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MB-8433AEP

BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-8433AEP

Processor

80486SX/CX486M7/CX486DX/AM486DX/AM486DX PLUS/UMC U5/80486DX/ CX486DX2/AM486DX2/AM486DX2 PLUS/80486DX2/AM486DX4/80486DX4/ SL Pentium Overdrive/Cyrix M1

Processor Speed

25/33/40/66(internal)/75(internal)/80(internal)/100(internal)/120(internal)MHz

Chip Set

AMD

Max. Onboard DRAM

64MB

Cache

128/256/512KB

BIOS

AMI

Dimensions

220mm x 210mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

J4

Turbo LED

J12 (pins 10 & 11)

IDE interface (primary)

J5

Reset switch

J12 (pins 12 & 13)

Serial port 2

J6

Green PC connector

J12 (pins 17 - 19)

IDE interface (secondary)

J8

IDE interface LED

J12 (pins 20 - 22)

Serial port 1

J9

Turbo switch

J12 (pins 23 & 24)

Parallel port

J10

Chassis fan power

JP2

External battery

J11

32-bit PCI slots

PCI1 - PCI3

Speaker

J12 (pins 1 - 4)

PS/2 mouse port

S1

Power LED & keylock

J12 (pins 5 - 9)

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

CMOS memory normal operation

J11

pins 2 & 3 closed

 

CMOS memory clear

J11

pins 3 & 4 closed

Ľ

Factory configured - do not alter

J13

N/A

 

Flash BIOS voltage select 5v

JP22

pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP22

pins 1 & 2 closed

 

Flash BIOS EPROM

JP22

Open

Ľ

Internal battery enabled

JP25

Closed

 

Internal battery disabled

JP25

Open

Ľ

Power good signal detect from power supply

JP26

pins 1 & 2 closed

 

Power good signal detect from board

JP26

pins 2 & 3 closed

Ľ

Factory configured - do not alter

U2

N/A

Ľ

Factory configured - do not alter

U3

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

2MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

2MB

NONE

NONE

(1) 1M x 36

(1) 1M x 36

2MB

(1) 2M x 36

NONE

NONE

NONE

4MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

4MB

NONE

NONE

(1) 2M x 36

(1) 2M x 36

4MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

4MB

(1) 4M x 36

NONE

NONE

NONE

6MB

(1) 2M x 36

(1) 4M x 36

NONE

NONE

6MB

NONE

NONE

(1) 2M x 36

(1) 4M x 36

8MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

8MB

NONE

NONE

(1) 4M x 36

(1) 4M x 36

8MB

(1) 8M x 36

NONE

NONE

NONE

10MB

(1) 2M x 36

(1) 8M x 36

NONE

NONE

10MB

NONE

NONE

(1) 2M x 36

(1) 8M x 36

12MB

(1) 4M x 36

(1) 8M x 36

NONE

NONE

12MB

NONE

NONE

(1) 4M x 36

(1) 8M x 36

16MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

16MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

16MB

NONE

NONE

(1) 8M x 36

(1) 8M x 36

16MB

(1) 16M x 36

NONE

NONE

NONE

18MB

(1) 2M x 36

(1) 16M x 36

NONE

NONE

18MB

NONE

NONE

(1) 2M x 36

(1) 16M x 36

20MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

20MB

NONE

NONE

(1) 4M x 36

(1) 16M x 36

24MB

(1) 8M x 36

(1) 16M x 36

NONE

NONE

24MB

NONE

NONE

(1) 8M x 36

(1) 16M x 36

32MB

(1) 32M x 36

NONE

NONE

NONE

33MB

(1) 1M x 36

(1) 32M x 36

NONE

NONE

33MB

NONE

NONE

(1) 1M x 36

(1) 32M x 36

34MB

(1) 2M x 36

(1) 32M x 36

NONE

NONE

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

34MB

NONE

NONE

(1) 2M x 36

(1) 32M x 36

36MB

(1) 4M x 36

(1) 32M x 36

NONE

NONE

36MB

NONE

NONE

(1) 4M x 36

(1) 32M x 36

40MB

(1) 8M x 36

(1) 32M x 36

NONE

NONE

40MB

NONE

NONE

(1) 8M x 36

(1) 32M x 36

48MB

(1) 16M x 36

(1) 32M x 36

NONE

NONE

48MB

NONE

NONE

(1) 16M x 36

(1) 32M x 36

64MB

(1) 32M x 36

(1) 32M x 36

NONE

NONE

64MB

NONE

NONE

(1) 32M x 36

(1) 32M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

128KB

(4) 32K x 8

(1) 8K x 8

256KB (A)

(4) 64K x 8

(1) 16K x 8

256KB (B)

