MANUAIS DE MOTHERBOARDS BIOTEQ

MB-8500TVX

JUMPER SETTING

A jumper is serveral pins which may or may notbe covered by a plastic jumper
cap. A jumper is used to select different system options.

A: JP3 FLASH ROM TYPE VOLTAGE SELECT

1-2 closed : +5V type flasch memory used
2-3 closed : +12V type flash memory used

B: JP4 CMOS FUNCTION SELECT

Open: To maintain set up and extended setup data in CMOS for normal functioning.
(default)
Closed: To clear CMOS set up memory. If there has been any inappropriate operation
incurring the system failure.

Note: please follow the procedures below to clear BIOS password if your password is lost
or forgotten.

power off -> JP4 closed -> power on -> after memory count finished power off ->JP4 open -> power on
-> reset your desired password

C: JP7 CACHE RAM SIZE SELECT

jumper
no.

256KB

512KB

JP7

open

closed

Cache RAM combination

SRAM
size
locate

cache RAM

tag RAM

cacheable
main
memory (MB)

U18,U21

U12

256KB

(32Kx32)x2pcs

(8Kx8)(32Kx8)x1pcs

64

512KB

(64Kx32)x2pcs

(32Kx8)x1pcs

64

 

CPU INSTALLATION/JUMPER SETTING

(A) JP6,J11 CPU TYPE SELECT

 

CPU

JP6

JP11

remark

single voltage

INTEL
P54C/CQS/CT
CYRIX 6x86 tm
AMD K5

1-2 closed

closed

VI/O & Vcore
=3.45V/3.5V

dual voltage

INTEL
P55C/CT/MMX
CYRIX 6x86L/MX
AMD K6

2-3 closed

open

VI/O=3.45V/3.4V
Vcore=2.6V/2.9V

(B) JP12 (1) core voltage & I/O voltage level select for single voltage CPU
(2) I/O voltage level select for dual voltage CPU

Open : 3.5V (for VRE SPEC.)
Closed : 3.45V (for standard and VR SPEC)

*INTEL CPU standard spec: 3.135V - 3.365V
VR spec: 3.300V - 3.465
VRE spec : 3.450V - 3.600V
*CYRIX 6x86 tm spec : 3.150V - 3.600V
*AMDK5 tm spec : 3.300V - 3600V

(C) JP14 core voltage level select for dual CPU

Open : 2.9V
Closed : 2.6V

(D) JP5,JP8JP9 CPU clock select

a: INTEL CPU

CPU
speed

bus clock
& multiplier

JP5
(1-2)

JP5
(3-4)

JP8

JP9

100MHz

66MHz x 1.5

open

closed

open

open

120MHz

60MHz x 2

closed

open

open

closed

133MHz

66MHz x 2

open

closed

open

closed

150MHz

60MHz x 2.5

closed

open

closed

closed

166MHz

66MHz x 2.5

open

closed

closed

closed

180MHz

60MHz x 3

closed

open

closed

open

200MHz

66MHz x 3

open

closed

closed

open

INTEL P55C/MMX CPU

CPU
speed

bus clock
&multiplier

JP5
(1-2)

JP5
(3-4)

JP8

JP9

200MHz

66MHz x 3

open

closed

closed

open

233MHz

66MHz x 3.5

open

closed

open

open

* JP5 (1-2) closed & (3-4) open : bus clock = 60MHz
* JP5 (1-2) open & (3-4) closed : bus clock = 66MHz
* JP8 open & JP9 open : multiplier = 1.5 or 3.5
* JP8 open & JP9 closed : multiplier = 2
* JP8 closed & JP9 closed : multiplier = 2.5
* JP8 closed & JP9 open : multiplier = 3

b: CYRIX 6x86 tm /6X86L tm CPU

CPU
& speed

JP5
(1-2)

JP5
(3-4)

JP8

JP9

P-120+
100MHz

50MHz x 2

closed

open

note*

P-133+
110MHz

55MHz x 2

open

open

note*

P-150+
120MHz

60MHz x 2

closed

open

note*

P-166+
133MHz

66MHz x 2

open

open

note*

* JP5 (1-2) closed & (3-4) closed : bus clock =50MHz
* JP5(1-2) open & (3-4) open : bus clock = 55MHz
* JP5(1-2) closed & (3-4) open : bus clock = 60MHz
* JP5(1-2) open & (3-4) closed : bus clock =66MHz
**JP8 open & JP9 open : multiplier = 2 for P.C.B. version
is "MB-8500TVX-A ver. 2.2" and previous.
**JP8 open & JP9 closed : multiplier = 2 for P.C.B. version
is "MB-8500TVX-A ver.2.3" and afterwards.

c: AMD-K5 tm CPU

CPU
& speed

JP5
(1-2)

JP5
(3-4)

JP8

JP9

PR-75

closed

closed

open

open

PR-90

closed

open

open

open

PR-100

open

closed

open

open

PR-120

closed

open

open

open

PR-133

open

closed

open

open

PR-166

open

closed

closed

closed

* JP5 (1-2) closed & (3-4) closed : bus clock = 50MHz
* JP5 (1-2) closed & (3-4) open : bus clock = 60MHz
* JP5 (1-2) open & (3-40 closed : bus clock = 66MHz

d: AMD-K6 tm CPU

CPU
& speed

JP5
(1-2)

JP5
(3-4)

JP8

JP9

PR2-166

open

closed

closed

closed

PR2-200

open

closed

closed

open

* JP5 (1-2) open & (3-4) closed : bus clock = 66MHz

CONNECTORS

J13

pin
no

assignment

function

pin
no

assignment

function

1

speaker

speaker
connector

14

no connection

no connection

2

no connection

15

no connection

no connection

3

ground

16

no connection

no connection

4

VCC

17

green control

green switch

5

power LED (+)

power LED
& keylock

18

ground

green switch

6

no connection

,,, ,,, ,,,

19

no connection

no connection

7

ground

,,, ,,, ,,,

20

HDD LED (-)

HDD LED

8

key lock

,,, ,,, ,,,

21

HDD LED (+)

HDD LED

9

ground

,,, ,,, ,,,

22

no connection

no connection

10

turbo LED (-)

,,, ,,, ,,,

23

no connection

no connection

11

turbo LED (+)

turbo LED

24

ground

no connection

12

reset control

reset

25

VCC

VCC
ground

13

ground

26

ground

JP13 FAN power connector
pin 2 : GND
pin 1 : +12V

JP14 IR module connector
pin 1 : IRTX
pin 2 : GND
pin 3 : IRRX
pin 4 : NC
pin 5 : VCC

J5 PS/2 mouse cable connector
pin 1 : MS_ DATA
pin 2 : NC
pin 3 : GND
pin 4 : VCC
pin 5: MS_ CLK

J3 USB cable connector
pin A1,B1 : VCC
pin A2 : port0 DATA-
pin A3 : port0 DATA +
pin A4, B4 : GND
pin B2 : port 1 DATA-
pin B3 : port 1 DATA+