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MB-1500/1575/1590PCT

BIOSTAR MICROTECH INTERNATIONAL, INC.

MB-1500/1575/1590PCT

Processor

Pentium

Processor Speed

75/90/100MHz

Chip Set

Unidentified

Max. Onboard DRAM

128MB

Cache

256/512/1024/2048KB

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 - 16)

Speaker

JP15 (pins 1 - 4)

+5v ground

JP15 (pins 17 - 18)

Power LED & keylock

JP15 (pins 5 - 9)

Chassis fan power

JP32

Turbo LED

JP15 (pins 10 - 11)

32-bit VESA local bus slots

PC1 - PC3

Reset switch

JP15 (pins 12 - 13)

32-bit PCI bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Host data wait state select 1 wait state

JP4

Open

 

Host data wait state select 0 wait states

JP4

Closed

»

Back to back I/O delay select 3 wait states

JP6

Open

 

Back to back I/O delay select 0 wait states

JP6

Closed

»

CMOS memory normal operation

JP8

pins 2 & 3 closed

 

CMOS memory clear

JP8

pins 3 & 4 closed

 

Battery type select external

JP8

Closed

»

Monitor type select color

JP14

Open

 

Monitor type select monochrome

JP14

Closed

»

Factory configured - do not alter

JP19

Open

»

Buffer type select stand alone

JP26

Open

 

Buffer type select loaded component

JP26

Closed

»

Factory configured - do not alter

JP31

Open

»

Stop clock select enabled

JP33

Open

 

Stop clock select disabled

JP33

Closed

»

Bus/core ratio select 2/3 ratio

JP34

Open

 

Bus/core ratio select 1/2 ratio

JP34

Closed

»

Factory configured - do not alter

JP35

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

NONE

4MB

(2) 512K x 36

NONE

4MB

(2) 256K x 36

(2) 256K x 36

6MB

(2) 256K x 36

(2) 512K x 36

8MB

(2) 1M x 36

NONE

8MB

(2) 512K x 36

(2) 512K x 36

10MB

(2) 256K x 36

(2) 1M x 36

12MB

(2) 512K x 36

(2) 1M x 36

16MB

(2) 2M x 36

NONE

16MB

(2) 1M x 36

(2) 1M x 36

18MB

(2) 256K x 36

(2) 2M x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 1M x 36

(2) 2M x 36

32MB

(2) 4M x 36

NONE

32MB

(2) 2M x 36

(2) 2M x 36

34MB

(2) 256K x 36

(2) 4M x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

NONE

66MB

(2) 256K x 36

(2) 8M x 36

68MB

(2) 512K x 36

(2) 8M x 36

72MB

(2) 1M x 36

(2) 8M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 8M x 36

(2) 4M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

256KB

(8) 32K x 8

NONE

(1) 8K x 8

512KB

(8) 32K x 8

(8) 32K x 8

(1) 32K x 8

512KB

(8) 64K x 8

NONE

(1) 32K x 8

1MB

(8) 64K x 8

(8) 64K x 8

(1) 32K x 8

1MB

(8) 128K x 8

NONE

(1) 32K x 8

2MB

(8) 128K x 8

(8) 128K x 8

(1) 64K x 8

CACHE JUMPER CONFIGURATION

Size

JP20

JP21

JP22

JP23

JP28

JP29

JP30

256KB

Open

Open

Open

Open

1 & 2

Open

1 & 2

512KB

Open

Open

Closed

Open

2 & 3

Open

2 & 3

512KB

Open

Open

Closed

Open

1 & 2

2 & 3

1 & 2

1MB

Open

Closed

Closed

Open

2 & 3

1 & 2

2 & 3

1MB

Open

Closed

Closed

2 & 3

1 & 2

2 & 3

1 & 2

2MB

Closed

Closed

Closed

1 & 2

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CACHE VOLTAGE CONFIGURATION

Voltage

JP17

JP18

3v

pins 3 & 5, 4 & 6 closed

pins 3 & 5, 4 & 6 closed

5v

pins 1 & 3, 2 & 4 closed

pins 1 & 3, 2 & 4 closed

Note: JP17 = Bank 0 and JP18 = Bank 1.

CPU SPEED CONFIGURATION

Speed

JP11

JP12

JP13

75MHz

Closed

Open

Open

90MHz

Open

Closed

Open

100MHz

Closed

Open

Closed

VESA WAIT STATE CONFIGURATION

Wait states

JP5

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

JP3

CPU clock/2

Open

= 50MHz

Closed

AT CLOCK CONFIGURATION

Clock

JP7

JP9

LCLK/3

Open

Closed

LCLK/4

Closed

Open

PCI IRQ CONFIGURATION

IRQ

JP37

JP38

IRQ14

pins 2 & 3 closed

pins 1 & 2 closed

IRQ15

pins 1 & 2 closed

pins 2 & 3 closed

DRIVE ENABLE CONFIGURATION

Speed

JP25

JP27

50MHz

Open

Open

60MHz

Closed

Closed

66MHz

Closed

Closed

FLASH MEMORY CONFIGURATION

Setting

JP24

EPROM

Open

5v flash

pins 2 & 3 closed

12v flash

pins 1 & 2 closed