(4) 64K x 8

(1) 32K x 8

512KB

(4) 64K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP20

JP21

128KB

pins 1 & 2 closed

Open

256KB (A)

Open

pins 1 & 2 closed

256KB (B)

pins 1 & 2 closed

pins 2 & 3 closed

512KB

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP5

JP6

JP7

JP8

80486SX

5 & 6

Open

2 & 3, 4 & 5

Open

CX486DX

1 & 2, 4 & 5

Open

1 & 2, 4 & 5

1 & 2

AM486DX

1 & 2, 4 & 5

Open

2 & 3, 4 & 5

Open

AM486DX PLUS WB

1 & 2, 4 & 5

Open

1 & 2

Open

AM486DX PLUS WT

1 & 2, 4 & 5

5 & 6

1 & 2, 4 & 5

Open

U5

Open

Open

4 & 5

Open

80486DX

1 & 2, 4 & 5

Open

2 & 3, 4 & 5

Open

CX486DX2

1 & 2, 4 & 5

1 & 2

1 & 2, 4 & 5

1 & 2, 3 & 4

AM486DX2

1 & 2, 4 & 5

4 & 5

2 & 3, 4 & 5

Open

AM486DX2 PLUS WB

1 & 2, 4 & 5

3 & 4

1 & 2

Open

AM486DX2 PLUS WT

1 & 2, 4 & 5

3 & 4, 5 & 6

1 & 2, 4 & 5

Open

80486DX2

1 & 2, 4 & 5

4 & 5

2 & 3, 4 & 5

Open

CX486DX4

1 & 2, 4 & 5

Open

1 & 2, 4 & 5

1 & 2

AM486DX4

1 & 2, 4 & 5

Open

2 & 3, 4 & 5

Open

AM486DX4 PLUS WB

1 & 2, 4 & 5

Open

1 & 2

Open

AM486DX2 PLUS WT

1 & 2, 4 & 5

5 & 6

1 & 2, 4 & 5

Open

80486DX4

1 & 2, 4 & 5

Open

1 & 2, 4 & 5

Open

CPU TYPE CONFIGURATION (CONíT)

Type

JP5

JP6

JP7

JP8

P24D

1 & 2, 4 & 5

Open

1 & 2

Open

M1

1 & 2, 4 & 5

Open

1 & 2, 4 & 5

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

RN6

RN7

RN8

RN9

80486SX

Not installed

Installed

Not installed

Installed

CX486DX

Not installed

Not installed

Installed

Not installed

AM486DX

Not installed

Installed

Not installed

Installed

AM486DX PLUS WB

Not installed

Installed

Not installed

Installed

AM486DX PLUS WT

Not installed

Installed

Not installed

1 - 4 installed only

U5

Installed

Not installed

Not installed

Not installed

80486DX

Not installed

Installed

Not installed

Installed

CX486DX2

Not installed

Not installed

Installed

Not installed

AM486DX2

Not installed

Installed

Not installed

Installed

AM486DX2 PLUS WB

Not installed

Installed

Not installed

Installed

AM486DX2 PLUS WT

Not installed

Installed

Not installed

1 - 4 installed only

80486DX2

Not installed

Installed

Not installed

Installed

CX486DX4

Not installed

Not installed

Installed

Not installed

AM486DX4

Not installed

Installed

Not installed

Installed

AM486DX4 PLUS WB

Not installed

Installed

Not installed

Installed

AM486DX4 PLUS WT

Not installed

Installed

Not installed

1 - 4 installed only

80486DX4

Not installed

Installed

Not installed

Installed

P24D

Not installed

Installed

Not installed

Installed

M1

Not installed

Installed

Not installed

1 - 4 installed only

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP11

JP16

JP18

JP19

25MHz

pins 1 & 2 closed

Open

Open

Open

33MHz

pins 1 & 2 closed

Open

Closed

Closed

40MHz

pins 2 & 3 closed

Closed

Open

Closed

66iMHz

pins 1 & 2 closed

Open

Closed

Closed

75iMHz

pins 1 & 2 closed

Open

Open

Open

80iMHz

pins 2 & 3 closed

Closed

Open

Closed

100iMHz

pins 1 & 2 closed

Open

Closed

Closed

120iMHz

pins 2 & 3 closed

Closed

Open

Closed

CPU VOLTAGE CONFIGURATION

Voltage

JP1

JP3

JP4

3.45v

pins 2 & 3 closed

Open

Open

4v

pins 1 & 2 closed

Open

Open

5v

pins 2 & 3 closed

Closed

Closed

DMA CONFIGURATION

DMA

JP9

JP10

DMA 1

pins 1 & 2 closed

pins 2 & 3 closed

DMA 3

pins 2 & 3 closed

pins 1 & 2 closed