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MB-8500SAC

BIOSTAR MICROTECH INTERNATIONAL CORPORATION

MB-8500SAC

Processor

CX M1/AM K5/Pentium

Processor Speed

75/90/100/120/133/150/166/180MHz

Chip Set

Unidentified

Video Chip Set

SIS

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512/1024KB

BIOS

Award

Dimensions

280mm x 220mm

I/O Options

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

NPU Options

None

CONNECTIONS

Function

Label

Function

Label

PS/2 mouse port

J6

Audio connector

J20

VGA IDC connector

J7

Chassis fan power

JP12

VGA D type connector

J8

Speaker

JP14 pins 1 - 4

Feature connector

J10

Power LED & keylock

JP14 pins 5 - 9

Serial port 2

J11

Turbo LED

JP14 pins 10 & 11

Floppy drive interface

J12

Reset switch

JP14 pins 12 & 13

Serial port 1

J13

Green PC connector

JP14 pins 17 & 18

Parallel port

J14

IDE interface LED

JP14 pins 20 & 21

IDE interface 1

J15

VCC ground connector

JP14 pins 25 & 26

IDE interface 2

J16

32-bit PCI slots

PC1 - PC3

External battery

J18

   

Note: J6, J7 and J8 are optional. Only one will be installed where J6 is shown.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

 

Jumper information unavailable

J2

N/A

 

Jumper information unavailable

JP4

Unidentified

»

CMOS memory normal operation

J18

Open

 

CMOS memory clear

J18

Pins 3 & 4 closed

 

Battery type select external

J18

Closed

»

Jumper information unavailable

J19

Unidentified

»

Factory configured - do not alter

JP2

Unidentified

»

Battery type select internal

JP9

Closed

 

Battery type select external

JP9

Open

 

Flash BIOS voltage select 12v

JP10

Pins 1 & 2 closed

 

Flash BIOS voltage select 5v

JP10

Pins 2 & 3 closed

 

Flash BIOS EPROM or 0v flash

JP10

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

None

None

None

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 2M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

16MB

(1) 4M x 36

None

None

None

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 4M x 36

(1) 1M x 36

None

None

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

20MB

(1) 1M x 36

(1) 4M x 36

None

None

24MB

(1) 4M x 36

(1) 2M x 36

None

None

24MB

(1) 2M x 36

(1) 4M x 36

None

None

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

None

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(1) 8M x 36

(1) 1M x 36

None

None

36MB

(1) 1M x 36

(1) 8M x 36

None

None

40MB

(1) 8M x 36

(1) 2M x 36

None

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

40MB

(1) 2M x 36

(1) 8M x 36

None

None

44MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 8M x 36

(1) 4M x 36

None

None

48MB

(1) 4M x 36

(1) 8M x 36

None

None

100MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

104MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

112MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: Board accepts EDO memory.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

256KB (A)

None

(2) 32K x 32

None

256KB (B)

(8) 32K x 8

None

(1) 8K x 8

512KB

(8) 64K x 8

None

(1) 32K x 8

1MB

(8) 128K x 8

None

(1) 32K x 8

Note: Board will either have asynchronous or synchronous pipeline burst cache installed.

CACHE JUMPER CONFIGURATION

Size

JP6

256KB (B)

Open

512KB

Pins 1 & 2 closed

1MB

Pins 1 & 2, 3 & 4 closed

CPU TYPE SELECTION

Type

JP15

JP16

P54C/CQS/CT

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

P55C/CT

Open

Pins 2 & 3 closed

CPU TYPE SELECTION

Type

JP15

JP16

P54C/CQS/CT

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

P55C/CT

Open

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP7

JP8

JP11

75MHz

Open

Closed

Open

90MHz

Closed

Open

Open

100MHz

Open

Open

Open

120MHz

Closed

Open

Pins 1 & 2 closed

133MHz

Open

Open

Pins 1 & 2 closed

150MHz

Closed

Open

Pins 1 & 2, 3 & 4 closed

166MHz

Open

Open

Pins 1 & 2, 3 & 4 closed

180MHz

Closed

Open

Pins 3 & 4 closed

CPU VOLTAGE SELECTION

Voltage

JP13

3.4v (VRE CPU)

Pins 1 & 2 closed

3.5v (VR CPU)

Pins 2 & 3 closed

CPU VOLTAGE SELECTION

Voltage

JP16

3.3v (P55C/CT)

Pins 2 & 3 closed

5v (P54C/CQS/CT)

Pins 1 & 2 closed

MISCELLANEOUS TECHNICAL NOTE

Depending on board version, a VGA D type port or a serial port could be installed where J6 is shown.