open

Open

Pentium Overdrive

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP33

25MHz

pins 1 & 2 closed

33MHz

pins 1 & 2, 3 & 4, 5 & 6 closed

40MHz

pins 1 & 2, 3 & 4 closed

50iMHz

pins 1 & 2 closed

50MHz

pins 5 & 6 closed

66iMHz

pins 1 & 2, 3 & 4, 5 & 6 closed

75iMHz

pins 1 & 2 closed

100iMHz

pins 1 & 2, 3 & 4, 5 & 6 closed

CPU CLOCK CONFIGURATION

Speed

JP48

2x

pins 2 & 3 closed

2.5x

pins 1 & 2 closed

3x

Open

CPU VOLTAGE CONFIGURATION

Voltage

JP29

JP49

JP50

JP51

JP52

3.3v

Open

Open

Open

Closed

Closed

5v

pins 1 & 2, 3 & 4 closed

Closed

Closed

Open

Open

VESA WAIT STATE CONFIGURATION

Wait states

JP53

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

JP54

<= 33MHz

Open

> 33MHz

Closed