MANUAIS DE MOTHERBOARDS BIOTEQ

MB-8500TVD

JUMPER SETTING

A jumper is several pins which may or may not be covered by a plastic
jumper cap. A jumper is used to select different system options.

A: JP5 cache RAM size selection

jumper no.

256KB

512KB

JP5

open

closed

cache RAM combination

SRAM
size
locate

cache RAM

tag RAM

cacheable
main
memory(MB)

(U9,U10)

U8

256KB

(32K x 32) x 2pcs

(8K x 8)/(32Kx8) x 1pc

64

512KB

(64K x 32) x 2pcs

(32K x 8) x 1pc

64

B: JP6 CMOS function selection

OPEN: to mantain set up data in CMOS for normal functioning (default)
CLOSED: to clear CMOS setup memory, if there has been any inappropriate
incurring the system faillure.

Note: Please follow the procedure as below to clear BIOS password if your
password is lost or forgotten.

power off -> JP6 closed -> power on for several seconds -> power off -> JP6open -> power on -> reset your desired password

C: JP15 R.T.C. battery selection.

CLOSED: onboard battery enabled (default)
OPEN: onboard battery disabled

CPU INSTALLATION/JUMPER SETTING

A: JP10, JP11, JP12,JP13 CPU type selection

CPU type

JP10

JP11

JP12

JP13

remark

VI/O

Vcore

single voltage
INTEL tm
P54C/CQS /CT
CYRIX 6x86 tm
AMD K5
K5 PR xxx AB
K5 PR xxx AC
K5 PR xxx AF

open

1-3
2-4
closed

open

1-2
closed

3.5V

3.5V

open

1-3
2-4
closed

closed

1-2
closed

3.45V

3.45V

dual voltage
INTEL tm
P55C/CT
CYRIX 6x86L tm
AMD K5
PR xxx AH
PR xxx AJ
PR xxx AK

open

open

open

2-3
closed

3.5V

2.8V

open

open

closed

2-3
closed

3.45V

2.8V

closed

open

open

2-3
closed

3.5V

2.6V

closed

open

closed

2-3
closed

3.5V

2.6V

B: JP2,JP3,JP4,JP7,JP8 CPU clock selection

a: INTEL CPU

CPU speed

bus clock &
multiplier

JP2

JP3

JP4

JP7

JP8

75MHz

50MHz x 1.5

closed

closed

closed

open

open

90MHz

60MHz x 1.5

open

closed

closed

open

open

100MHz

66MHz x 1.5

closed

open

closed

open

open

120MHz

60MHz x 2

open

closed

closed

open

closed

133MHz

66MHz x 2

closed

open

closed

closed

closed

150MHz

60MHz x 2.5

open

closed

closed

closed

closed

166MHz

66MHz x 2.5

closed

open

closed

closed

closed

180MHz

60MHz x 3

open

closed

closed

closed

open

200MHz

66MHz x 3

closed

open

closed

closed

open

JP2 closed & JP3 closed & JP4 closed : bus clock = 50MHz
JP2 open & JP3 closed & JP4 closed : bus clock = 60MHz
JP2 closed & JP3 open & JP4 closed : bus clock = 66MHz
JP7 open & JP8 open : multplier = 1.5
JP7 open & JP8 closed : multiplier = 2
JP7 closed & JP8 closed : multiplier = 2.5
JP7 closed & JP8 open : multiplier = 3

b: CYRIX 6x86tm CPU

CPU speed

bus clock &
multiplier

JP2

JP3

JP4

JP7

JP8

P-120+
100MHz

50MHz x 2

closed

closed

closed

open

closed

P-133+
110MHz

55MHz x 2

closed

closed

open

open

closed

P-150+
120MHz

60MHz x 2

open

closed

closed

open

closed

P-166+
133MHz

66MHz x 2

closed

open

closed

open

closed

JP2 closed & JP3 closed & JP4 closed : bus clock = 50MHz
JP2 closed & JP3 closed & JP4 open : bus clock = 55MHz
JP2 open & JP3 closed & JP4 closed : bus clock = 60MHz
JP2 closed & JP3 open & JP4 closed : bus clock = 66MHz
JP7 open & JP8 closed : multiplier = 2

c: AMD-K5 tm CPU

CPU speed

JP2

JP3

JP4

JP7

JP8

PR-75

closed

closed

closed

open

open

PR-90

open

closed

closed

open

open

PR-100

closed

open

closed

open

open

PR-120

open

closed

closed

open

open

PR-133

closed

open

closed

open

open

PR-166

closed

open

closed

closed

closed

PR-200

closed

open

closed

closed

open

JP2 closed & JP3 closed & JP4 closed : bus clock = 50MHz
JP2 closed & JP3 closed & JP4 open : bus clock = 55MHz
JP2 closed & JP3 open & JP4 closed : bus clock = 66 MHz

CONNECTORS

A: J14

pin
no.

assignment

function

pin
no.

assignment

function

1

speaker

speaker
connector

14

NC

NC

2

NC

15

NC

NC

3

ground

16

no connection

 

4

VCC

17

green control

green switch

5

power LED(+)

power LED
& keylock

18

ground

green switch

6

no connection

power LED
& keylock

19

no connection

NC

7

ground

20

HDD LED (-)

HDD LED

8

keylock

21

HDD LED(+)

HDD LED

9

ground

22

no connection

NC

10

turbo LED(-)

turbo LED

23

NC

NC

11

turbo LED(+)

reset

24

ground

NC

12

reset control

25

VCC

VCC ground

13

ground

reset

26

ground

VCC ground

B: J10

U.S.B CONNECTOR

pin no.

assignment

pin no.

assignment

B1

+5V

A5

no connection

B2

USB-II positive data

A4

ground

B3

USB-II negative data

A3

USB -I negative data

B4

ground

A2

USB-I positive data

B5

No connection

A1

+5V

C: J12

CPU COOLER POWER CONNECTOR

pin no.

assignment

2

+12V

1

ground